The Best Free Calorie Counter App with Macros for GLP-1 Users

When appetite is suppressed, the challenge shifts from eating less to eating well — enough protein to preserve muscle, enough fibre to support digestion, enough calories to sustain energy. A macro counter app is most useful when it makes logging quick enough that you actually do it consistently, even on low-hunger days.

Macros that matter most on GLP-1 medicines

Protein tends to be the priority macro for people on tirzepatide or semaglutide. Because overall food intake often falls, hitting a daily protein target without tracking it is surprisingly difficult. A calorie counter that surfaces protein clearly — not just total calories — helps you spot the days when you have eaten very little protein before it becomes a pattern. Fibre and fat matter too: fibre supports gut comfort, and adequate fat supports energy and satiety across the week.

Speed of logging

On days when food noise is low and meals are small, a lengthy logging process is a barrier. The most practical apps offer at minimum a barcode scanner for packaged foods and a searchable food database. AI photo scanning — pointing a camera at a plate and getting an instant macro breakdown — removes almost all friction from the process.

Targets that adapt to your context

General educational ranges for protein sit around 1.2–1.6 g per kilogram of body weight for people focused on muscle retention during weight loss, though individual needs vary and any personalised targets should be discussed with your prescriber or a registered dietitian. An app that lets you set and revisit calorie, protein, fibre, and water targets in one place is more useful than a standalone macro calculator.

For a deeper look at how macro targets are calculated, see our macros calculator guide. If you want a broader overview of calorie tracking tools, our free calorie calculator app comparison covers what to look for across options. You can also explore our main calorie calculator hub for everything from TDEE to daily targets.

GLP Trackr's food logging is built around the reality that people on GLP-1 medicines often eat small, varied meals at unpredictable times. The fastest way to log is the AI photo scan: open the app, snap a photo of your meal, and the app returns calories, protein, carbohydrates, and fat instantly — no searching, no barcode required. For packaged foods, the barcode scanner pulls nutrition data in seconds, and a manual search covers everything else.

Once you have logged a meal, GLP Trackr updates your running macro totals in real time, so you can see at a glance whether you are on track for your protein target before the day is over. You set your own calorie and macro goals inside the app — adjustable at any time — and the daily check-in keeps those targets visible alongside your weight, energy, and water intake.

For people who want less decision-making around food, the built-in meal plan and recipe library offers GLP-1-friendly options built around protein and gentle-on-the-stomach ingredients, with easy swaps when appetite is unpredictable. Pair this with the macro counter features to build a clear picture of your weekly nutrition patterns.

All of this logging flows into GLP Trackr's insights — the app can surface correlations between your protein intake, your energy levels, and your weekly progress, giving you something concrete to discuss at your next prescriber appointment. GLP Trackr is a tracking and journaling tool; it is not a substitute for personalised nutrition advice from your healthcare professional, and any specific dietary targets should be agreed with them.

Ready to see how effortless macro tracking can be on a GLP-1 journey? Download GLP Trackr free on the App Store or Google Play — your first 7 days are on us, with no commitment required.