This an small utility app to fix write access error in Internal SdCard. This problem occurs in KitKat firmwares mainly on restoring nandroid backup. Consequences is, files won't get saved in int- sdcard.
To fix this, just tap on Fix me button in the app. This will restore the functionality of sdcard back to normal. If you still couldn't fix the error, tap on Download button to download an additional file fixer. You will be notified once the download is finished. All this process is automatic, so you don't need to manually manage the downloaded file.