Hello! Thank you for your feedback! We are making cryptocurrency usage a mainstream! Both TestNet and MainNet versions are available in the App Store!

Yes, all smart in the wallet! even for crypto newcomers!

Yes, Billion also has the best UI/UX among all the existing cryptowallets!

Thanks for your support!
For more information, please subscribe to our Twitter: https://twitter.com/billionappl
Or join Billion App Chat: https://web.telegram.org/#/im?p=@billionapp_chat

Hello! Here's the list of our competitive advantages, making Billion the wallet of future:
1. SPV-wallet (there are just few of them on the market). Every user connects to blockchain directly without middlemen and totally controls his/her funds.
2. Transaction history is easy to undestand without long and uncomfortable addresses. Exchange rate is fixed for the chosen currency at the time of transaction.
3. There's an opportunity to add contacts and interact with them without e-mails and phone numbers. Thanks to the technology of Reusable Payment Codes, financial contacts are stored in blockchain. The problem of "copy address - paste to a messenger - send" is resolved in one tap in Billion.
4. Due to Reusable Payment Codes, Bitcoin address is re-generated into a new one each time before receiving funds.    This is how the problem of address reuse, which is typical for Bitcoin. Billion is the only realization of this technology on iOS.  There are all the features of mobile banking - sending payment requests, comments to requests and transactions. Using Billion is much more convenient, than other cryptowallets. 
6. Billion has an integrated agregator of Bitcoin exchange rates.

Hey! What are your questions?
P.S. F.A.Q. will be soon...

Thanks for your comment! You have very good understanding about the benefits of SPV wallets!

Hello! Both versions, TestNet and MainNet are available! The links to download are attached to the announcement top! In our app you can adjust Bitcoin network fee. It’s pretty unique feature among wallets. The main-net app works almost perfectly, so you can use it to manage Bitcoins. Version with Etherium is now in closed beta, we’re going to deliver it within 2 weeks.

Hey there, folks!

We are a team of cryptocurrency enthusiasts behind Billion Wallet (screenshot) for iOS. It's common among developers to think about their project in a special way, and we are not an exception – we do feel like we created something different. We believe we have a reason to think like that, and we invite you to participate in a public beta test that allows you to play with all features without spending real bitcoins ㋛. Just download Billion TESTNET Edition from the App Store.

Here is what's unique about Billion:

Privacy
Not only Billion never asks you to enter email or phone number, but it also implements a unique feature called Reusable Payment Codes. Payment Code is a special kind of address that can be freely published online and no one will be able to calculate the amount received. Kind of Monero Stealth Addresses but in a Bitcoin world! You can read a high-level overview of this technology on our Medium blog (a 10-min read).

Usability
To make cryptocurrencies easy to use for everyone we have developed an entirely new visual paradigm. If you ever experienced struggle while using a crypto wallet, we encourage you to try Billion – that's something new on the market. You can read a brief explanation of Billion user-interface on Medium as well (4-min read), or watch a 30 seconds-long promo video.

Social
One of the most important aspects of Billion is a system of contacts based on Payment Codes. Once you have added your friend to a list – either using Air Connectivity (Bluetooth connection) or by importing/scanning a Billion Card – you can make payments without any copying/pasting/scanning. This way, a payment workflow is simplified drastically, and the privacy is not sacrificed at all. Moreover, such a system is cross-platform: you can add contacts from other wallets that support Payment Codes. As of now, Samurai and Stash on Android are two wallets that support Payment Codes (and Stash can be used on TestNet).


How to Participate
1. Download Billion TESTNET Edition from the App Store
2. Create a new wallet. Once it's synced, tap onto the balance tab to display your Billion card. Assign a pseudonym and avatar to make it more recognizable.
3. Share your BillionCard picture in comments, or join a dedicated Telegram channel. We will send you some test-bitcoins so you won't need to use any faucets!
4. Add BillionCards of other users who participate in beta testing to your list of contacts (tap onto 'Contacts' icon -> 'Add contact' -> 'Scan BillionCard' -> 'Extract QR-code from picture' and choose the image you saved to media library). Send them some coins, and tell us how do you enjoy the workflow.
5. If you have friends with whom you can test Billion irl, we urge you to test Air Connectivity and Billion Requests.

