# TraumaConnect by Cairnmillar vs Grid

TraumaConnect by Cairnmillar and Grid are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

TraumaConnect by Cairnmillar ships an update every 4 weeks, Grid every 3 weeks. The most recent releases landed on October 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TraumaConnect by Cairnmillar | Grid |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Size | 101 MB | 122 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Cairnmillar Institute](https://appshunter.io/developer/1794666275) | [National Grid plc](https://appshunter.io/developer/526723083) |

## What reviewers say

### TraumaConnect by Cairnmillar

[App page](https://appshunter.io/ios/app/traumaconnect-by-cairnmillar/id6741550983)

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

**In-app purchases:** none


### Grid

[App page](https://appshunter.io/ios/app/gridengage/id6758222688)

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

**In-app purchases:** none


## Frequently asked questions

### Is TraumaConnect by Cairnmillar free?

TraumaConnect by Cairnmillar is free to download, with no in-app purchases.

### Is Grid free?

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

### Do TraumaConnect by Cairnmillar or Grid have ads?

Neither TraumaConnect by Cairnmillar nor Grid shows ads.

### Which is updated more often, TraumaConnect by Cairnmillar or Grid?

TraumaConnect by Cairnmillar ships an update every 4 weeks, and Grid every 3 weeks. Most recently, TraumaConnect by Cairnmillar was updated on October 8, 2026 and Grid on October 31, 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.*