Use APKPure App
Get Quick Backup old version APK for Android
back up your apps.
Notice:It can only backup the apk files.(It can not backup app's data)
Quick Backup is a program for Android that lets you back up installed apps to SD Card.You can restore your apps from the SD Card.
You can also batch uninstall apps.
★By default,apps are sorted by name.
★input keyword to find apps that you want to backup/uninstall.
★batch uninstall apps.
★batch backup apps.
★Support android 2.2(froyo),2.3(Gingerbread).
★Support app2d(you can move the app to your SD card).