oTuner

OTuner

oTuner is a free, cross-platform auto-tuning application for musical instruments like guitar, bass, violin, and more. It listens to the sound played and gives visual feedback to help tune instruments quickly and accurately.
oTuner image
instrument-tuning guitar-tuning music-tuning

oTuner: Auto-Tune Guitar & Bass

Free auto-tuning app for musical instruments, providing instant visual feedback for quick and accurate tuning

What is OTuner?

oTuner is a free auto-tuning application for Windows, Mac, Linux, iOS, and Android devices. It uses your device's microphone to listen to notes played on a musical instrument and provides visual feedback to help tune the instrument accurately.

With oTuner, musicians can easily tune guitars, basses, violins, ukuleles, and other string instruments. It detects the frequencies played and shows how close you are to the perfect pitch on an easy-to-read display. LED rings and gauges clearly indicate if a note is sharp, flat, or in tune.

Key features include:

  • Works completely offline for privacy and convenience
  • Chromatic tuning from C0 to B7 with adjustable reference frequency
  • Support for alternate tunings like drop D, open G, and more
  • Calibration tools to optimize for ambient noise in your environment
  • Note name and octave identification
  • Share tunings settings easily between devices

With its simple interface, oTuner makes tuning fast and frustration-free. The app is available free with no ads or subscriptions required. If you play guitar, bass, violin, or other fretted instruments, oTuner is an essential tool for your music kit.

OTuner Features

Features

  1. Listens to instrument sound and provides visual feedback for tuning
  2. Supports guitar, bass, violin and other string instruments
  3. Available as mobile app and desktop application
  4. Analyzes pitch and displays how close note is to perfect tuning
  5. Allows tuning to different temperaments like equal, just, Pythagorean
  6. Saves custom tunings for quick selection
  7. Provides chromatic tuner and drone tones
  8. Adjustable calibration, sensitivity and pitch detection
  9. Free, no ads or paid upgrades

Pricing

  • Free
  • Open Source

Pros

Accurate and responsive pitch detection

Easy to use interface

Supports many different instruments

Customizable options for advanced users

Free with no ads or limitations

Cons

Lacks some features of paid tuner apps

Mobile version lacks some features of desktop app

Pitch analysis not as advanced as dedicated hardware tuners


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