Sky Tuner: Instrument Tuner

SkyTuner is a professional tuning app for musicians and learners. It listens to your instrument through the microphone and shows pitch deviation on an intuitive semicircle gauge—with cent-level readouts so you know exactly when you're in tune.

Core Experience • Real-time precision tuning with cent-level feedback • In-tune alerts: sound, haptic, and gauge highlight when you stay within ±5 cents • Reference tones: tap a string to hear the target pitch • Adjustable A4 reference: 400–480 Hz for different ensembles and styles • English & Simplified Chinese UI

Supported Instruments Guitar, Ukulele, Bass | Violin, Viola, Cello | Piano | Standard Pitch A | Guzheng, Guqin, Pipa, Erhu, Xiaoruan, Zhongruan, Daruan, Kalimba | Twelve-Tone Equal Temperament (chromatic)

Popular tuning presets (standard, D tuning, and more). Auto string detection or manual selection.

More Features • Apple Watch: standalone chromatic tuner on your wrist • Home Screen widget: open your last used instrument in one tap • Noisy environment adaptation for more stable readings in practice rooms • Optional sound alerts and haptic feedback

SkyTuner Pro (Optional) The free version includes multiple instruments (up to 3 unlocked). Pro unlocks piano tuning, 12-tone equal temperament, unlimited instruments, and removes ads. Choose Yearly (1 year, no auto-renew) or Lifetime (one-time purchase).

Privacy Microphone access is used only for real-time pitch detection. Audio is not recorded or uploaded.

Tune every note with confidence—start with SkyTuner.

EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Terms of Use / Privacy Policy: http://app.music-glossary.com/skytuner-privacy.html#privacy

Questions or feedback? We'd love to hear from you at chuangke4589230@163.com