Doesn't Work
I have a CCK with an SD card connected. This app can't see it. Pretty much useless then.
Useless
This seems identical to iExpand. It doesn't detect an SD card attached via the SD card lightning connector, so does nothing at all.
Not enough ratings yet to assess SwitchMemory.
SwitchMemory appears legitimate, with a few gaps. AppsHunter Legitimacy Score for SwitchMemory is 73/100.
Based on 73 of 100 points across 7 verification signals from App Store and developer data.