# O'lin vs Fasting Timer

The clearest difference is in-app purchases: Fasting Timer at none against O'lin's 1. Fasting Timer also leads on iOS requirement (17.0 vs 26.0). O'lin's advantage is update cadence (monthly vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. O'lin sells 1 one-off in-app purchase. Fasting Timer asks for nothing beyond the download.

O'lin ships an update monthly, Fasting Timer every 4 months. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | O'lin | Fasting Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/fasting-timer-nova-fast/id6761011600/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | — | Free |
| Size | 3 MB | 10 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eduard Novohatsky](https://appshunter.io/developer/1814905516) | [Jakub Laszczyk](https://appshunter.io/developer/568719342) |

## What reviewers say

### O'lin

[App page](https://appshunter.io/ios/app/olin-intermittent-fasting/id6758303258)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| O’lin Lifetime | $19.99 | one-time |


### Fasting Timer

[App page](https://appshunter.io/ios/app/fasting-timer-nova-fast/id6761011600)

This app tracks intermittent fasting, visualizing your body's biological phases and progress. It offers customizable timers, water tracking, a journal, and gamified elements to motivate users. Monitor body measurements and weight to see your transformation.

**Highlights:** Biological phase tracking, Customizable fasting timers, Home screen widgets, Body measurements and weight tracking, Water tracking with reminders, Fasting journal, Gamified progress with XP and badges

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

**In-app purchases:** none


## Frequently asked questions

### Is O'lin free?

O'lin is free to download, with in-app purchases available.

### Is Fasting Timer free?

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

### Do O'lin or Fasting Timer have ads?

Neither O'lin nor Fasting Timer shows ads.

### Which is updated more often, O'lin or Fasting Timer?

O'lin ships an update monthly, and Fasting Timer every 4 months. Most recently, O'lin was updated on November 9, 2026 and Fasting Timer on October 31, 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.*