What Is the Best Calorie Counting App When You're on Mounjaro or Wegovy?

On a standard calorie-counting app, you search a database, weigh ingredients, and build entries from scratch. That workflow was designed for people eating three full meals a day — not for someone whose appetite has shifted significantly and who may be eating smaller, more protein-focused portions at unpredictable times.

Speed and ease of logging

When food noise is low and appetite is reduced, the last thing you want is a clunky interface. The most useful apps offer a barcode scanner for packaged food and, increasingly, an AI camera scan so you can photograph a home-cooked meal and get an instant calorie and macronutrient estimate — no manual entry needed. This is especially valuable if you cook from scratch, which many people on GLP-1 medicines find suits them better than large restaurant portions.

Protein tracking, not just calories

Many healthcare professionals recommend prioritising protein on a GLP-1 journey to help preserve muscle as weight changes. A capable app should track protein prominently alongside calories — ideally setting a daily target and showing progress toward it throughout the day. Fibre and water targets are also worth monitoring, since gastrointestinal side effects are commonly reported and both can be relevant to managing them day-to-day.

Integration with the rest of your journey

Food data is most meaningful when it sits alongside weight, energy, sleep, and mood. An app that connects your meals to your progress — rather than existing as a standalone food diary — gives you genuinely useful insight into what is and is not working. Our guide to calorie counting apps for GLP-1 users explores this in more detail, and if cost is a factor, you can also read about free calorie counting app options worth considering.

For context on how calorie tracking fits into the bigger picture of managing your weight on a GLP-1 medicine, the guide to calorie deficit and GLP-1 weight loss is a helpful starting point.

GLP Trackr's food logging is built around a single insight: on a GLP-1 medicine, logging needs to be faster and smarter than a traditional food diary allows.

AI photo scan — point and log

The standout feature for home-cooked meals is the AI photo scan. Point your phone camera at your plate and GLP Trackr estimates calories, protein, carbohydrates, and fat automatically. For packaged food, the barcode scanner pulls nutrition data instantly. Manual search is always available as a fallback. Whether you're eating a full meal or a few bites, the friction of logging stays low.

Protein and calorie targets together

Within the app you can set daily targets for calories, protein, water, and fibre — and your food log feeds into all of them simultaneously. Rather than chasing one number in isolation, you get a joined-up view of whether the day is on track across the dimensions that matter most on a GLP-1 journey.

Meals that connect to your progress

Food data in GLP Trackr sits alongside your weight log, morning check-ins, and insights — so over time you can see how your eating patterns relate to your results. The app's GLP-1-friendly meal plans and recipe library also give you ready-made ideas built around protein-first, gentle-on-the-stomach eating.

If you want to explore how the app compares to other approaches, see our overview of what to look for in a calorie counting app, or read about calorie counting when the goal is weight gain — a different but equally valid use case.

GLP Trackr is available free on the App Store and Google Play, with a 7-day trial so you can explore the food logging, targets, and meal plans before committing. Give it a try and see whether it fits the way you actually eat now.

GLP Trackr is an information and tracking tool, not a source of dietary or medical advice. For personalised guidance on calorie targets or nutrition during your treatment, speak with your prescriber or a registered dietitian — they know your full history and circumstances.