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Alternate cryptocurrencies => Service Discussion (Altcoins) => Topic started by: Mttewndew on October 09, 2019, 01:33:18 PM



Title: Too many exchange apps
Post by: Mttewndew on October 09, 2019, 01:33:18 PM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.


Title: Re: Too many exchange apps
Post by: hamdi on October 09, 2019, 01:35:42 PM
i use all exchanges only in browser.

i do not understand the hype to have a dedicated "app" for each trivial service, which i can visit as a website.


Title: Re: Too many exchange apps
Post by: OasisDre on October 09, 2019, 01:37:37 PM
Almost all available crypto exchange have app versions, even new exchanges are joining as well, i use mostly exchange apps like kucoin,bitmart, binance, etc but the experience is just as the web versions, no difference at all to me except the view mode only


Title: Re: Too many exchange apps
Post by: Metall303 on October 09, 2019, 01:39:30 PM
I use the only Binance, and all other exchanges I use only in web versions. I generally think that using exchanges via phone is not very safe


Title: Re: Too many exchange apps
Post by: pooh95 on October 09, 2019, 01:47:04 PM
I use the only Binance, and all other exchanges I use only in web versions. I generally think that using exchanges via phone is not very safe
I agree, maybe the exchange version in applications is completely new, it’s also not very convenient for me to work with the application, so I also work from the browser


Title: Re: Too many exchange apps
Post by: magneto on October 09, 2019, 01:47:09 PM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.


I'd have to give the in app experience to coinbase on this one. They have the most mature app out of all of them, with the most user friendly (or at least aesthetically pleasing) GUI in my opinion.

However, that in no way means that their service is any good. If you just look around the forum briefly you'll find a ton of complaints in regards to coinbase, especially in terms of their customer support which has been historically been unresponsive. Despite Brian Armstrong's promises, this has never really been fixed since coinbase's inception. Their fees are also high due to them accepting CC for purchasing BTC. So I strongly do not recommend you use Coinbase, no matter how good their UI looks, until their fix their fundamental problems.

I think that your best pick is Binance. Like hamdi said I don't see a reason in using an app exclusively for an exchange, you're already going to be limited from the get-go on functionality. As to your KYC problems, why not just submit KYC through the web page and sign into the app once you're verified?


Title: Re: Too many exchange apps
Post by: Lance203sin on October 09, 2019, 01:51:37 PM
Binance app is enough for me. Especially after new apppstore listing


Title: Re: Too many exchange apps
Post by: adzino on October 09, 2019, 01:58:20 PM
i use all exchanges only in browser.

i do not understand the hype to have a dedicated "app" for each trivial service, which i can visit as a website.
So they can use it on the go? Most exchanges are designed for desktop view and it becomes a bit messy when using from a phone. So they make a dedicated mobile application so users can easily access the exchange while they are travelling or is away from their computer. Most of these applications also have some sort of push up notification system if there is a significant change in price of a coin (at least coinbase has the function).
Hope you understand now. Just use a little bit of your brain.  ;)


Title: Re: Too many exchange apps
Post by: omone1 on October 09, 2019, 02:07:32 PM
I prefer using browser for all my exchanges, instead of the app because of putting my phone RAM under pressure. I will download few exchange apps when I get an android phone.


Title: Re: Too many exchange apps
Post by: DaMut on October 09, 2019, 02:16:13 PM
I do not use the exchange apps, the biggest reason is because it is very easy to use the exchange on a desktop other than using apps.
another reason is that I can execute many orders when I am using a desktop while I am barely able to execute one order when I am using apps.
also with desktop, we are able to monitor a few projects at the same time while with apps we are not able to.
apps is good for those who do not want to spend all of their time using the computer or do not have the time to operate the desktop.


Title: Re: Too many exchange apps
Post by: Mttewndew on October 09, 2019, 03:22:39 PM
Binance app is enough for me. Especially after new apppstore listing
Did they manage with the problem of never-coming authorization code?


