This utility app tests the write speed of your USB-C external drives on compatible iPhones. It provides a clear verdict on whether your drive can handle demanding video formats like ProRes, ensuring smooth recordings.





249+ iOS apps curated and reviewed
The best rec disk speed test apps on iPhone average 3.1★ 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 | 3.3★ (6) | No | No | Nov 2026 | ||
| 2 | Free | 3.4★ (11) | No | Yes | Oct 2026 | ||
| 3 | Free | 1.0★ (1) | — | No | May 2026 | ||
| 4 | Free | 2.0★ (1) | No | No | Oct 2026 | ||
| 5 | Free | 1.0★ (1) | No | No | May 2026 | ||
| 6 | Free | — | — | No | Sep 2026 | ||
| 7 | Free | — | Yes | Yes | Oct 2026 | ||
| 8 | Free | — | No | No | Oct 2026 |





This utility app tests the write speed of your USB-C external drives on compatible iPhones. It provides a clear verdict on whether your drive can handle demanding video formats like ProRes, ensuring smooth recordings.





Measure the storage speed of your device and external drives like USBs and memory cards. Identify bottlenecks in your workflow caused by cables, hubs, enclosures, or file systems to optimize data transfer.

Benchmark your iOS device's disk speed with this free tool. It provides accurate results and offers multiple test sizes for comprehensive analysis. Compare your performance with other users by leaving comments.