# PE.Mech vs Chemistry lab pro

The clearest difference is update cadence: PE.Mech at every 2 months against Chemistry lab pro's every 21 months. PE.Mech also leads on price ($0.99 vs $2.99). Chemistry lab pro's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 15.0). On ads and in-app purchases there is nothing between them.

PE.Mech costs $0.99 and Chemistry lab pro $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PE.Mech ships an update every 2 months, Chemistry lab pro every 21 months. The most recent releases landed on October 16, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | PE.Mech | Chemistry lab pro |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 21 months |
| Size | 35 MB | 21 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [巍 顾](https://appshunter.io/developer/1368599824) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### PE.Mech

[App page](https://appshunter.io/ios/app/pemech/id1368599825)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chemistry lab pro

[App page](https://appshunter.io/ios/app/chemistry-lab-pro/id1622793028)

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

**In-app purchases:** none


## Frequently asked questions

### Is PE.Mech free?

PE.Mech costs $0.99, with no in-app purchases.

### Is Chemistry lab pro free?

Chemistry lab pro costs $2.99, with no in-app purchases.

### Do PE.Mech or Chemistry lab pro have ads?

Neither PE.Mech nor Chemistry lab pro shows ads.

### Which is updated more often, PE.Mech or Chemistry lab pro?

PE.Mech ships an update every 2 months, and Chemistry lab pro every 21 months. Most recently, PE.Mech was updated on October 16, 2026 and Chemistry lab pro on October 22, 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.*