Your password is kept secret, it's not even sent as plain text to the server. Also the app will only collect data, if you allow her to do so. It will also only collect data that it needs to present you the feel curve. No other data is kept. If you delete your profile and chose to make your existing data private, it will become private, and other persons will no longer be able to see it :). Enjoy the app!
Yours Antonio Noack