Fiddle Tuner Music is an android application accordion tuner working with multiple musical instruments.
Digital Fine Chromatic Fiddle Tuner application is great with new features:

- Real Time Scope : Oscilloscope works fine and the adjustment knobs operate properly - a great aid in tuning and determining multipath with a superb vintage tuner with nice blue frequency tuning dial.
- Strobe: Strobe in this app is super accurate and super fast.
also
- Sound Oscilloscope
- Spectrum analyzer
- Spectrum: shows the current note.
- Display: shows the current results.
- Meter: shows the cents error up to plus or minus 50 cents.