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Guitar Tuner H8 - A4 440Hz Pro

Guitar Tuner H8 - A4 440Hz Pro

Sze Kwok Cheung

4.5
About this app
  • Category Music
  • Age 10
  • Updated Nov 17, 2025
  • OS IOS
Editor reviews
Guitar Tuner H8 - A4 440Hz Pro is a fast, accurate guitar tuner app for guitar, bass, ukulele, and other string instruments. It delivers a clear needle and strobe-style display, chromatic detection, and a stable A4 440Hz reference with adjustable calibration for any performance or practice setting. Ideal for beginners and pros who need a reliable, easy-to-use tuner on stage, in the studio, or at home. Key features - Chromatic tuner with high precision and instant pitch tracking - A4 440Hz reference with flexible calibration to match other instruments - Presets for popular tunings plus clear visual guidance and reference tones Keywords Guitar tuner app, 440Hz, chromatic tuner, instrument tuner, alternate tunings, pitch pipe, pro tuning
App Store
Ratings
4.5
  • 5

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  • 1

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How to use:
1. Install and open the app, then grant microphone access for accurate pitch detection. 2. Select your instrument and a tuning preset, or switch to Chromatic mode for any note. 3. Pluck a string and watch the needle or strobe; tighten or loosen until the indicator centers and shows in tune. 4. Tap the A4 setting to adjust calibration if you need to match a non 440Hz reference. 5. Use the pitch pipe to play reference tones and verify tuning across strings or chords.
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