Self-custodial Bitcoin wallet using Lightning to send/receive payments
...Only you have it. It is your responsibility to make a backup of that recovery phrase. It gives full access to your funds, so do not share it with anyone. If you lose the recovery phrase, your funds are lost.
Bitcoin thin client for iOS & Android. Built with React Native
...It is preferred that you use an even-numbered version of Node as these are LTS versions. You will now need to either connect an Android device to your computer or run an emulated Android device using AVD Manager which comes shipped with Android Studio.