# Arc Journal vs One Line

The clearest difference is in-app purchases: Arc Journal at none against One Line's 3. Arc Journal also leads on update cadence (weekly vs every 2 months) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. One Line sells 3 in-app purchases, starting at $0.99 per month. Arc Journal asks for nothing beyond the download.

Arc Journal ships an update weekly, One Line every 2 months. Both last shipped on November 5, 2026.

## The numbers

| Metric | Arc Journal | One Line |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Size | 47 MB | 9 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Phillip Pham](https://appshunter.io/developer/1870045204) | [ismail kirenli](https://appshunter.io/developer/1894357775) |

## What reviewers say

### Arc Journal

[App page](https://appshunter.io/ios/app/arc-journal/id6757975568)

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

**In-app purchases:** none


### One Line

[App page](https://appshunter.io/ios/app/one-line-micro-journal/id6773496465)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OneLine Pro Monthly | $0.99 | per month |
| OneLine Pro Yearly | $6.99 | per year |
| One Line Premium | $12.99 | one-time |


## Frequently asked questions

### Is Arc Journal free?

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

### Is One Line free?

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

### Do Arc Journal or One Line have ads?

Neither Arc Journal nor One Line shows ads.

### Which is updated more often, Arc Journal or One Line?

Arc Journal ships an update weekly, and One Line every 2 months. Most recently, Arc Journal was updated on November 5, 2026 and One Line on November 5, 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.*