Most weight loss apps charge $20 to $50 per month. That adds up to hundreds of dollars a year for features you might not even use. The good news is that several of the best free weight loss apps actually work well enough to get results without opening your wallet. I tested and compared seven apps that offer genuinely useful free tiers, from calorie trackers to AI coaching tools. Here is what each one does well, where it falls short, and which one fits your situation.
A quick note on what "free" means here. Some apps are completely free. Others use a freemium model where the basic version costs nothing but premium features require a subscription. I have noted the differences for each one.
1. MyFitnessPal
MyFitnessPal has been around since 2005 and remains the default calorie tracker for most people. Its food database has over 14 million entries, which means you can find almost anything by searching or scanning a barcode. The free version lets you log meals, track calories, and see basic macronutrient breakdowns.
The free tier got more limited in recent years. You used to get detailed macro tracking for free, but now that sits behind the premium paywall ($19.99/month or $79.99/year). The barcode scanner still works on free, which is the feature most people actually need.
Pros:
- Largest food database available
- Barcode scanner works on free tier
- Integrates with most fitness trackers and smart scales
Cons:
- Free version has ads everywhere
- Macro goals locked behind premium
- No coaching or guidance, just tracking
Best for: People who want a straightforward calorie counter and already know their nutrition targets.
2. Lose It!
Lose It! takes a friendlier approach to calorie tracking than MyFitnessPal. The interface is cleaner, and the free version is more generous. You get a daily calorie budget based on your goal weight, food logging with a barcode scanner, and basic progress charts without paying anything.
The Snap It feature lets you take a photo of your food and the app estimates what it is. It works reasonably well for simple meals but struggles with mixed dishes. Premium runs $39.99/year and adds meal planning, macronutrient goals, and water tracking.
Pros:
- Clean, intuitive interface
- Photo food logging on the free tier
- Cheaper premium than most competitors
Cons:
- Smaller food database than MyFitnessPal
- Photo recognition can be inaccurate
Best for: Beginners who find MyFitnessPal overwhelming and want something simpler.
3. BodyBuddy
BodyBuddy takes a different approach from traditional tracking apps. Instead of giving you a food diary and leaving you to figure things out, it works as an AI-powered coach that texts you through iMessage. You tell it what you ate, ask questions about nutrition, or check in about your progress, and it responds like a knowledgeable friend who actually remembers your goals.
The free tier includes daily check-ins, personalized meal suggestions, and accountability nudges. There is no calorie database to scroll through because the AI handles that part. You just describe what you ate in plain language. The paid plan ($8.99/month) adds deeper analytics and more frequent coaching interactions.
What I like about BodyBuddy is that it removes the friction of manual logging. Typing "I had a chicken salad and a coffee" into iMessage feels more natural than searching a database for each ingredient. The coaching aspect also helps with the behavioral side of weight loss, which pure tracking apps ignore entirely.
Pros:
- Works through iMessage, no separate app to open
- AI coaching provides actual guidance, not just data
- Natural language food logging is faster than manual entry
Cons:
- iPhone only (requires iMessage)
- Less granular data than dedicated calorie trackers
Best for: People who have tried calorie counting apps before and quit because the logging was tedious. Also great if you want coaching-style support without a monthly subscription that costs as much as a gym membership.
4. FatSecret
FatSecret is the most underrated free weight loss app. Unlike MyFitnessPal and Lose It!, which constantly push you toward premium, FatSecret gives away nearly everything for free. Calorie tracking, macro breakdowns, a food diary, exercise logging, and even a recipe library all cost nothing.
The trade-off is that the interface looks dated compared to its competitors. It functions well, but it won't win any design awards. FatSecret Premium ($6.99/month) adds meal plans and advanced reporting, but honestly the free version covers what most people need.
Pros:
- Most complete free tier of any calorie tracker
- No ads on the free version
- Community forums for support
Cons:
- Outdated interface
- Fewer device integrations than MyFitnessPal
Best for: People who want full calorie and macro tracking without paying a cent and don't care about pretty design.
5. Cronometer
Cronometer is the pick for anyone who cares about micronutrients, not just calories and protein. The free version tracks over 80 nutrients including vitamins, minerals, and amino acids. Its food database is smaller than MyFitnessPal's, but the entries are more accurate because Cronometer uses verified data sources like the USDA and NCCDB rather than user-submitted entries.