Title: Re: Too many exchange apps
Post by: diazepam666 on October 09, 2019, 06:14:19 PM
In the above Binance and Coinbase have their official android and iOS applications as like that most of the exchanges created their application already and it is in the market.
We need some different initiative from the exchange to make the betterment in usage.


Title: Re: Too many exchange apps
Post by: Inkdatar on October 09, 2019, 10:53:55 PM
I tried to use binance apps for checking prices but when to do trading I am at ease using a laptop. Sometimes the problem is the authorization login process in this apps it does not go and failed, you have to do it again just to access. I did not use other apps in the above mentioned because using the browser is fine and easy to navigate for me.


Title: Re: Too many exchange apps
Post by: sunsilk on October 09, 2019, 11:15:31 PM
I don't usually use these exchange apps, I like going to their main website and trade there on my own. I find it that there were times that apps causes bugs when I was using them that's why I've never used them again.

- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though
They have an active account here that has negative reputation, you should check it.

Username: Changelly (https://bitcointalk.org/index.php?action=profile;u=823207)


Title: Re: Too many exchange apps
Post by: skarais on October 10, 2019, 07:48:58 AM
Now it is true that there are quite a number of exchange applications available, either for iOS or Android. I prefer to trade through a website because in my opinion there is something wider than the application. Even so, I have never tried trading through an application. Because all this time their website made me quite comfortable.


Title: Re: Too many exchange apps
Post by: NeuroticFish on October 10, 2019, 09:34:38 AM
I use Bitstamp's app. It doesn't even have all the options you have on the web page (eg you cannot withdraw), but it's handy.
It moves fast, I don't have to copy-paste from phone to phone the 2FA (which is a super silly thing to do imho), and it comes handy if there's a sudden spike or drop and want to benefit and I'm not at home.

There are not too many apps. Nobody forces you use them if you don't want to.


Title: Re: Too many exchange apps
Post by: traderethereum on October 10, 2019, 10:20:01 AM
I don't use the exchange apps, I prefer to use a browser.
There are many apps in the Playstore but you can only choose the right apps to trade.
I never think about the fees because as long as my profit is bigger than the fees, I can withdraw the money.
So why you feel confused to choose the apps?
I think you can search for what you want.
Maybe you can try to download and install TabTrader from Playstore because I already used it for more than a year and I don't have a problem to trade with those apps.


Title: Re: Too many exchange apps
Post by: Anonylz on October 10, 2019, 11:09:57 AM
To be honest i don't think there is anything wrong with having exchange apps, i personally see it as a way of convenient an easy access to your favorite exchange, not every time you are in front of your computer, there are times you want to qyuickly access your exchange through mobile if you are not close to your pc, this exchange apps comes very handy, to me much better than visiting exchange through mobile browser, i will rather use the app it is more easier and user.


Title: Re: Too many exchange apps
Post by: Ridwan Fauzi on October 10, 2019, 11:32:27 AM
I've been using binance app thus far and yeah it is really easy to use and seems like the security system is safe enough. Exchange app is very useful for those people who make daily trade because they can open it as they want anytime.

I just wanna give a suggestion to choose reputable exchange if you need it. Since there is several news that appears where some exchanges application just end up in scam, especially new exchange who haven't been known by most people, be carefull on it.


Title: Re: Too many exchange apps
Post by: Mttewndew on October 10, 2019, 01:38:49 PM
I don't usually use these exchange apps, I like going to their main website and trade there on my own. I find it that there were times that apps causes bugs when I was using them that's why I've never used them again.

- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though
They have an active account here that has negative reputation, you should check it.

Username: Changelly (https://bitcointalk.org/index.php?action=profile;u=823207)

Yeah, I saw it, tried to sort it out even, but it still looks unclear - especially the part with investigations and confusing them to changenow. I mean I've used the web version of their service from time to time since 2017 (more or less), and there was never a problem.
Basically, that's the main reason I included them on the list.


Title: Re: Too many exchange apps
Post by: Kupid002 on October 10, 2019, 01:41:06 PM
I use binance app once for easy trading experience and that app is very helpful for me for  making more easier for me to trade since i will not need to log in many times and confirm it always with my email verification .

