Short answer..Can't.
The way android works makes it hard to have files remain after uninstalling software (Who wants files left behind when they uninstall. They do this to remove it from the system).
Instead I have made the file system attempt to save to external storage and later on we can add a backup option (at the moment you can copy it manually).
Need to encrypt before public release as well, currently it's open text.
Short answer..Can't. The way android works makes it hard to have files remain after uninstalling software (Who wants files left behind when they uninstall. They do this to remove it from the system). Instead I have made the file system attempt to save to external storage and later on we can add a backup option (at the moment you can copy it manually). Need to encrypt before public release as well, currently it's open text.