# Cairnshill IPS vs Primary365

The clearest difference is update cadence: Primary365 at every 6 weeks against Cairnshill IPS's every 4 months. Cairnshill IPS's advantage is iOS requirement (12.0 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.

Cairnshill IPS ships an update every 4 months, Primary365 every 6 weeks. The most recent releases landed on November 3, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Cairnshill IPS | Primary365 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Size | 64 MB | 24 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BUSINESS SYSTEM SOLUTIONS (N.I.) LTD](https://appshunter.io/developer/549288322) | [Edtap Ltd](https://appshunter.io/developer/1812257583) |

## What reviewers say

### Cairnshill IPS

[App page](https://appshunter.io/ios/app/cairnshill-ips/id1499911441)

**Features:** macOS Compatibility

**In-app purchases:** none


### Primary365

[App page](https://appshunter.io/ios/app/primary365/id1504313155)

**In-app purchases:** none


## Frequently asked questions

### Is Cairnshill IPS free?

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

### Is Primary365 free?

Primary365 is free to download, with no in-app purchases.

### Do Cairnshill IPS or Primary365 have ads?

Neither Cairnshill IPS nor Primary365 shows ads.

### Which is updated more often, Cairnshill IPS or Primary365?

Cairnshill IPS ships an update every 4 months, and Primary365 every 6 weeks. Most recently, Cairnshill IPS was updated on November 3, 2026 and Primary365 on October 3, 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.*