# Build CLS vs UUniReady

The clearest difference is update cadence: UUniReady at every 4 weeks against Build CLS's every 19 months. Build CLS's advantage is iOS requirement (13.0 vs 26.0). 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.

Build CLS ships an update every 19 months, UUniReady every 4 weeks. The most recent releases landed on October 18, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Build CLS | UUniReady |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 4 weeks** |
| Size | 17 MB | 40 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Clinical Leadership Solutions LTD](https://appshunter.io/developer/1434082548) | [Aurion Ltd](https://appshunter.io/developer/1577598285) |

## What reviewers say

### Build CLS

[App page](https://appshunter.io/ios/app/build-cls/id1439136458)

**In-app purchases:** none


### UUniReady

[App page](https://appshunter.io/ios/app/uuniready/id1576851992)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Build CLS free?

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

### Is UUniReady free?

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

### Do Build CLS or UUniReady have ads?

Neither Build CLS nor UUniReady shows ads.

### Which is updated more often, Build CLS or UUniReady?

Build CLS ships an update every 19 months, and UUniReady every 4 weeks. Most recently, Build CLS was updated on October 18, 2026 and UUniReady on September 21, 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.*