kitio.aiPassio vs Rex.fit
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Passio starts at See pricing page and Rex.fit starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Photo food logging
- Voice logging
- Barcode scanning
- Nutrition database
- Meal plan generation
- Meal logging from photos
- WhatsApp coach
- Workout suggestions
- Nutrition tracking API
- Free meal plan
| Feature | Passio | Rex.fit |
|---|---|---|
| Best for | Nutrition-AI SDK and API for food logging in health apps | AI calorie tracking from a WhatsApp chat or a wearable |
| Category | Legal, finance & HR | Legal, finance & HR |
| Pricing model | Paid | Freemium |
| Starting price | See pricing page | See pricing page |
| Free plan | No | Yes |
| Made by | Passio | Re.fit |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Passio starts at See pricing page and Rex.fit starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Passio
- Handles photo, voice and barcode input
- Built for healthcare platforms
- Includes a meal planner product
- Developer-focused, not a consumer tracker
- SDK pricing is not listed on the homepage
- Token-based usage to learn
Rex.fit
- Logging happens inside WhatsApp
- No manual calorie entry
- API for fitness businesses
- Wearable is only available to pre-order
- Pricing not published
- Accuracy of photo estimates is unproven
Which one should you choose?
Choose Passio if you want:
- Handles photo, voice and barcode input
- Built for healthcare platforms
- Includes a meal planner product
Watch out: developer-focused, not a consumer tracker.
Choose Rex.fit if you want:
- Logging happens inside WhatsApp
- No manual calorie entry
- API for fitness businesses
Watch out: wearable is only available to pre-order.
Passio vs Rex.fit FAQ
What is the difference between Passio and Rex.fit?
Passio: Nutrition-AI SDK and API for food logging in health apps. Rex.fit: AI calorie tracking from a WhatsApp chat or a wearable. Both are legal, finance & hr tools.
Is Passio or Rex.fit cheaper?
Passio starts at See pricing page and Rex.fit starts at See pricing page. Check both pricing pages for current plans.
Do Passio and Rex.fit have free plans?
Passio: No. Rex.fit: Yes.
Who makes Passio?
Passio is made by Passio.
Who makes Rex.fit?
Rex.fit is made by Re.fit.
Which should I choose, Passio or Rex.fit?
Choose Passio if you value handles photo, voice and barcode input and built for healthcare platforms. Choose Rex.fit if you value logging happens inside whatsapp and no manual calorie entry.