PitchUp is an open source project that provides a tuner for instruments(for now, only guitars) based on pitch using the smartphone or smartwatch microphone. It's an open source project, it's free, it has got no ads and it will always be like that.
If you are interested in contributing towards the library core development or the Smartphone and Wear apps. Please check out the project webpage: https://lbbento.github.io/pitchup/
Feel free to use the library for your own project, within the LICENSE limitations and as you know, open source projects depend on you support and giving the app 5 starts really helps.
Features planned for next releases:
- Add support for more instruments. - Be able to play an specific note for manual tuning. - Add more gauges and different visualisations when tuning an instrument.