An App to Count Calories: Effortless Food Tracking on Mounjaro or Wegovy

Mounjaro (tirzepatide) and Wegovy (semaglutide) are once-weekly injectable medicines that act on appetite-regulating pathways, and many people find their hunger and "food noise" reduce significantly. That change is helpful, but it also introduces a new challenge: eating too little — particularly too little protein — can lead to muscle loss rather than fat loss, and leave energy levels lower than they need to be.

Tracking what you eat gives you a clear picture of whether your reduced intake still covers your nutritional needs. In particular, most people on a GLP-1 medicine benefit from keeping a close eye on:

• Protein intake — widely recommended at higher levels when eating in a calorie deficit to help preserve muscle mass
• Total calories — to stay within a sensible deficit without accidentally under-eating to an unsustainable level
• Fibre and hydration — GI side effects such as constipation are commonly reported, and both fibre and fluid intake can be relevant factors to monitor

General educational guidance suggests a moderate daily calorie deficit, but the right target for any individual depends on their circumstances and is best discussed with their prescriber or doctor. If you want to understand how a calorie deficit works and how to approach one sensibly, the guide to maintaining a calorie deficit on GLP-1 medication covers the principles in depth.

Using a calorie-counting app removes the mental load of adding up numbers manually. It also creates a log you can actually refer back to — useful when you are trying to understand whether a plateau is linked to what you are eating, or when you want to talk through your nutrition at a prescriber appointment.

If you are looking at the options available, pages like how to count calories effectively and what makes a good calorie-counting app can help you think through what to look for.

The feature that makes the biggest difference day-to-day is AI photo scanning. Open GLP Trackr, point your camera at whatever is on your plate, and the app returns an instant calorie and nutrition breakdown — no searching, no typing, no guessing portion weights. For people whose appetite has changed and who are eating smaller, less predictable meals, this removes the biggest friction point in food logging.

When a photo scan is not the right tool — packaged food, for example — the barcode scanner reads the label in seconds. And for anything else, manual search covers a broad food database. The result is a food log that takes under a minute per meal rather than a chore that gets abandoned by day three.

Beyond logging individual items, GLP Trackr lets you set personal targets for calories, protein, water, fibre and steps, and tracks progress against them throughout the day. You can see at a glance whether you are on track with protein — often the hardest goal to hit when appetite is low — or whether hydration is lagging, which matters given that constipation and headaches are among the more commonly reported side effects.

The app also includes a library of GLP-1-friendly meal ideas built around protein and foods that tend to sit well when appetite and digestion are in flux, so you are not starting from a blank page at mealtimes.

For a broader look at how other people compare calorie-tracking tools built for this kind of journey, the best calorie-counting apps for GLP-1 users is worth a read.

As always, general nutrition information is a starting point, not a substitute for guidance from your prescriber or doctor — they know your full health picture and are best placed to advise on targets that suit you specifically.

Ready to make food logging something you actually keep up with? GLP Trackr is free to try for 7 days — download it on the App Store or Google Play and see how the photo-scan logging fits into your daily routine.