# Fasting Well vs Ayuno

The clearest difference is in-app purchases: Fasting Well at none against Ayuno's 2. Fasting Well also leads on iOS requirement (17.0 vs 26.0). Ayuno's advantage is update cadence (every 4 days vs every 3 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Ayuno sells 2 in-app purchases, starting at $3.99 per month. Fasting Well asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Fasting Well against 5.0 for Ayuno. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Fasting Well ships an update every 3 months, Ayuno every 4 days. The most recent releases landed on October 13, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Fasting Well | Ayuno |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/fasting-well-if-timer/id6772277372/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/ayuno-intermittent-fasting/id6787856522/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Freemium | Freemium |
| Size | 45 MB | 4 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Generalizable](https://appshunter.io/developer/1847351234) | [Brandon Duncan](https://appshunter.io/developer/1858118962) |

## What reviewers say

### 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


### Ayuno

[App page](https://appshunter.io/ios/app/ayuno-intermittent-fasting/id6787856522)

This app helps users build consistent intermittent fasting habits with a simple timer, health guidance, and progress tracking. It offers premium features like journaling, detailed insights, and personalized coaching.

**Highlights:** Simple fasting timer, Health-conscious guidance, Journaling (Premium), Progress logging (Premium), Meaningful insights (Premium), Apple Health integration, Live Activities & Widgets (Premium)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $3.99 | per month |
| Premium Annual | $39.99 | per year |


## Frequently asked questions

### Is Fasting Well free?

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

### Is Ayuno free?

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

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

Fasting Well and Ayuno are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Fasting Well or Ayuno have ads?

Neither Fasting Well nor Ayuno shows ads.

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

Fasting Well ships an update every 3 months, and Ayuno every 4 days. Most recently, Fasting Well was updated on October 13, 2026 and Ayuno on October 21, 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.*