# O'lin vs Bars

The clearest difference is in-app purchases: Bars at none against O'lin's 1. Bars also leads on iOS requirement (18.6 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

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

O'lin ships an update monthly, Bars every 2 months. The most recent releases landed on October 7, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | O'lin | Bars |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 3 MB | 4 MB |
| Requires iOS | 26.0 | **18.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Eduard Novohatsky](https://appshunter.io/developer/1814905516) | [HYPE4MOBILE MALEWICZ I WSPOLNICY SPOŁKA JAWNA](https://appshunter.io/developer/501938616) |

## 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 |


### Bars

[App page](https://appshunter.io/ios/app/bars-fasting-tracker/id6761415622)

**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 Bars free?

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

### Do O'lin or Bars have ads?

Neither O'lin nor Bars shows ads.

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

O'lin ships an update monthly, and Bars every 2 months. Most recently, O'lin was updated on October 7, 2026 and Bars on September 29, 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.*