I've recently released my new app Weight Recorder (by Pig Dog Bay) that logs your daily weight measurements and displays them in a chart. The app helps you to monitor your diet progress and stay on track.
To differentiate my app from other apps, I've implemented a simple but fully featured CRUD interface so that the user has full access to their data and even export it via email. Another nice feature is that the user can add a comment on each weight reading so that they can make notes on their diet progress.
You can download the app from