An Android app for sending and receiving crypto with a phone tap, with a wallet, merchant checkout and human-readable ENS names.
Bump is for making crypto payments feel as quick as a contactless card. I set the product goal and the flows: a wallet, a merchant checkout, and payment records in one app. Claude Code wrote most of the Expo and Android code, the NFC integration and the release pipeline. I decided the product behavior and kept the fixes that made the app work on a phone.
A release build broke the Android NFC modules, so they had to be restored by hand before the build worked again.
I described each flow by what a person would tap and see, then asked for one fix at a time. I tested each change on the device before asking for the next one.