Monitor and optimize video transfer speeds between your iPhone and external drives. Verify data transfer rates and storage limits to ensure seamless file exchanges and prevent dropped frames.


248+ iOS apps curated and reviewed
Looking for free disk speed apps? 18 of our 248+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 4.5★ (25) | No | No | Oct 2026 | ||
| 2 | Free | 3.3★ (6) | No | No | Nov 2026 | ||
| 3 | Free | 1.0★ (1) | — | No | May 2026 | ||
| 4 | Free | 2.0★ (1) | No | No | Oct 2026 | ||
| 5 | Free | 3.4★ (11) | No | Yes | Oct 2026 | ||
| 6 | $2.99 | 4.5★ (30) | No | No | Oct 2026 | ||
| 7 | Free | 4.6★ (2.5K) | Yes | No | Nov 2026 | ||
| 8 | Free | — | No | No | Oct 2026 |


Monitor and optimize video transfer speeds between your iPhone and external drives. Verify data transfer rates and storage limits to ensure seamless file exchanges and prevent dropped frames.





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.

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.