Jazz Disk Bench Pro

The lite version of this app does a quick benchmark speed test of the internal SSD. So I purchased the pro version for a dollar because it supposedly does a speed test of my external SSD. But it does not do this. The app itself is horribly designed and just doesn't make sense. On the settings tab I can select an external. However, there is no way I can actually test this drive. This app is useless. You get what you pay for. Except in this case it's not even worth a dollar. Just stick with the light version if you want to test the internal SSD speed.

It only tests internal speeds. If I knew this I would not have paid a dollar for it. I know what my internal drive speed is. There are thousands of benchmarks on the internet. Refund please.

The app tests sequential and random read/write as expected. With modern SSDs and their complex caching schemes, it would be nice to have more configurability in this app: >10GB sequential R/W, configurable queue depth for random R/W, some sort of reporting on the Brand/Vendor/type of SSD that is in the device.