# m/z vs Lab Rec

The clearest difference is update cadence: Lab Rec at every 2 days against m/z's every 5 weeks. m/z's advantage is iOS requirement (6.0 vs 11.0). 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.

m/z ships an update every 5 weeks, Lab Rec every 2 days. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | m/z | Lab Rec |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (5 ratings)](https://appshunter.io/ios/app/mz/id1117272212/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 3.6 GB | 31 MB |
| Requires iOS | **6.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kirill Blinov](https://appshunter.io/developer/630833420) | [TaeJin Kang](https://appshunter.io/developer/1551572558) |

## What reviewers say

### m/z

[App page](https://appshunter.io/ios/app/mz/id1117272212)

Instantly search a vast database of chemical structures based on their exact mass. This tool helps identify compounds with masses under 340 Da, drawing from millions of entries.

**Highlights:** Find chemical structures by exact mass, Search database of known structures, Database includes over 35 million compounds, Supports masses under 340 Da, Utilizes PubChem compounds database

**Features:** macOS Compatibility

**In-app purchases:** none


### Lab Rec

[App page](https://appshunter.io/ios/app/lab-rec-easy-experiment-app/id6448777919)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is m/z free?

m/z is free to download, with no in-app purchases.

### Is Lab Rec free?

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

### Do m/z or Lab Rec have ads?

Neither m/z nor Lab Rec shows ads.

### Which is updated more often, m/z or Lab Rec?

m/z ships an update every 5 weeks, and Lab Rec every 2 days. Most recently, m/z was updated on October 24, 2026 and Lab Rec on October 5, 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.*