Other app i use is my local crypto exchange wallet for simple reason i can easily convert my Bitcoin or other crypto to my local currency in just one click. Then widraw my money in any option i want.


Title: Re: Too many exchange apps
Post by: Mttewndew on October 10, 2019, 01:45:41 PM
I prefer using browser for all my exchanges, instead of the app because of putting my phone RAM under pressure. I will download few exchange apps when I get an android phone.
I've heard many reasons from people who prefer not to use mobile exchanges, but yours uncommon. BTW, which apps will you choose?


Title: Re: Too many exchange apps
Post by: bittraffic on October 10, 2019, 01:49:53 PM
I also have installed a lot including binance and bitfinex, using phones in trading is just easier than going to our desktop or laptop which takes time while phones are just a push button away and I can already see the market and what is going on. What I hate about using them though is that I get to go over and over to the google authenticator  everytime I login.


Title: Re: Too many exchange apps
Post by: sunsilk on October 10, 2019, 03:27:58 PM
~snip~

Yeah, I saw it, tried to sort it out even, but it still looks unclear - especially the part with investigations and confusing them to changenow. I mean I've used the web version of their service from time to time since 2017 (more or less), and there was never a problem.
Basically, that's the main reason I included them on the list.
The details is on the link given so it's up to you to link the developers of both exchanges. If you have no issues with them but as you've said on the original post you've made, there's not enough reviews.

The trust feedback given to them can be your reference as review and it's up to you if you will continue using them. Base on the trust given, it's likely that they can do it again with any of their future customers.


Title: Re: Too many exchange apps
Post by: Mttewndew on October 10, 2019, 03:54:20 PM
~snip~

Yeah, I saw it, tried to sort it out even, but it still looks unclear - especially the part with investigations and confusing them to changenow. I mean I've used the web version of their service from time to time since 2017 (more or less), and there was never a problem.
Basically, that's the main reason I included them on the list.
The details is on the link given so it's up to you to link the developers of both exchanges. If you have no issues with them but as you've said on the original post you've made, there's not enough reviews.

The trust feedback given to them can be your reference as review and it's up to you if you will continue using them. Base on the trust given, it's likely that they can do it again with any of their future customers.
In the original post, I meant reviews about the app, but I appreciate the feedback you've given.
Speaking of trust feedback... Don't know, in a case when I have an opportunity to compare personal experience and half-anonymous reviews I prefer to trust my own experience.
But anyways - thanks a lot!
_____
Still collecting comments about other mobile apps.


Title: Re: Too many exchange apps
Post by: dunfida on October 11, 2019, 04:03:31 PM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.

So far i havent tried up any apps on any platforms on where i do used since im on my pc most of the time also i do much prefer on browser mode
than on any apps but i can say that having their own apps which is solely for mobiles is a good option than accessing their platforms with a generic
or chrome browser.User experience can really be differentiated.Dont think too much if there are lots of them yet its just a norm for these sites or platforms having their own apps.


Title: Re: Too many exchange apps
Post by: carriebee on October 11, 2019, 10:33:25 PM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.

It's trend right now the exchange apps because they know that this is the easy way to store our assets. But be careful to every we use app and make sure that app is really recommended. Be vigilant as of now that hackers is every where because even the trusted exchange can hack. As of now I use two exchange app Binance and coinbase and for me it's alright to use it.


Title: Re: Too many exchange apps
Post by: 3DBrushes on October 13, 2019, 05:27:55 AM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.

To be honest, I've not recieved any trade notifications from binance at all. Notifications are always enabled in my phone. Though I regularly recieve their promotions notifications which I don't like at all.
Changely app might be new but their website is way older than binance itself.
Huobi and kucoin apps are good too. No delay in notifications.


