# Simple Calorie Tracker vs Fitsin

The clearest difference is in-app purchases: Fitsin at none against Simple Calorie Tracker's 2. Fitsin also leads on iOS requirement (15.0 vs 18.0). Simple Calorie Tracker's advantage is ads (none vs shown) and update cadence (every 2 days vs weekly). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Simple Calorie Tracker sells 2 in-app purchases, starting at $9.99 per month. Fitsin asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Simple Calorie Tracker against 5.0 for Fitsin. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Simple Calorie Tracker ships an update every 2 days, Fitsin weekly. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Simple Calorie Tracker | Fitsin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/simple-calorie-tracker-calvin/id6790968217/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/fitsin/id6814602580/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Freemium | **Ad-supported** |
| Size | 18 MB | 28 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Kevin Miguel Estrada Garcia](https://appshunter.io/developer/6790968219) | [ABDULHAKEIM Sultan](https://appshunter.io/developer/6814602582) |

## What reviewers say

### Simple Calorie Tracker

[App page](https://appshunter.io/ios/app/simple-calorie-tracker-calvin/id6790968217)

This app uses AI to help you track your calorie and macro intake. It offers features like barcode scanning, food search, and weight tracking. It also syncs with health platforms and provides personalized insights based on your data.

**Highlights:** AI meal photo scan, Barcode scanning, Food database search, Manual macro logging, Weight tracking with trend line, Apple Health & Google Health sync, Home and Lock Screen widgets

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calvin Plus | $9.99 | per month |
| Calvin Plus Annual | $49.99 | per year |


### Fitsin

[App page](https://appshunter.io/ios/app/fitsin/id6814602580)

This app uses AI to identify Saudi and Gulf dishes from photos, providing calorie counts and nutritional information. It offers personalized coaching and community features to support users' health goals.

**Highlights:** AI-powered food recognition from photos, Calorie and nutrition data for Saudi/Gulf dishes, Personalized AI coach in Saudi Arabic, Community features for shared goals, Weight tracking and goal projection, Workout and water tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple Calorie Tracker free?

Simple Calorie Tracker is free to download, with in-app purchases available.

### Is Fitsin free?

Fitsin is free to download, with no in-app purchases.

### Which has better reviews, Simple Calorie Tracker or Fitsin?

Simple Calorie Tracker and Fitsin are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Simple Calorie Tracker or Fitsin have ads?

Fitsin shows ads; Simple Calorie Tracker does not.

### Which is updated more often, Simple Calorie Tracker or Fitsin?

Simple Calorie Tracker ships an update every 2 days, and Fitsin weekly. Most recently, Simple Calorie Tracker was updated on October 24, 2026 and Fitsin on October 31, 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.*