GymEssential BodyBuilding is a free data tracking app for any fitness enthusiast. It allows users to take photos, record body measurements and statistics, and major lifts. User can create simple "Before and After" comparison photos to see progress and view graphs of other statistical data. App provides various tools such as meal timer so you can schedule your meal alarms.
Also, the picture comparison is Instagram compatible i.e. when you create a before and after picture, the instagram crop box fits nicely on it.
For more details about the app, please visit gymessential.com
[Note]:I am unable to put a link in post as I do not have that privilege yet. I would really appreciate if you could search it on Google Play Store. Thanks