Title: Re: Too many exchange apps
Post by: shoreno on October 13, 2019, 02:06:30 PM
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc......
To be honest, I've not recieved any trade notifications from binance at all. Notifications are always enabled in my phone. Though I regularly recieve their promotions notifications which I don't like at all.
Changely app might be new but their website is way older than binance itself.
Huobi and kucoin apps are good too. No delay in notifications.

that sucks if you dont recieve a notification on your prioritize app/platform  . recieving unwanted promotion do also suck but you can always unsubscribe by toggling the unsubscribe button on the buttom of the mail  .

about changely, i dont think this exchange is safe but yes this was older than binance  . houbi and kucoin are indeed good but i prefer kuckoin the most among all of the exhange that are explained above  . there are many exchange app right now but who says that you are going to use all of them ?


Title: Re: Too many exchange apps
Post by: virasog on October 13, 2019, 02:11:23 PM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.


It depends if your primary job is trading and you do not want to miss out on any trade when you are away from your desktop, then you will surely make use of these phones app. But in other situations I do not think it is wise to use app on the phone. I prefer to trade on my laptop and do not install the exchange app on my phone. The only one app which is available on my phone is the coinmarketcap app, which mainly I use to see the prices of the coins.


Title: Re: Too many exchange apps
Post by: djselery on October 13, 2019, 03:39:19 PM
I don't use any exchange app, I am using only web browsers to access crypto exchanges. I feel that these apps aren't really secured, and the possibility of getting hacked is a lot higher when you use them, even if they are official apps. In addition, I have a computer and connection at home, so I don't need to use my phone necessarly in order to trade my coins.


Title: Re: Too many exchange apps
Post by: liuqi on October 13, 2019, 06:29:56 PM
I don't use any exchange app, I am using only web browsers to access crypto exchanges. I feel that these apps aren't really secured, and the possibility of getting hacked is a lot higher when you use them, even if they are official apps. In addition, I have a computer and connection at home, so I don't need to use my phone necessarly in order to trade my coins.

I also prefer to use website instead of their Android or iOS application!

Even if you see the bitrex, they don't have their application on any platform I believe it will reduce the the any type of malicious attack on your exchange wallet.
So when the any project says they have application don't believe it. Wait for their input to make it bigger and explosive.


Title: Re: Too many exchange apps
Post by: Zich on October 15, 2019, 12:37:56 PM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.


I use the Android App of Binance, Kucoin, & Huobi Global.
I don't activate the notification, so i can not comment on this part. But as for KYC on Binance app, it's work just fine.
Kucoin app & Huobi app also work just fine, didn't encounter such error that some user being complaining on telegram group.


Title: Re: Too many exchange apps
Post by: mdzahed134 on October 15, 2019, 01:58:40 PM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.

Coinbase is my favourite and i am using it from the last a few years. It’s really very transparency and you can see this is the most using apps almost 5 millions times downloaded in google playstore even huge good positive feedback. Yeah, fee is more increasing it’s very sad. Binance apps is also got huge popularity within last two years. It’s working very smoothly and definitely you can pass KYC from this apps. Really first time i heard about Changelly android apps it’s new so i don’t know about it.               


Title: Re: Too many exchange apps
Post by: 3DBrushes on October 15, 2019, 06:25:40 PM
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc......
To be honest, I've not recieved any trade notifications from binance at all. Notifications are always enabled in my phone. Though I regularly recieve their promotions notifications which I don't like at all.
Changely app might be new but their website is way older than binance itself.
Huobi and kucoin apps are good too. No delay in notifications.

that sucks if you dont recieve a notification on your prioritize app/platform  . recieving unwanted promotion do also suck but you can always unsubscribe by toggling the unsubscribe button on the buttom of the mail  .

about changely, i dont think this exchange is safe but yes this was older than binance  . houbi and kucoin are indeed good but i prefer kuckoin the most among all of the exhange that are explained above  . there are many exchange app right now but who says that you are going to use all of them ?
Looks like I somewhat fixed my notification issue. Thanks for your help. But I still receive promotional notifications not emails which I've already unsubscribed.
Changely is a very trusted exchange. But the biggest problem is they change their rate of exchange suddenly after we started the exchange.


