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Author Topic: BExR – Bitcoin (and other cryptocurrency) exchange rates [Android app]  (Read 38 times)
StuffOfInterest
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June 23, 2018, 12:18:36 PM
 #1

Several years ago I wrote a piece of software used by quite a few miners to control their rigs with multi-pools.  That software is now retired as there are better options, although fewer multi-pools, available.  About a year ago I decided to tackle building a mobile application.  The result of that has been BExR, and Android application for crypto-currency exchange rates.

BExR has several functions.  

BExR can show the exchange rates at several currency exchanges on one screen so you can do side-by-side comparison.  This is done by accessing the public API services at the exchanges on demand or on a scheduled basis.  No central server is required; you are getting the data directly from the exchange.

BExR can provide alerts when exchange rate thresholds are passed.  This currently only works for exchange against Bitcoin through the Blockchain.info site, but it will give you alerts when different currencies pass set thresholds either rising for falling.

BExR can display exchange rates on your home screen.  See the current exchange rate for different crypto-currencies at several exchanges on your home screen with an application widget.  The information to display can be customized to include trend arrows and how much the rate has changed during the day.

Interested? Get it from the Play Store.

Development is ongoing, but it is not my primary focus.  Any suggestions for new features are welcome.  Depending on how hard they are to implement I’ll see about honoring them.



Description from the Play Store

BExR (Bitcoin Exchange Rates) allows you to get instant exchange rates between cryptocurrencies (Bitcoin and several altcoins) and many world currencies.

~ Choose between multiple exchanges.
~ See rate at multiple exchanges for a single currency.
~ See trend as the rate changes.
~ Get notified when the exchange rate passes a threshold for a given currency.
~ Share current rates with others.
~ Receive notification when the exchange rate passes set thresholds for selected currencies.
~ See conversion rate between currencies by passing through Bitcoin (buy Bitcoin and sell for another currency).
~ Widget to show current exchange rate (against a selected currency) in your launcher for any supported cryptocurrency and exchange.

Exchange rate information is provided by multiple services:
~ Blockchain (https://blockchain.info)
~ Bitfinex (https://www.bitfinex.com)
~ Bitstamp (https://www.bitstamp.net)
~ Bittrex (https://bittrex.com)
~ BTC China (https://www.btcc.com)
~ Coinfloor (https://www.coinfloor.co.uk)
~ CEX.IO (https://cex.io)
~ Gatecoin (https://gatecoin.com)
~ GDAX (https://gdax.com)
~ Gemini (https://gemini.com)
~ Kraken (https://www.kraken.com)
~ OKCoin (https://www.okcoin.com)
~ Poloniex (https://www.poloniex.com)

Supported cryptocurrencies include:
~ Bitcoin - BTC (https://bitcoin.org)
~ Bitcoin Cash - BCC/BCH (https://www.bitcoincash.org)
~ Dash - DASH (https://www.dash.org)
~ Ethereum - ETH (https://ethereum.org)
~ Ethereum Classic - ETC (https://ethereumclassic.github.io)
~ Litecoin - LTC (https://litecoin.org)
~ Monero - XMR (https://getmonero.org)
~ Ripple - XRP (https://ripple.com)

Manual refresh is limited to once each minute to avoid excessive requests to the rate providers. Automatic background refresh can be configured for varying times from as short as five minutes up to three hour intervals.

BExR exchange rates on your phone's home screen.
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StuffOfInterest
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June 23, 2018, 12:19:00 PM
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Versions

2.2.1 – Added improvements to the app widget.
2.2.2 - Improve app widget sizing.
2.2.3 - Only allow installation to internal storage.  Necessary for the app widget to function.

BExR exchange rates on your phone's home screen.
Miner Control to get auto algorithm switching for multiple mining services. (please donate if you like)
Could Proof of Blockchain (PoBC) help secure a coin and avoid runaway ASIC mining?
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July 21, 2018, 06:55:51 PM
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Just uploaded version 2.2.2 to the Google Play Store.  This release corrects an issue with app widget sizing on some tablets and centers the widget in whatever space you give it on the desktop.

BExR exchange rates on your phone's home screen.
Miner Control to get auto algorithm switching for multiple mining services. (please donate if you like)
Could Proof of Blockchain (PoBC) help secure a coin and avoid runaway ASIC mining?
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September 01, 2018, 11:12:14 AM
 #4

Just uploaded version 2.2.3.   Only change is to restrict installation to internal storage, rather than on a SD card.  The app widget (or anyone's app widget) won't function if an app is installed on and SD card.

BExR exchange rates on your phone's home screen.
Miner Control to get auto algorithm switching for multiple mining services. (please donate if you like)
Could Proof of Blockchain (PoBC) help secure a coin and avoid runaway ASIC mining?
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September 02, 2018, 02:59:12 PM
 #5

I'm loving the widget part but found few errors:

1. For some reason I have to use a VPN or else it doesn't load for me (perhaps it has to do with the server's location).
2. Whenever I choose a different currency for the rates (middle option for the widget), the exchange options (last one) also changes. Why?

StuffOfInterest
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September 02, 2018, 06:05:51 PM
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Item 1, I'm not sure what is going on.  BExR doesn't use a central server.  The application connects to the exchanges listed on the "about" page and downloads rates directly from them.  It seems odd that you would be blocked from all of them.  All I can suggest there is to check your settings.

Item 2, not all exchanges carry all currency pairs.  Because of this, the list of exchanges has to be reset each time you change either the source currency or destination currency.  I'll see about adding in an option to keep the same exchange if it is still valid after you change the currency, but as it doesn't keep the program from working it won't be a high priority.

Glad you like the widget!

BExR exchange rates on your phone's home screen.
Miner Control to get auto algorithm switching for multiple mining services. (please donate if you like)
Could Proof of Blockchain (PoBC) help secure a coin and avoid runaway ASIC mining?
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