- MyFitnessPal is the leading calorie-counting app with a 14M+ food database — best for people who want precise macro tracking.
- MyWhy is a behavioral companion app with no calorie counting — best for GLP-1 users and people who've struggled with food-logging fatigue.
- MyFitnessPal locks barcode scanning, meal scan, and custom macros behind a $19.99/mo paywall. MyWhy's core features are all free.
- MyFitnessPal has zero GLP-1 treatment tracking. MyWhy includes injection logging, drug-level visualization, and treatment timeline — free.
- If you want data-driven calorie control, MyFitnessPal is the better tool. If you want sustainable habit building alongside GLP-1 medication, MyWhy was built for that.
MyWhy and MyFitnessPal are both weight-loss apps, but they solve different problems for different people. MyFitnessPal is the industry standard for calorie counting — a detailed food diary with a database of over 14 million items, barcode scanning, and macro tracking. MyWhy takes the opposite approach: no calorie counting at all. Instead, it uses photo-based meal check-ins, GLP-1 treatment tracking, and daily reflections to build behavioral awareness.
This isn't a case of one being "better" than the other. It's about which approach fits your life, your goals, and how you relate to food.
Feature-by-Feature Comparison
| Feature | MyWhy | MyFitnessPal Free | MyFitnessPal Premium |
|---|---|---|---|
| Price | Free | Free (with ads) | $19.99/mo |
| Meal tracking approach | Photo + supportive/unsupportive | Calorie & macro logging | Calorie & macro logging |
| Food database | Not needed (behavioral) | 14M+ items | 14M+ items (verified) |
| Barcode scanning | Not needed | Not included | Premium only |
| Meal photo scan (AI) | N/A | Not included | Premium only |
| Custom macro targets | N/A | Not included | Premium only |
| GLP-1 injection tracking | Free | None | None |
| Drug-level visualization | Free | None | None |
| Treatment cycle timeline | Free | None | None |
| Weight tracking | Free | Free | Free |
| Daily reflections | Free | None | None |
| Personal "Why" motivation | Free | None | None |
| Ad-free experience | Free | Ads shown | Premium only |
| Platforms | iOS + Android | iOS + Android + Web | iOS + Android + Web |
The Key Difference: Philosophy
MyFitnessPal believes that weight loss is a math problem. Track your calories in, track your calories out, and the deficit produces results. This approach works well for people who are motivated by data, comfortable with detailed logging, and want precise control over their macronutrient intake.
MyWhy believes that weight loss is a behavioral problem. It's not that people don't know how to eat well — it's that they don't consistently eat well. Rather than giving you more data, MyWhy focuses on building the daily habit of paying attention to your meals, tracking your treatment, and staying connected to your motivation.
Neither philosophy is wrong. But they attract different people — and work better in different situations.
Who Should Choose MyFitnessPal?
MyFitnessPal
Free / $19.99/mo PremiumMyFitnessPal is the right choice if you want detailed nutritional data and are willing to invest the time to log accurately. It has the largest food database in the industry, integrates with dozens of fitness trackers and devices, and gives you granular control over calories and macros.
Strengths
- 14M+ food database — nearly everything is searchable
- Precise calorie and macro tracking
- Huge community and ecosystem
- Web app available (not just mobile)
- Integrates with Garmin, Apple Watch, Fitbit, etc.
Limitations
- Key features paywalled at $19.99/mo
- Zero GLP-1 treatment tracking
- High daily time investment (15-30 min)
- Ads in free version
- Can trigger obsessive calorie monitoring
- Most users quit within 2 weeks
Best for: Athletes tracking macros, bodybuilders during cuts, people who enjoy data and don't mind the daily time commitment, users not taking GLP-1 medications.
Who Should Choose MyWhy?
MyWhy
FreeMyWhy is the right choice if you're on a GLP-1 medication, if you've burned out on calorie counting, or if you want a lightweight daily practice that keeps you connected to your goals without overwhelming you with data.
Strengths
- All core features free — no paywall
- Full GLP-1 treatment tracking with drug-level viz
- 30-second meal check-ins (photo-based)
- Daily reflections and motivation anchoring
- No ads in free version
- Built specifically for behavioral weight management
Limitations
- No calorie or macro tracking
- No food database or barcode scanner
- Smaller community (newer app)
- No web app (mobile only)
- No fitness device integrations yet
Best for: GLP-1 medication users, people tired of calorie counting, anyone who's quit food-logging apps before, people who want treatment tracking alongside meal awareness.
What About GLP-1 Users Specifically?
This is where the comparison tilts sharply. If you're taking Ozempic, Wegovy, Mounjaro, or any other GLP-1 medication, MyFitnessPal simply wasn't built for you.
MyFitnessPal has no injection tracking, no drug-level visualization, no treatment timeline, and no dose escalation tracking. It can't show you where you are in your injection cycle or help you understand why you feel different on day 2 vs. day 6. You'd need a separate app (or a spreadsheet) for all of that.
MyWhy was built specifically for this use case. It combines everything a GLP-1 user needs in one place: treatment tracking, behavioral meal check-ins, weight trends, and daily reflections. And the features that some GLP-1 apps charge $8-15/month for — like drug-level visualization — are free in MyWhy.
For a deeper look at what GLP-1 companion apps do and why they matter, see our complete guide to GLP-1 companion apps.
Can You Use Both?
Yes — and some people do. If you want MyFitnessPal's calorie data alongside MyWhy's treatment tracking and behavioral check-ins, there's nothing stopping you from running both. MyFitnessPal handles the nutritional math. MyWhy handles the GLP-1 tracking and the "why."
That said, most people find that one approach or the other resonates more. If you've tried calorie counting and it stuck, keep going with MyFitnessPal. If you've tried it and burned out — or if you're on GLP-1 medication and need treatment tracking — give MyWhy a try.
The Verdict
MyFitnessPal and MyWhy serve different needs. MyFitnessPal is the best calorie-counting app available — its food database and macro tracking are unmatched. But it costs up to $19.99/month for key features and has nothing for GLP-1 users.
MyWhy is built for the GLP-1 era. It gives you treatment tracking, drug-level visualization, behavioral meal check-ins, and daily reflections — all free. If you're on GLP-1 medication or want a weight-loss approach that doesn't revolve around calorie math, MyWhy is the better fit.
The best app is the one you'll actually use. For most GLP-1 users, that's MyWhy.