249+ iOS apps curated and reviewed
The best hertz frequency reader apps on iPhone average 4.3★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.5★ (187) | No | Yes | Nov 2026 | |
| 2 |  | Free | 4.4★ (23) | No | Yes | Oct 2026 | |
| 3 |  | Free | 4.5★ (5.2K) | Yes | Yes | Nov 2026 | |
| 4 |  | Free | — | No | No | Jul 2026 | |
| 5 |  | Free | 3.7★ (12) | No | No | Oct 2026 | |
| 6 |  | $0.49 | — | No | No | Oct 2026 | |
| 7 |  | Free | — | No | No | Oct 2026 | |
| 8 |  | Free | 4.0★ (10) | No | No | Oct 2026 |
Transform your device into a professional audio analysis tool with real-time FFT, SPL monitoring, and advanced visualization. Record, analyze, and export high-quality audio and video data for various acoustic applications.
This application transforms your device into a precise sound analysis tool. It offers real-time frequency detection, visualization, and data logging for musicians, engineers, and curious individuals. Gain clarity and accuracy in understanding the soundscape around you.
Generate sound frequencies from 1Hz to 25,000Hz with a simple interface. Features include wave visualization, adjustable sensitivity, and multiple waveform options. Use it for hearing tests, pet training, or as a prank tool.
