# Chemistry lab pro vs Periodic

The clearest difference is update cadence: Periodic at every 5 weeks against Chemistry lab pro's every 21 months. Periodic also leads on price ($1.99 vs $2.99). Chemistry lab pro's advantage is iOS requirement (13.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

Chemistry lab pro costs $2.99 and Periodic $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chemistry lab pro ships an update every 21 months, Periodic every 5 weeks. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Chemistry lab pro | Periodic |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 5 weeks** |
| Size | 21 MB | 31 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anas Abubakar](https://appshunter.io/developer/1581534101) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## What reviewers say

### Chemistry lab pro

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

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

**In-app purchases:** none


### Periodic

[App page](https://appshunter.io/ios/app/periodic-table-elements-pro/id1628646759)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chemistry lab pro free?

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

### Is Periodic free?

Periodic costs $1.99, with no in-app purchases.

### Do Chemistry lab pro or Periodic have ads?

Neither Chemistry lab pro nor Periodic shows ads.

### Which is updated more often, Chemistry lab pro or Periodic?

Chemistry lab pro ships an update every 21 months, and Periodic every 5 weeks. Most recently, Chemistry lab pro was updated on October 19, 2026 and Periodic on October 11, 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.*