Green: Bitcoin WalletApp Store
Our wallet review process
We examine wallets starting at the code level and continue all the way up to the finished app that lives on your device. Provided below is an outline of each of these steps along with security tips for you and general test results.
Application build test result
The description in the App Store is not explicit about the app being non-custodial and on their website we read:
Our innovative multisignature model uses dual private keys - one held by the user, and one by our servers. This allows us to enforce Two-Factor Authentication to protect your funds, while timelock smart contracts guarantee that users always retain full control of their coins.
This model never puts the provider in a position of being able to spend the user’s coins but the user cannot spend the coins neither until a predefined time elapsed, should their servers not cooperate.
While not uncontroversial, this is not custodial but so far nobody reproduced the build, so claims about security are not verifiable.
Tests performed by Leo Wandersleb
Do your own research
In addition to reading our analysis, it is important to do your own checks. Before transferring any bitcoin to your wallet, look up reviews for the wallet you want to use. They should be easy to find. If they aren't, that itself is a reason to be extra careful.