Android: Lazarus on the desktop is a lifesaver when your browser crashes while you're entering form data. TypeMachine performs the same function on Android.
The app logs any text you input in Android. If an app crashes, you can just hop into TypeMachine and recover it. You can set it to ignore certain apps, which is helpful for banking apps. You can also set a PIN lock on your history so anyone poking around your phone will have an extra roadblock to get through. Because it runs in the background, it's important to set up any security measures first (which is particularly important on a smartphone).