TuneHaven: Guitar Violin Tuner

Cheap tuners guess. They flash "in tune" early, jump to the string THEY think you're playing, or read a harmonic and send you tuning up until a string snaps. TuneHaven is a tuner that asserts nothing it can't actually know:

• It never switches strings behind your back. It may suggest; you decide.
• It rejects octave errors that make other tuners read low strings wrong.
• It refuses to read a room it can't trust instead of showing you noise.
• "In tune" means in tune. The needle is live and honest, with no freezing and no early green.

Free means free. Every instrument, every tuning, the chromatic mode, custom tunings and reference tones: free, forever. No subscription, no ads, no account, no tracking. TuneHaven works fully offline, so nothing you play ever leaves your device. Don't take our word for it: check the Data safety section below. Nothing collected, nothing shared. The microphone is the only access to anything of yours the app asks for, and audio never leaves your phone. (The in-app purchase the store lists is the one-time Pro unlock, never a subscription.)

• 18 instruments: guitar, bass, double bass, ukulele, mandolin, banjo, tenor banjo, violin, viola, cello, charango, bouzouki, oud, cavaquinho, cuatro, balalaika, banjolele, lap steel, plus voice
• Standard, drop, open and fully custom tunings
• Chromatic mode for anything with a pitch
• Reference tones with real sampled instrument voices
• Learn: a free fundamentals course for every instrument, plus all 10 practice modes
• Chords: major & minor with full fingering diagrams, every voicing and playable strums, free
• Tools: metronome, drone, scales, circle of fifths, capo, recorder & more
• Left-handed mode, 9 meter styles, light/dark themes

TuneHaven Pro is a one-time supporter unlock: every chord type beyond major & minor, the course levels past the fundamentals, practice history & insights, String Health, the overtones view, extra colour palettes and a thank-you badge. Never a subscription, and nothing you already rely on will ever move behind it. The tuner itself is never gated.

Install free and tune up in seconds. No account, no ads, works offline.

Recent changes:
Practice keeps going: the drone and metronome now play through screen lock and app switches, with playback controls on the lock screen and a session timer.

New: pick which microphone feeds the tuner (USB and headset mics work), and go hands-free with a foot pedal or Bluetooth keyboard — every key rebindable.

Also: the tuner now says so honestly when another app takes the mic, and Settings is reorganized into clearer sections.