# OS1 vs CCMS

The clearest difference is update cadence: CCMS at every 11 days against OS1's every 8 months. OS1's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OS1 ships an update every 8 months, CCMS every 11 days. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | OS1 | CCMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 11 days** |
| Size | 62 MB | 181 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Pegasus Building Services Company, Inc](https://appshunter.io/developer/1565512037) | [Prime Consultants And Management Services](https://appshunter.io/developer/1669407402) |

## What reviewers say

### OS1

[App page](https://appshunter.io/ios/app/os1/id6450308066)

**Features:** macOS Compatibility

**In-app purchases:** none


### CCMS

[App page](https://appshunter.io/ios/app/ccms-accruon/id6477782009)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OS1 free?

OS1 is free to download, with no in-app purchases.

### Is CCMS free?

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

### Do OS1 or CCMS have ads?

Neither OS1 nor CCMS shows ads.

### Which is updated more often, OS1 or CCMS?

OS1 ships an update every 8 months, and CCMS every 11 days. Most recently, OS1 was updated on October 18, 2026 and CCMS on October 12, 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.*