If your calorie tracking app is also writing information to Apple Health, we can pick that up and show it in our charts.
To integrate MealPrepPro with Apple Health, tap on Profile > Health Sync and switch this to on.
Each time you tap Eaten on a meal, the calories and macros will be sent to Apple Health. MealPrepPro will also sync your water intake to Apple Health.
To pull info from other calorie tracking apps into MealPrepPro, you'll need to make sure those apps are also syncing to Apple Health.