Wi-Fi Reminder is an app that basically lets you take a look at the history of the Wi-Fi networks you've connected to from your Android device. This app does not
decrypt passwords or help you 'nick' WiFi. It simply lets you store all the passwords for the WiFi networks you've ever connected to.
Using Wi-Fi Reminder is as simple as tapping one of the WiFi networks that appear on the list and taking a look at the password. That simple.