OnChain.IO is an Open Source mobile Android Bitcoin Wallet. Basically the onchain.io is a Hierarchical deterministic Bitcoin wallet.It can issue Master Public Keys and sign P2SH transactions created with those keys.
- More functionality coming soon. i.e. spend and receive via QR code.
- The onchain.io app can be used as a safer form of 2 factor authentication. It is used by the https://www.onchain.io online wallet to split keys across devices.
- The onchain.io protocol for transaction signing has been implemented in the bitwasp project as a multi sig marketplace.
The source code is also available on GitHub for anyone to download and modify.