# OOH vs Particle Cam

The clearest difference is in-app purchases: OOH at none against Particle Cam's 2. OOH also leads on iOS requirement (11.0 vs 16.0). Particle Cam's advantage is update cadence (weekly vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. Particle Cam sells 2 in-app purchases, starting at $1.99 per month. OOH asks for nothing beyond the download.

OOH ships an update fortnightly, Particle Cam weekly. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | OOH | Particle Cam |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 15 MB | 3 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [家回 罗](https://appshunter.io/developer/1478554929) | [Tianjin Dian Jiang Technology Co.,LTD](https://appshunter.io/developer/1196087712) |

## What reviewers say

### OOH

[App page](https://appshunter.io/ios/app/ooh/id1625549221)

**Features:** macOS Compatibility

**In-app purchases:** none


### Particle Cam

[App page](https://appshunter.io/ios/app/particle-cam/id6448227339)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $9.99 | per year |


## Frequently asked questions

### Is OOH free?

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

### Is Particle Cam free?

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

### Do OOH or Particle Cam have ads?

Neither OOH nor Particle Cam shows ads.

### Which is updated more often, OOH or Particle Cam?

OOH ships an update fortnightly, and Particle Cam weekly. Most recently, OOH was updated on October 17, 2026 and Particle Cam on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*