# Fast Slow vs Fasting Tracker

The clearest difference is monetization model: Fast Slow at free against Fasting Tracker's free with in-app purchases. Fasting Tracker's advantage is iOS requirement (15.1 vs 18.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Fast Slow sells 4 in-app purchases, starting at $1.99 per 7 days and Fasting Tracker sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Fast Slow against 4.9 for Fasting Tracker. Both are backed by a comparable volume of ratings — 39 and 60 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Fast Slow | Fasting Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (39 ratings)](https://appshunter.io/ios/app/fast-slow-fasting-tracker/id6749188352/reviews)** | [4.9 (60 ratings)](https://appshunter.io/ios/app/fasting-tracker-freedom-fast/id6761208711/reviews) |
| Number of ratings | 39 | **60** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 23 MB | 37 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zan Cerne](https://appshunter.io/developer/1747198932) | [Josef Reuben Encinares](https://appshunter.io/developer/1888274508) |

## What reviewers say

### Fast Slow

[App page](https://appshunter.io/ios/app/fast-slow-fasting-tracker/id6749188352)

Understand your body's metabolic changes during fasting with a visual timeline. This free app guides you through different fasting zones, from digestion to deep ketosis, and offers customizable schedules and smart notifications. It provides stats, streaks, and widgets for easy progress tracking.

**Highlights:** Fasting timer with visual timeline, 6 customizable fasting schedules, 5 distinct fasting zones explained, Smart notifications for fasting windows, Stats, streaks, and trends tracking, Home and Lock Screen widgets, Siri Shortcuts integration

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Legacy | $1.99 | per 7 days |
| Legacy - Yearly | $12.99 | per year |
| Buy Me a Coffee | $2.99 | one-time |
| You're Amazing | $9.99 | one-time |


### Fasting Tracker

[App page](https://appshunter.io/ios/app/fasting-tracker-freedom-fast/id6761208711)

Easily track your fasting periods with a simple, one-tap interface. Monitor your progress through different fasting stages in real-time and receive notifications upon completion. Visualize your consistency with a progress calendar and track your health stats and streaks.

**Highlights:** One-tap fasting start, Real-time fasting stage tracking, Multiple fasting protocols, Progress calendar, Health stats and streak tracking, Dark and light mode

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A Kind Nudge | $0.99 | one-time |
| Buy Me A Cofee | $1.99 | one-time |
| A Generous Gift | $2.99 | one-time |
| Buy Me a Meal | $4.99 | one-time |
| You're Amazing | $9.99 | one-time |
| Full Supporter | $19.99 | one-time |


## Frequently asked questions

### Is Fast Slow free?

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

### Is Fasting Tracker free?

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

### Which has better reviews, Fast Slow or Fasting Tracker?

Fast Slow is rated higher. Fast Slow averages 5.0 out of 5 from 39 ratings, while Fasting Tracker averages 4.9 from 60 ratings.

### Do Fast Slow or Fasting Tracker have ads?

Neither Fast Slow nor Fasting Tracker shows ads.

### Which is updated more often, Fast Slow or Fasting Tracker?

Fast Slow ships an update every 2 weeks, and Fasting Tracker every 2 weeks. Most recently, Fast Slow was updated on October 24, 2026 and Fasting Tracker 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.*