Thanks for reading and let's create the best mobile cryptocurrency wallet together!

P.S.
- Yes, there will be Android version later this year.
- Yes, there will be support for your lovely cryptocurrency (what's yours btw?)
- Yes, the wallet is open-source, but we still can't move to public development, so the code-base published on git-hub is a bit outdated

We have to polish the version on a single platform with one cryptocurrency first, and we need your help. We are looking forward to testing Billion with you!

P.P.S Please upvote for visibility 🔝. Thanks in advance!

BIP47 Reusable Payment Code can be published online without a fear of tracking. It is impossible to calculate actual addresses from the outside.

Wallets that support BIP47 Payment Codes are:

• Samurai. Available on Android. Suppors Bitcoin only. Supports SegWit.
• Stash. Available on Android. Supports Bitcoin and Bitcoin Cash.
• Billion. Available on iOS. Supports Bitcoin only.

High-level overview of BIP47 Payment Codes is available on Medium

Billion – Bitcoin Wallet

Fellow Bitcoin users, we are delighted to invite you to participate in an open beta of a brand new Bitcoin wallet for iOS devices – Billion! A wallet that is extremely easy to use for people who are just entering the world of Bitcoin yet works in full harmony with the network.

Gorgeous user interface and hassle-free experience

We have developed a new visual paradigm of interaction with the most advanced financial system. Everything that is important is within a reach of a finger. All complexities are hidden under the hood. Making a transaction is now no harder than sending a message with WhatsApp.

A picture is worth a thousand words


System of Social Connections

With Payment Codes (aka SPV Stealth Addresses) two people can easily establish a secure payment 'tunnel' and make transactions whenever they need. Secure means there will never be an address reuse, and no one from the outside will be able to calculate the actual addresses.

You can publish a Payment Code anywhere on the internet or offline. No prying eyes would be able to monitor your financial activity. You can establish payment tunnels with users of other wallets, meaning no walled gardens. Apart from Billion on iOS, Samurai on Android supports this feature.

Establishing a tunnel requires a special one-time on-chain transaction that costs a fee, though it's a negligible amount of satoshis for those who have longterm financial relationships or desire a special privacy.

Technologies on which Billion is based on

• Bread SPV (Simple Payment Verification) and network engine that has been tested by thousands of users for years
• Private key management in compliance with BIP44; storage inside a secure enclave of iPhone – the best in smartphone industry hardware encryption solution. Your iPhone is your hardware wallet. Literally.
• BIP47 Reusable Payment Codes for Social Connections

Segwit2x statment

Due to a lightweight SPV architecture Billion is inherently vulnerable to an attack during which hostile miners produce a chain with modified protocol rules. Our vision is based on a fact that Bitcoin is anti-fragile, therefore we do not support any protocol changes that lack a consensus among majority of the participants.

Billion would be released on the App Store after the fork with hardcoded blacklisted hash of the first S2X block. That way, Billion will follow the Bitcoin chain with no regard to it's height. Users would need to make extra steps to properly split their coins between Bitcoin and S2X blockchains to protect themselves from replay attacks. Not a trivial task in case of S2X lack of replay protection yet we will provide a detailed manual prior to the fork.

Evolution Group Limited

We are self funded team of Bitcoin enthusiasts. Billion is open-source project managed by Evolution Group Limited (Hong Kong), available under the terms of MIT licence. Give us a star on GitHub!

Beta – Stage 1

Billion is in open beta development stage. You can join by sending an email request to info@billionapp.org. Prerequisites: iPhone running iOS 10+.

It is just the beginning