# Dietfit vs Lighten

The clearest difference is update cadence: Dietfit at every 3 days against Lighten's every 4 weeks. Lighten's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Dietfit sells 10 in-app purchases, starting at $6.79 per month and Lighten sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Dietfit ships an update every 3 days, Lighten every 4 weeks. The most recent releases landed on November 8, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Dietfit | Lighten |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (37 ratings)](https://appshunter.io/ios/app/dietfit-ai-calorie-tracker/id6747063701/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 448 MB | 32 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [c0x12c Inc.](https://appshunter.io/developer/1229975755) | [Cyriel de Ceuninck van Capelle](https://appshunter.io/developer/1695881179) |

## What reviewers say

### Dietfit

[App page](https://appshunter.io/ios/app/dietfit-ai-calorie-tracker/id6747063701)

This app uses AI to help you lose weight by tracking calories, managing your deficit, and building personalized diet plans. It offers features like meal scanning, an AI coach, and progress visualization to support your health journey.

**Highlights:** AI-powered calorie and nutrition tracking, Personalized diet and weight goals, Meal scanning for quick logging, AI Coach for personalized guidance, Visual food journal and progress reports, Habit-building features like streaks and challenges

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly discount | $6.79 | per month |
| Monthly | $7.99 | per month |
| Monthly | $11.99 | per month |
| Monthly | $19.99 | per month |
| Yearly | $49.99 | per year |
| Yearly | $56.99 | per year |
| Yearly Special Offer | $56.99 | per year |
| Yearly Plan | $59.99 | per year |
| Yearly | $84.99 | per year |
| Yearly | $99.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Smooth and detailed app
- 📊 Useful for weight loss and calorie tracking
- 💯 Great experience
- 🔍 Detailed itinerary


### Lighten

[App page](https://appshunter.io/ios/app/lighten/id6748280897)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 meditation sessions | $2.99 | one-time |
| 15 meditation sessions | $7.99 | one-time |
| 50 meditation sessions | $24.99 | one-time |


## Frequently asked questions

### Is Dietfit free?

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

### Is Lighten free?

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

### Do Dietfit or Lighten have ads?

Neither Dietfit nor Lighten shows ads.

### Which is updated more often, Dietfit or Lighten?

Dietfit ships an update every 3 days, and Lighten every 4 weeks. Most recently, Dietfit was updated on November 8, 2026 and Lighten on October 28, 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.*