This app provides precise chromatic tuning for low-frequency instruments like bass guitars, double basses, and wind instruments. It offers advanced features like real-time pitch detection and a visual pitch graph for accurate tuning.






247+ iOS apps curated and reviewed
Every iPhone needs a few good bass tuner bt1 pro apps. We benchmark 247+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | $4.99 | 4.9★ (106) | No | No | Nov 2026 | ||
| 2 | Free | 4.6★ (1.7K) | Yes | No | Nov 2026 | ||
| 3 | Free | 5.0★ (2) | No | No | Oct 2026 | ||
| 4 | Free | — | — | No | Oct 2026 | ||
| 5 | Free | — | No | No | Aug 2026 | ||
| 6 | Free | 3.3★ (6) | Yes | Yes | Oct 2026 | ||
| 7 | Free | 3.7★ (118) | No | No | Oct 2026 | ||
| 8 | Free | 5.0★ (6) | No | No | Aug 2026 |






This app provides precise chromatic tuning for low-frequency instruments like bass guitars, double basses, and wind instruments. It offers advanced features like real-time pitch detection and a visual pitch graph for accurate tuning.






This app offers precise tuning for low-frequency instruments like bass guitars, cellos, and bassoons. It features advanced algorithms to accurately detect deep pitches, providing real-time feedback and a visual pitch graph for optimal tuning.




A fast and clean chromatic tuner for various instruments, including guitar, bass, and vocals. It offers haptic feedback, a pitch reference keyboard, and adjustable A=440 tuning. This app is completely free with no ads or subscriptions.