5 best calorie and protein tracker apps (2026)
Most calorie tracker apps bury protein behind tabs. Most protein trackers ignore calories. The best calorie and protein tracker apps keep both numbers visible and make daily logging fast enough to actually stick with.
Quick answer
Proto is the strongest fit if you want protein front and center with calories visible in the same view. MyFitnessPal is better if you need the largest food database. Cronometer is best for detailed nutrition data. MacroFactor suits people who want adaptive calorie targets. Lose It! is the simplest entry point if you are new to tracking.
If calories are not your main concern, our roundup of the best protein tracker apps for iPhone is a better starting point.
Comparison at a glance
| App | Best for | Price | Protein visibility |
|---|---|---|---|
| Proto | Protein-first logging with calories visible | Free trial, subscription | Front and center |
| MyFitnessPal | Largest food database | Free tier, paid Premium | Available, calorie-first UI |
| Cronometer | Deep nutrition and micronutrient detail | Free tier, paid Gold | Good — requires setup |
| MacroFactor | Adaptive calorie targets based on real data | Paid subscription | Good — macro-forward UI |
| Lose It! | Simple calorie tracking for beginners | Free tier, paid Premium | Available, not prominent |
The 5 best calorie and protein tracker apps
1. Proto — best for protein-first tracking with calories visible
Proto is built around a protein-first workflow: your protein target is the headline number, with calories and fiber visible beneath it. This matters because most people tracking both calories and protein find it easier to start with protein — high-protein meals tend to keep calories in range naturally.
Logging is fast. Photo-based meal capture estimates protein and calories from a picture, saved meals relog in one tap, and smart reminders flag when your protein is tracking low before dinner. The interface stays out of your way, which makes it easier to maintain the habit past the first two weeks.
Best for: People who want to hit a protein goal while
keeping an eye on total calories without managing two separate apps.
Price: Free trial, then subscription.
2. MyFitnessPal — best for the largest food database
MyFitnessPal has the biggest food database of any tracker app — millions of entries including restaurant meals, branded products, and user-submitted foods. If your diet involves a wide variety of packaged foods or meals out, the database coverage is hard to match.
The tradeoff is that the interface is calorie-first. Protein is tracked but lives in a secondary view, and the free tier includes ads. If protein is genuinely as important as calories for you, you will need to build the habit of checking the macros tab separately. For people who mainly want calorie counting with protein as a secondary number, it works well.
Best for: People who need the broadest food database and
do not mind a calorie-first interface.
Price: Free tier with ads, paid Premium removes ads and
unlocks additional features.
3. Cronometer — best for detailed nutrition data
Cronometer tracks calories and protein alongside a full micronutrient breakdown — vitamins, minerals, amino acids. If you are tracking protein for performance or health reasons and also want to monitor iron, calcium, or other micronutrients, Cronometer gives you more data than any other app on this list.
The interface is more dense than Proto or Lose It!, and the logging flow is slower — it is built for precision rather than speed. The free tier is solid, and the paid Gold tier adds a food scoring system and advanced reporting. A strong choice for people who want rigorous data and are comfortable with a more complex interface.
Best for: People who want calorie and protein tracking
alongside detailed micronutrient data.
Price: Free tier, paid Gold subscription.
4. MacroFactor — best for adaptive calorie targets
MacroFactor sets your calorie target dynamically, adjusting each week based on what you actually logged versus what the scale shows. This is useful for people who have found that standard calorie calculators do not match their real metabolism. The app tracks protein and all macros clearly, with a clean interface and strong logging features.
It is subscription-only with no free tier beyond a trial, which puts it at a higher price point than the others. For people who are serious about body composition and want a smarter calorie target, the adaptive algorithm is genuinely useful. For casual tracking, the added complexity may not be worth it.
Best for: People who want calorie targets that adapt to
their real-world data rather than fixed estimates.
Price: Paid subscription.
5. Lose It! — best simple entry point for new trackers
Lose It! is the most approachable app on this list. The onboarding is quick, the interface is friendly, and the free tier is genuinely usable. Calories are the main focus, but protein tracking is available and easy to find. Gamification features — streaks, badges, challenges — help beginners build the habit.
For people who have never tracked food before and find the idea overwhelming, Lose It! reduces the friction. The protein features are not as prominent as Proto or MacroFactor, so it is a better fit for calorie-first tracking with protein as a secondary number.
Best for: Beginners who want an easy entry point to
calorie tracking with protein available.
Price: Free tier, paid Premium.
How to choose between a calorie tracker and a protein tracker
If weight loss is your main goal, calorie tracking is typically the primary tool and protein tracking helps you stay full. If muscle building or body composition is the goal, protein is the number that matters most and calories provide a useful check.
Most people tracking both find it easier to set a protein target first and let calories follow. A high-protein meal naturally keeps total calorie intake more manageable. Starting with protein and checking calories at the end of the day is a simpler workflow than managing both numbers equally throughout the day.
If you want a deeper look at why protein-first tracking tends to work better, read why choose a protein-first macro tracker. For guidance on picking the right app workflow, see how to choose a macro tracking app.
Takeaway
The best calorie and protein tracker is the one you will actually log in every day. For a protein-first workflow with calories visible, Proto is the strongest fit. For the largest food database, MyFitnessPal. For detailed nutrition data, Cronometer. For adaptive calorie targets, MacroFactor. For beginners, Lose It!.
Please note: Proto does not provide medical or dietary advice. Always consult a qualified healthcare professional to determine appropriate protein or calorie intake for your needs.
Frequently asked questions
What is the best app to track both calories and protein?
The best calorie and protein tracker is one that keeps both numbers visible on the same screen and makes logging fast enough to use every day. Proto is the strongest fit for a protein-first approach that also shows calories. MyFitnessPal is better if you want the largest food database.
Should I track calories or protein first?
Most people find it easier to hit their calorie goal when protein is prioritised first. High-protein meals tend to be more filling, which naturally keeps total calories in range. Tracking protein first and letting calories follow is simpler than managing both numbers equally.
Is a free calorie and protein tracker app good enough?
Yes for most people. MyFitnessPal and Lose It! both have genuinely useful free tiers. The main limitations are ads and some features locked behind subscriptions, but the core logging is free.
How accurate are calorie and protein tracker apps?
Accuracy depends on the food database and how carefully you log portions. Apps with barcode scanning and photo logging tend to be more accurate than manual entry for packaged foods. Home-cooked meals are harder to estimate accurately regardless of the app.