About this app
Professional chromatic tuner for Piano, Guitar, Violin. (E Tuner is tuned relative to A446 Hz) Features: - High Accuracy ±2 cent (±0.02 semitone) - Tone generator (20 - 20 000 Hz) - Frequency meter Tune your acoustic guitar with E Tuner free. App uses device microphone for precise tuning your musical instruments. Also app can use to Headphones test for engineer and professional sound designer. This helps choice headphones which one offers best performance.
Latest release
What’s New
This update from Apple will improve the functionality of this app. No new features are included. - iOS 11 support
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
- First observed Aug 18, 2026 · 3:35 PM Free
Screenshots
