# Fasting Well vs Burn

The clearest difference is in-app purchases: Fasting Well at none against Burn's 4. Burn's advantage is update cadence (every 3 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Burn sells 4 in-app purchases, starting at $5.99 per month. Fasting Well asks for nothing beyond the download.

Fasting Well ships an update every 3 months, Burn every 3 days. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Fasting Well | Burn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fasting-well-if-timer/id6772277372/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 45 MB | 53 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Generalizable](https://appshunter.io/developer/1847351234) | [Waitery Inc](https://appshunter.io/developer/1597590964) |

## 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


### Burn

[App page](https://appshunter.io/ios/app/burn-ai-calorie-tracker/id6811414740)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Burn Pro Monthly | $5.99 | per month |
| Burn Pro Monthly | $9.99 | per month |
| Burn Pro Annual | $19.99 | per year |
| Burn Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is Fasting Well free?

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

### Is Burn free?

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

### Do Fasting Well or Burn have ads?

Neither Fasting Well nor Burn shows ads.

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

Fasting Well ships an update every 3 months, and Burn every 3 days. Most recently, Fasting Well was updated on October 13, 2026 and Burn on October 25, 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.*