I use a dedicated macros app. The yearly cost is reasonable and the interface feels a bit rough at first but works fine once learned. Creating custom recipes and setting my own portion sizes is handy, plus it offers a choice between net carbs and total carbs.
I used to rely on a calorie tracking app but the barcode scanner now requires a paid plan, which is disappointing. What are others using for macros instead? Focusing on those rather than just total calories should help more with fat loss. Android user here if it matters.