This app is an app which is used to format sd card data.
Sd Card Formatter - format sd card Data is an app which is used to format sdcard data.
Just click on the erase button.
Sd Card Formatter will erase the data only on SD card .
with Sd card formatter and card you can will erase all the data on the Memory card of the phone.
Check the folder and erase There will be no backup of the data ,everything will be erased permanently.