My first app is finally published!
After a lot of iterations, my app Metra finally got approved and is stable.
I originally created it because, for my job, I often need to track the BPM of different music tracks, and I don’t always want to open professional audio software just to do that. Most tap tempo apps I found online either weren’t very accurate or were missing a proper metronome feature, so I decided to build my own solution.
The app basically lets you detect the BPM of a song with good accuracy and then immediately use a metronome synced to that BPM.
The hardest part by far was building a metronome that stayed reliable across different phones' hardware and audio inconsistencies. Timing issues that seem tiny become very noticeable in a metronome, so getting stable playback and low-latency behavior took way longer than expected… but I finally got it working properly.
The app is built with Flutter, which made the whole process surprisingly smooth overall.
Now my next challenge is ASO because downloads are still very low 😅
Would love any feedback:
