by Bayliss Labs

Stratotune for iPhone

Musicians and singers all over the globe are using Stratotune every day to tune their instruments accurately and easily.

The chromatic scale is definitely very helpful. For singers, it is helpful as when I sing a note, the tuner picks up exactly what note I sang. This is very helpful, especially for acapella singing groups. Very helpful tool! Highly recommend.

Recently updated with great support for tuning Bass Guitar and Double Bass with a new detection range down to a low 27.5Hz (A0). This also allows for lots more dropped guitar tunings.

Choose Stratotune because not getting started with the right tuning won’t be good for your playing, your instrument or your audience.

Stratotune is also the first tuner app on the market to provide the unique auto-tone ‘hands-free’ feature to make tuning by ear much easier for the guitar and other multi-string instruments.

Great app! Accurate and easy to use. Nice one for multi instrumentalists! Highly recommended. A+++


  • Adjust your instrument to any desired tuning
  • Reference tone generator for tuning by ear
  • Auto tone ‘hands-free’ feature plays back a reference tone when a note is played
  • Note lock feature allows manual or automatic pitch selection in each mode

Advanced Features

  • Ability to save and recall multiple profiles
  • Change the A4 pitch reference from the standard concert pitch (440Hz)
  • Set the transposition in order to support transposing instruments
  • Adjust the tone generator waveform
  • Set the letter notation to number of different styles including solfège and Northern European
  • Adjust the responsiveness of the fine tuning meter


  • Instrument Types: Any instrument capable of sustaining a tone in the detection range
  • Pitch Detection Range: 27.5Hz(A0) - 3520Hz(A7)
  • Tuning system: 12 Tone Equal Temperament
  • Tone generator: Sine,Square,Triangular,Sawtooth. Pitch range 16.352Hz(C0) - 8372Hz(C9)


Compatible with iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation) and iPad. Requires iOS 5.0 or later. This app is optimized for iPhone 5

Available in the AppStore