The Gold subscription ($49.99/year) adds a food timestamp feature, fasting timer, and custom charts. But the free version already provides more nutritional detail than most paid apps.
Pros:
- Tracks 80+ micronutrients for free
- Verified, accurate food data
- Popular with keto and low-carb dieters
Cons:
- Steeper learning curve
- Smaller food database means more manual entry
Best for: Nutrition nerds who want detailed micronutrient data and people following specific diets like keto or vegan.
6. Samsung Health / Apple Health
You probably already have a solid weight loss tool on your phone without realizing it. Apple Health (iPhone) and Samsung Health (Galaxy devices) both offer free food logging, step tracking, weight tracking, and workout logging. Samsung Health has a slight edge because it includes a built-in food diary with calorie counting, while Apple Health acts more as a data aggregator that pulls information from other apps.
Neither app will blow you away with features, but they cost absolutely nothing and they are already installed. Samsung Health also includes guided workout programs and challenges you can do with friends.
Pros:
- Completely free with no premium tier
- Already installed on your phone
- Integrates with wearables from the same ecosystem
Cons:
- Limited food database compared to dedicated trackers
- No coaching or behavioral support
- Apple Health requires third-party apps for food logging
Best for: People who want to track steps, weight, and basic nutrition without downloading another app.
7. Yazio
Yazio is a German-made calorie tracker that has been gaining ground in the US. The free version offers food logging, a barcode scanner, a water tracker, and intermittent fasting timers. That last feature is notable because most apps charge for fasting tools.
The app's design is modern and easy to navigate. Yazio Pro ($29.99/year) adds recipes, meal plans, and detailed nutrient tracking. The free version strikes a nice balance between simplicity and usefulness.
Pros:
- Free intermittent fasting timer
- Well-designed interface
- Affordable premium if you decide to upgrade
Cons:
- Some recipes only available in German
- Free version limits daily meal logging views
Best for: People interested in combining calorie tracking with intermittent fasting.
How to pick the best free weight loss app for you
The right app depends on what has tripped you up before. If you have tried calorie counting and found the manual logging tedious, a coaching-based app like BodyBuddy will feel like a relief. If you love data and want to track every vitamin and mineral, Cronometer is your best bet. If you just need a simple calorie counter with a big food database, MyFitnessPal or Lose It! will do the job.
My honest suggestion: try two apps for a week each. You will know within a few days which one fits your habits. The app that you actually open and use consistently is the best one, regardless of features.
Frequently asked questions
Are free weight loss apps effective?
Yes, if you use them consistently. A 2023 study in the Journal of Medical Internet Research found that people who tracked food with any app, free or paid, lost more weight than those who did not track at all. The specific app matters less than the habit of paying attention to what you eat.
What is the difference between free and paid weight loss apps?
Free tiers usually cover basic calorie tracking and food logging. Paid versions add features like detailed macro targets, meal plans, coaching, and ad-free experiences. For many people, the free versions provide enough functionality to lose weight. You can always upgrade later if you hit a wall.
Can I lose weight with just an app and no personal trainer?
Absolutely. Weight loss comes down to eating fewer calories than you burn. An app that helps you monitor your intake and stay accountable can replace the tracking role that a trainer plays. Apps with coaching features, like BodyBuddy's AI coach, can also provide the motivational support side without the personal trainer price tag.
Do I need to track calories forever?
No. Most people benefit from tracking for a few months to build awareness of portion sizes and calorie density. After that, many find they can estimate well enough to maintain their weight without logging every meal. Think of it as training wheels.
Which free weight loss app has the best food database?
MyFitnessPal has the largest database with over 14 million foods. Cronometer has a smaller but more accurate database using verified sources. If sheer volume matters to you, go with MyFitnessPal. If accuracy matters more, pick Cronometer.
The bottom line
You do not need to spend money to start losing weight with an app. Every option on this list offers a free tier that covers the basics. The key is matching the app to how you actually want to interact with it. If you like manual data entry and spreadsheets, a traditional tracker like MyFitnessPal or FatSecret will feel natural. If you would rather just text about your meals and get advice back, give BodyBuddy a try.
Whatever you pick, start today. The perfect app is the one you will actually use tomorrow too.