# MetricSync vs Fasting Tracker

The clearest difference is rating: Fasting Tracker at 4.9 against MetricSync's 4.0. Fasting Tracker also leads on in-app purchases (none vs 2) and review sentiment (100% vs 75%). MetricSync's advantage is update cadence (every 5 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MetricSync sells 2 in-app purchases, starting at $7.99 per month. Fasting Tracker asks for nothing beyond the download.

Fasting Tracker holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 4 and 15 respectively. Written reviews point the same way: 75% of MetricSync's written reviews are positive against 100% of Fasting Tracker's.

MetricSync ships an update every 5 days, Fasting Tracker every 3 weeks. Both last shipped on November 5, 2026.

## The numbers

| Metric | MetricSync | Fasting Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/metricsync-nutrition-tracker/id6746950963/reviews) | **[4.9 (15 ratings)](https://appshunter.io/ios/app/fasting-tracker-fastology/id6761324779/reviews)** |
| Number of ratings | 4 | **15** |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 123 MB | 40 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Aura Technologies LLC (U.S.)](https://appshunter.io/developer/1819107796) | [SmallScale Works LLC](https://appshunter.io/developer/1888909483) |

## What reviewers say

### MetricSync

[App page](https://appshunter.io/ios/app/metricsync-nutrition-tracker/id6746950963)

Effortlessly track your nutrition with AI-powered food recognition. Simply snap a photo of your meal to get instant calorie and macro breakdowns. Ideal for fitness enthusiasts, those managing diabetes, or anyone aiming for a healthier diet.

**Highlights:** AI food scanning with photo recognition, Multiple logging options (photo, barcode, voice, manual), AI assistant for personalized nutrition advice, Diabetic tools (insulin calculator, glucose tracking), Apple Health integration, Fitness and progress tracking, Visual progress rings and streaks

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MetricSync Monthly | $7.99 | per month |
| MetricSync Yearly | $30.00 | per year |


### Fasting Tracker

[App page](https://appshunter.io/ios/app/fasting-tracker-fastology/id6761324779)

This app provides structured tracking for intermittent fasting, going beyond simple timers. It helps users follow specific fasting schedules with clear phase progress, build consistency through streaks, and manage a flexible weekly plan. Focuses on discipline and reducing guesswork for a clearer fasting experience.

**Highlights:** Track various fast types (16:8, OMAD, extended), Live phase-by-phase progress tracking, Build streaks from completed fasts, Flexible weekly fasting schedule, Review fasting history, Ask fasting questions with reviewed answers, Siri and Shortcuts integration

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MetricSync free?

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

### Is Fasting Tracker free?

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

### Which has better reviews, MetricSync or Fasting Tracker?

Fasting Tracker is rated higher. MetricSync averages 4.0 out of 5 from 4 ratings, while Fasting Tracker averages 4.9 from 15 ratings.

### Do MetricSync or Fasting Tracker have ads?

Neither MetricSync nor Fasting Tracker shows ads.

### Which is updated more often, MetricSync or Fasting Tracker?

MetricSync ships an update every 5 days, and Fasting Tracker every 3 weeks. Most recently, MetricSync was updated on November 5, 2026 and Fasting Tracker on November 5, 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.*