Use APKPure App
Get Get Saved Wifi Passwords old version APK for Android
WiFi Recovery Key (Need Root)
WiFi Key Recovery
"Get Saved Wifi Passwords" recovers all wireless network security keys/passwords (WEP/WPA) stored in your device
Have you ever forgotten the password of your home WiFi network ?
This application will help you recover the password of a wireless network you have connected to with your device in the past.
Disclaimer:
This application doesn't hack wifi