# Open CLS vs Lab Test Values

The clearest difference is device support: Open CLS at 3 against Lab Test Values's 1. Open CLS also leads on iOS requirement (13.0 vs 16.2). On price, update cadence, ads 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.

Open CLS ships an update every 24 months, Lab Test Values every 42 months. The most recent releases landed on June 1, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | Open CLS | Lab Test Values |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (318 ratings)](https://appshunter.io/ios/app/lab-test-values/id1484865553/reviews)** |
| Number of ratings | — | **318** |
| Positive reviews | — | 14.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 24 months** | Every 42 months |
| Monetization | — | Ad-supported |
| Size | 17 MB | 9 MB |
| Requires iOS | **13.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Clinical Leadership Solutions LTD](https://appshunter.io/developer/1434082548) | [Ahmad Nakore](https://appshunter.io/developer/1467917019) |

## What reviewers say

### Open CLS

[App page](https://appshunter.io/ios/app/open-cls/id1479939378)

**In-app purchases:** none


### Lab Test Values

[App page](https://appshunter.io/ios/app/lab-test-values/id1484865553)

This app offers general information on common laboratory tests, including normal ranges for blood and other body fluid analyses. It covers a wide array of lab disciplines like hematology, biochemistry, and microbiology, serving as an educational resource for students and technicians. It explicitly states it is not for diagnostic purposes.

**Highlights:** Commonly used lab test information, Normal ranges for various tests, Covers hematology, biochemistry, hormones, and more, Includes urinalysis and fecal tests, Information on body fluid and microbiology tests

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

**In-app purchases:** none


## Frequently asked questions

### Is Open CLS free?

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

### Is Lab Test Values free?

Lab Test Values is free to download, with no in-app purchases.

### Do Open CLS or Lab Test Values have ads?

Neither Open CLS nor Lab Test Values shows ads.

### Which is updated more often, Open CLS or Lab Test Values?

Open CLS ships an update every 24 months, and Lab Test Values every 42 months. Most recently, Open CLS was updated on June 1, 2026 and Lab Test Values on August 17, 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.*