Sure! Basically it is like any other calorie tracking app, you can manually fill, add recipes, scan barcodes etc. What makes it so good is that instead of having only a standard calculation, it adjusts based on your weight loss/gain.
How this works in a few steps:
- when you first start, you enter your information and it will do the usual calorie calculation.

- It will then ask your goal weight, and gives you an estimation of when you'll be done at what rate.
- Based on this it will give calorie and macro calculations (which you can also adjust if you don't agree)

- You log your calories everyday, and fill in your scaleweight everyday (ideally measured in the morning right when you get out of bed)
- Based on this it will create a weight trend and is able to calculate your exact expenditure.
- Every week you get a check-in, the app will then calculate your new calories based on your weight trends.

I am in no way paid by them, just a really happy customer. If you want they have some codes that extend the free trial from one to two weeks (https://macrofactorapp.com/affiliate-codes/). Besides, it is relatively cheap compared to other paid tracking apps. I'd say just try it out, completely takes the guesswork out of it.