Disk Speed Test - Disk Speed B is an Android app that allows you to test your disk speed and check disk performance. It's a useful tool for those who want to measure the speed of their phone's disk, especially when buying a new phone. The app comes with a special algorithm for filling space, which assures the best possible speed of operations.

The app has a good design and is simple to use. You just need to open the app and start the test. The app will show you the disk speed check result, which you can share permanently. And the best part is, it's completely free!