I like it. Nice clean and simple UI. Two critiques:
- The app size seems a little big for what it does. It's about 2.2M. For comparison, "Cache Cleaner+" is a similar app, but it only takes about 500k.
- It does not clear all cached data for some apps. For example, the game "Big Win Basketball" downloads a crapload of cached files to the SD card, which on my phone is an emulated SD card in internal storage. Running this app does not clean those files. If I go into the system app manager and clear the cache there, it clears much more data. It would be nice if your app could use the same method so the cleaning would be more thorough.
Note: The second critique issue is not unique to your app. I've tried a bunch of other cache cleaners and they generally do the same thing as yours (i.e. they do not fully clean the cache for some apps). There are a couple others like Cache Cleaner NG that have some ability to clean cache on the SD card, but they don't have as nice of a UI as yours, and they still don't clean everything that the system app manager does. If you could make your app clean in the same way the system app manager does, that would really set it apart from all the other cache cleaners.