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.
3.3(6 ratings)
Free
Best Diskio alternatives: apps like Diskio: Disk & SSD Speed Test
10+ similar apps compared and reviewed
3.2 avg rating
9 free apps
Updated November 2026
Diskio is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.
Top Alternatives to Diskio
Jazz Disk Bench Pro by Baofeng County Jixu Education Information Consulting Co., Ltd.
Storage Speed TestStrong Contender
๐ง Utilities
4.5(30 ratings)
$2.99
This tool measures storage performance for SSDs, SD cards, and internal/external drives. It provides accurate data on throughput using industry-standard testing methods for sequential speeds, random IOPS, and stress testing.
2.0(1 ratings)
Free
Accurately benchmark your SSD's read and write speeds with this user-friendly application. Get detailed performance metrics to understand your storage capabilities. Ideal for tech enthusiasts and professionals optimizing their systems.