Title: Re: Too many exchange apps
Post by: BigBoy89 on October 16, 2019, 10:39:06 PM
In general, I'm avoiding mobile apps due to security and UI problems.
The only good mobile app that I'm using from time to time in Binance.

If I need to use any other exchange on mobile, I prefer to see the whole 'Desktop' version. While it's kind of inconvenient on the phone screen, I have a known UI and all features.



Title: Re: Too many exchange apps
Post by: glendall on October 17, 2019, 07:36:49 AM
I only use binance because it's easy to use and fast enough to handle user problems,
for coinbase I have never used it in the smartphone app, but on my PC often, and for changelly I am not so sure even though many people talk about it,
and I also usually use the kucoin app, it's very light and fast because it doesn't have a long loading.


Title: Re: Too many exchange apps
Post by: V1saya on October 17, 2019, 07:41:09 AM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.


Three is not too many. My goodness!

The more the merrier. The more exchange apps the more choices we have. The more exchange apps the better the competition. The better the competition, the better services, competent fees and competent support.

I like Binance. One and only exchange app so far that I am using until now.


Title: Re: Too many exchange apps
Post by: 3DBrushes on October 17, 2019, 11:47:07 AM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.


Three is not too many. My goodness!

The more the merrier. The more exchange apps the more choices we have. The more exchange apps the better the competition. The better the competition, the better services, competent fees and competent support.

I like Binance. One and only exchange app so far that I am using until now.
Too many exchanges could also mean too many scams and less liquidity. Ofcourse the competition will increase but the small exchanges will suffer from liquidity issues. Small exchanges also face easy hacks. Users who uses these exchanges will complain. The more is not better in crypto exchanges.


Title: Re: Too many exchange apps
Post by: bering on October 17, 2019, 01:27:07 PM
Use too many exchange app will make you confused but you can eleminated one by one depend on the app features so use one or two is enough i think however currently i use exchange app but it's only for my local exchange to trading purpose and to convert my crypto assets to my local currency and their app review based on my personal experience also good that during use that there is no lagged or bugs issue


Title: Re: Too many exchange apps
Post by: nonbody on January 18, 2020, 06:04:08 AM
I often use mobile applications of exchanges. When I go out, I open my mobile phone to open these exchanges to view digital currency information.


Title: Re: Too many exchange apps
Post by: Byakuga on January 18, 2020, 07:40:05 AM
There are plenty of exchange apps, both for Android and iOS.
At the moment I've tested 3 most common apps:
- Binance - sometimes ok, but not for the first time I somehow can't go through KYC via this app. Notifications don't work correctly, etc.
- Coinbase - was ok even with slow support, but after they increased their fees to 0.5%... Well, sorry, not going to use it.
- Changelly - it's new, I don't know if it's stable and well-working, and there are not enough reviews, but I was satisfied with the web version though

My question is: does anyone use exchange apps? If so, which ones? If not - why not? Share your experience, please.

Binance app is the best one among the three you listed and please stay away from coinbase because they can't be trusted, i was cheated by them and they never fixed till today, changelly is my favourite insta crypto swap platform, never failed but too high fee


Title: Re: Too many exchange apps
Post by: smyslov on January 18, 2020, 10:23:37 AM
i use all exchanges only in browser.

i do not understand the hype to have a dedicated "app" for each trivial service, which i can visit as a website.

It's not that it's not good or issue about security, but I am more comfortable trading my coins with my desktop or laptop, I can have a good look on the chart than when I'm looking it on my phone, I can easily shit my tab when I am on my desktop than using my phone, I cannot speak for other users, when it comes to trading it's everyone for himself, where he is comfortable trading.


Title: Re: Too many exchange apps
Post by: Opekin on January 18, 2020, 11:11:41 AM
Well, i am using too many exchange apps as well and i do think that it is okay as long as the phone can manage to operate or run the app and of course the security of having it because of the passwords that you are going to input. so always be careful and only download trusted apps which is proven tested by many .