* Storage Cleaner - Very fast cleaning
* xCleaner completely wipes out by overwriting the free space with certain data.
* There are three cleaning modes and it has the following characteristics.
1. Zero Fill 1pass
- Empty spaces are filled with 0. The speed is a little fast, secure portion may be insufficient.
- It is useful when you want to delete the other app's cache or temporary files.
2. Random Fill 3pass
- Empty space fills three times with random values.
3. US DoD 5220-22.M 7pass
- Empty space fills 7 times with US DoD 5220-22.M.
- It is completely wiping but slowest.