# KF Engineering vs Just

The clearest difference is device support: KF Engineering at 2 against Just's —. Just's advantage is iOS requirement (11.0 vs 15.1). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | KF Engineering | Just |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 5 weeks | — |
| Size | 43 MB | 60 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | **iPhone, iPod** | — |
| Age rating | 12+ | 4+ |
| Developer | [Knight Frank Chartered (Thailand) Co.,Ltd](https://appshunter.io/developer/1301897716) | [DoDreamDifference Co., Ltd.](https://appshunter.io/developer/525018031) |

## What reviewers say

### KF Engineering

[App page](https://appshunter.io/ios/app/kf-engineering/id1469770626)

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

**In-app purchases:** none


### Just

[App page](https://appshunter.io/ios/app/just-id-one/id1606884141)

**In-app purchases:** none


## Frequently asked questions

### Is KF Engineering free?

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

### Is Just free?

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

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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.*