# Periodic vs Chemical Elements Quiz & Study

The clearest difference is price: Chemical Elements Quiz & Study at Free against Periodic's $1.99. Chemical Elements Quiz & Study also leads on iOS requirement (13.0 vs 15.1). Periodic's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Chemical Elements Quiz & Study is free to download; Periodic costs $1.99 up front. Chemical Elements Quiz & Study sells 1 one-off in-app purchase. Periodic asks for nothing beyond the download.

Periodic ships an update every 5 weeks, Chemical Elements Quiz & Study every 3 months. The most recent releases landed on August 16, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Periodic | Chemical Elements Quiz & Study |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Size | 31 MB | 17 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [Abdulkarim Nasir](https://appshunter.io/developer/1463436050) |

## What reviewers say

### Periodic

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

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

**In-app purchases:** none


### Chemical Elements Quiz & Study

[App page](https://appshunter.io/ios/app/chemical-elements-quiz-and-study/id6472821385)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Periodic free?

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

### Is Chemical Elements Quiz & Study free?

Chemical Elements Quiz & Study is free to download, with in-app purchases available.

### Do Periodic or Chemical Elements Quiz & Study have ads?

Chemical Elements Quiz & Study shows ads; Periodic does not.

### Which is updated more often, Periodic or Chemical Elements Quiz & Study?

Periodic ships an update every 5 weeks, and Chemical Elements Quiz & Study every 3 months. Most recently, Periodic was updated on August 16, 2026 and Chemical Elements Quiz & Study on September 7, 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.*