# Arc Journal vs Posture Patrol

The clearest difference is in-app purchases: Arc Journal at none against Posture Patrol's 2. Arc Journal also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.6). Posture Patrol's advantage is update cadence (every 3 days vs weekly). On price and device support there is nothing between them.

Both are free to download. Posture Patrol sells 2 in-app purchases, starting at $0.99 per month. Arc Journal asks for nothing beyond the download.

Arc Journal ships an update weekly, Posture Patrol every 3 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Arc Journal | Posture Patrol |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 3 days** |
| Size | 47 MB | 84 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Phillip Pham](https://appshunter.io/developer/1870045204) | [Romiick LLC](https://appshunter.io/developer/1716146475) |

## 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


### Posture Patrol

[App page](https://appshunter.io/ios/app/posture-patrol/id6761091343)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Posture Patrol Premium | $0.99 | per month |
| Buy Me a Milk | $0.99 | one-time |


## Frequently asked questions

### Is Arc Journal free?

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

### Is Posture Patrol free?

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

### Do Arc Journal or Posture Patrol have ads?

Posture Patrol shows ads; Arc Journal does not.

### Which is updated more often, Arc Journal or Posture Patrol?

Arc Journal ships an update weekly, and Posture Patrol every 3 days. Most recently, Arc Journal was updated on October 24, 2026 and Posture Patrol on October 28, 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.*