This wallet been built by a group of privacy minded engineers.
It's been 2.5 years in development and by now there have seen 16 releases to production https://unstoppable.money.
Below is a brief summary of the wallet app here, highlighting uniques features.
1. Native Wallet
Unstoppable is a one of the few natively built mobile wallets, built using Swift on iOS and Kotlin on Android. Using native platforms opens up a lot of capabilities not available in pseudo native implementations using ReactJS etc.
2. Non-Custodial
Fully non-custodial without dependencies on third-party managed servers. The core wallet features are fully decentralized to ensure wallet can function in all scenarios. It's also one of the few wallet with verifiably open code as per walletscrutiny[.]com .
3. Strong on Privacy
Ability to operate fully in peer to per mode (SPV + wallet restore) including TOR capability (android only). Moreover Unstoppable implements additional privacy features improving transaction privacy on any UTXO based blockchains i.e. Bitcoin and Bitcoin Cash chains.
4. Standard Compliant
Unstoppable is the only smartphone wallet that can both create and restore all standard compliant Bitcoin wallets. Wallet created in this app can be ported to other standard compliant wallets and vice versa.
5. Educational Aspects
Integrates a lot of howto and educational guides covering cryptocurrency fundamentals. Learn how transactions, fees, privacy and security works etc.
6. Decentralized Trading
The wallets supports decentralized trades (currently only for Ethereum tokens). While currently users are restricted to trading Ethereum and Ethereum based tokens there is work in progress to integrate trading of Bitcoin and Bitcoin Cash via renBTC and renBCH, respectively.
Would appreciate any feedback we can receive here.