250+ iOS apps curated and reviewed
Smart Noise Detector is the household name in smart noise detector, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 | |
| 2 |  | Free | 2.0★ (5) | No | Yes | May 2026 | |
| 3 |  | Free | — | No | No | May 2026 | |
| 4 |  | Free | 4.4★ (54) | Yes | Yes | Sep 2026 | |
| 5 |  | Free | — | No | No | May 2026 | |
| 6 |  | Free | — | No | No | Sep 2026 | |
| 7 |  | Free | — | No | Yes | May 2026 | |
| 8 |  | Free | — | No | No | Jun 2026 |
This utility app measures and displays environmental noise levels in decibels. It offers various visual representations of sound data, including gauges, graphs, and min/avg/max values. The app allows for device calibration to improve accuracy, though it notes limitations with very loud sounds.
