# Cal Smart vs Diet AI

The clearest difference is review sentiment: Cal Smart at 100% against Diet AI's 0%. Cal Smart also leads on rating (5.0 vs 4.7). Diet AI's advantage is ratings volume (458 vs 4) and update cadence (every 6 days vs monthly). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Cal Smart sells 3 in-app purchases, starting at $1.99 per 7 days and Diet AI sells 3 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Cal Smart holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Diet AI has 458 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Cal Smart's written reviews are positive against 0% of Diet AI's.

Cal Smart ships an update monthly, Diet AI every 6 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | Cal Smart | Diet AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/cal-smart/id6737219020/reviews)** | [4.7 (458 ratings)](https://appshunter.io/ios/app/diet-ai-calorie-tracker/id6737910632/reviews) |
| Number of ratings | 4 | **458** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | Freemium | Freemium |
| Size | 135 MB | 119 MB |
| Requires iOS | **15.5** | 16.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jienan Yao](https://appshunter.io/developer/994410104) | [LUMINATION AI](https://appshunter.io/developer/1738154889) |

## What reviewers say

### Cal Smart

[App page](https://appshunter.io/ios/app/cal-smart/id6737219020)

Instantly analyze meals by taking a photo to get calorie and macronutrient breakdowns. Receive personalized health advice and track workouts for a holistic approach to wellness. View weekly reports to monitor progress and make informed dietary choices.

**Highlights:** Photo-based nutrient recognition, Personalized health advice, Integrated workout tracking, Weekly health reports, Simple and intuitive interface, Comprehensive health tracking

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cal Smart Membership | $1.99 | per 7 days |
| Cal Smart Membership | $6.99 | per month |
| Cal Smart Membership | $24.99 | per year |


### Diet AI

[App page](https://appshunter.io/ios/app/diet-ai-calorie-tracker/id6737910632)

This app acts as a personalized diet and nutrition assistant. It creates custom diet plans based on lifestyle questions, analyzes meals from photos for nutritional information, and offers a calorie and macro tracker. Users can discover recipes and meal plans tailored to their fitness goals.

**Highlights:** Personalized diet plan creation, AI-powered meal analysis from photos, Calorie and macro tracking, Customized meal plans and recipes, Food search and scanning, Nutritional information insights

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diet AI Pro | $7.99 | per 7 days |
| Diet AI Pro | $14.99 | per month |
| Diet AI Pro | $69.99 | per year |


## Frequently asked questions

### Is Cal Smart free?

Cal Smart is free to download, with in-app purchases available.

### Is Diet AI free?

Diet AI is free to download, with in-app purchases available.

### Which has better reviews, Cal Smart or Diet AI?

Cal Smart is rated higher. Cal Smart averages 5.0 out of 5 from 4 ratings, while Diet AI averages 4.7 from 458 ratings.

### Do Cal Smart or Diet AI have ads?

Neither Cal Smart nor Diet AI shows ads.

### Which is updated more often, Cal Smart or Diet AI?

Cal Smart ships an update monthly, and Diet AI every 6 days. Most recently, Cal Smart was updated on October 30, 2026 and Diet AI on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*