I found an app when I was searching for an app to recover the forgotten password of my office Wi-Fi network. I hope it will be helpful for someone else here. This app helps you to recover Wi-Fi passwords of the Wi-Fi networks that you connected previously. This is not a hacking app. It just helps you to recover forgotten passwords. Also, you can only use this app, if you have (dubious link deleted, moderator)You can simply download the app from Playstore for free.
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