The Boomrang App is a prank calling app build by me. The backend is written in Golang on Appengine, using a Cloud Firestore in Datastore mode. Its connected to the app & website via a GRPC interface. The app is written in Flutter. The website is written in React/Next.js and runs on Vercel. All systems are on GITLAB and have CI/CD systems in place to auto deploy. The apps are deployed via Fastlane.
Status: Profitable & Growing, With over 100k downloads, 10k MAU.