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A1 SD Bench


A1 SD Bench is a free mobile app for testing sd cards performance. It determines the class of your device (depending on its actual speed) and shows its reading / writing speed in MB.

A1 SD Bench supports Internal memory, Internal/External SD cards (built-in, SD, Micro SD, SDHC and SDXC), usb sticks and even external HDD connected to a phone via USB.

A1 SD Bench - sd card speed class checker

4 micro sd speed tests are available for checking the speed of reading / writing: Quick, Longer, Accurate and Random I/O. You can test one or more sd cards and compare their or other memory cards results.

Benchmarking results can be compared with the characteristics of other memory cards; all charts are available through a special online service.

We suggest disabling unnecessary apps for successful and verifiable reading speed testing. At the same time, A1 SD Bench doesn't have a significant impact on Android OS functionality.

Download A1 SD Bench

Vlad Brown, USA, Buffalo, WY

Vlad is a professional writer. He has expert knowledge in data recovery with 15 years of experience. He started his career as a journalist by reviewing PC and mobile apps. His current responsibilities are to keep track of users' questions and answer them. 

His current responsibilities are to keep track of users' questions and provide answers to them, write proven manuals, be the website technical support and also run a Youtube channel.

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