# Fastology vs Fasting Well

The clearest difference is monetization model: Fastology at free against Fasting Well's freemium. Fastology also leads on update cadence (every 3 weeks vs every 3 months) and ratings volume (10 vs 2). On price, rating, review sentiment 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.

On the App Store both sit at effectively the same score — 4.9 for Fastology against 5.0 for Fasting Well. That said, the two scores are not equally well evidenced: Fastology has 10 ratings behind it against 2, 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 every 3 weeks, Fasting Well every 3 months. The most recent releases landed on September 26, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Fastology | Fasting Well |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (10 ratings)](https://appshunter.io/ios/app/fastology-fasting-tracker/id6761324779/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fasting-well-if-timer/id6772277372/reviews)** |
| Number of ratings | **10** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | **Free** | Freemium |
| Size | 40 MB | 45 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SmallScale Works LLC](https://appshunter.io/developer/1888909483) | [Generalizable](https://appshunter.io/developer/1847351234) |

## 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


### Fasting Well

[App page](https://appshunter.io/ios/app/fasting-well-if-timer/id6772277372)

Track your intermittent fasting journey with science-backed insights. Monitor your progress through different metabolic stages and view your history with a visual heatmap. Offers built-in plans and detailed scientific articles.

**Highlights:** Stage-aware fasting progress visualization, Live timer with customizable ring, Six built-in fasting plans, Journal and weekly progress charts, Science-backed articles on fasting, Calendar heatmap of activity, Privacy-first, on-device data storage

**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 Fasting Well free?

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

### Which has better reviews, Fastology or Fasting Well?

Fasting Well is rated higher. Fastology averages 4.9 out of 5 from 10 ratings, while Fasting Well averages 5.0 from 2 ratings.

### Do Fastology or Fasting Well have ads?

Neither Fastology nor Fasting Well shows ads.

### Which is updated more often, Fastology or Fasting Well?

Fastology ships an update every 3 weeks, and Fasting Well every 3 months. Most recently, Fastology was updated on September 26, 2026 and Fasting Well on September 10, 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.*