# Fastology vs Intermittent

The clearest difference is rating: Intermittent at 5.0 against Fastology's 4.8. Intermittent also leads on ratings volume (32 vs 5) and iOS requirement (13.0 vs 17.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Intermittent holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Intermittent has 32 ratings behind it against 5, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Fastology ships an update fortnightly, Intermittent every 8 days. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Fastology | Intermittent |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (5 ratings)](https://appshunter.io/ios/app/fastology-fasting-tracker/id6761324779/reviews) | **[5.0 (32 ratings)](https://appshunter.io/ios/app/intermittent-fasting-tracker/id6767781311/reviews)** |
| Number of ratings | 5 | **32** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 8 days** |
| Monetization | Free | Free |
| Size | 40 MB | 39 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [SmallScale Works LLC](https://appshunter.io/developer/1888909483) | [Rohit Kumar](https://appshunter.io/developer/1896508140) |

## What reviewers say

### Fastology

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


### Intermittent

[App page](https://appshunter.io/ios/app/intermittent-fasting-tracker/id6767781311)

This app tracks your fasting progress by showing real-time biological phases like ketosis and autophagy. It provides science-backed explanations for each stage and supports various fasting protocols without requiring an account or subscription.

**Highlights:** Real-time biological phase tracking (Fed, Lipolysis, Ketosis, Autophagy), Support for multiple fasting protocols (12:12 to 72-hour fasts), Free science library with cited primary sources, Adaptive hydration target, Weight and progress tracking with trend analysis, Private sharing circle with applause-only responses, Home screen widget and cross-device sync

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

**In-app purchases:** none


## Frequently asked questions

### Is Fastology free?

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

### Is Intermittent free?

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

### Which has better reviews, Fastology or Intermittent?

Intermittent is rated higher. Fastology averages 4.8 out of 5 from 5 ratings, while Intermittent averages 5.0 from 32 ratings.

### Do Fastology or Intermittent have ads?

Neither Fastology nor Intermittent shows ads.

### Which is updated more often, Fastology or Intermittent?

Fastology ships an update fortnightly, and Intermittent every 8 days. Most recently, Fastology was updated on September 9, 2026 and Intermittent on September 22, 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.*