# Chemical Elements Practice vs Circular Chemistry Challenge

The clearest difference is in-app purchases: Circular Chemistry Challenge at none against Chemical Elements Practice's 1. Circular Chemistry Challenge also leads on iOS requirement (11.0 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Chemical Elements Practice sells 1 one-off in-app purchase. Circular Chemistry Challenge asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Chemical Elements Practice | Circular Chemistry Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (38 ratings)](https://appshunter.io/ios/app/chemical-elements-practice/id1581952820/reviews)** | — |
| Number of ratings | **38** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | — |
| Size | 30 MB | 60 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Philipp Straub](https://appshunter.io/developer/1573167056) | [Ilija Rushkovski](https://appshunter.io/developer/1446440969) |

## What reviewers say

### Chemical Elements Practice

[App page](https://appshunter.io/ios/app/chemical-elements-practice/id1581952820)

Master the periodic table with an adaptive learning system. This app uses spaced repetition and two distinct study modes to build long-term memory of element symbols, names, and relationships. Track your progress with category tests and access a full element browser.

**Highlights:** Adaptive spaced repetition, Multiple Choice mode, Self-Assessment mode, All 118 elements included, Category tests, Full card browser, Customizable study settings

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $3.99 | one-time |


### Circular Chemistry Challenge

[App page](https://appshunter.io/ios/app/circular-chemistry-challenge/id6737176253)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chemical Elements Practice free?

Chemical Elements Practice is free to download, with in-app purchases available.

### Is Circular Chemistry Challenge free?

Circular Chemistry Challenge is free to download, with no in-app purchases.

### Do Chemical Elements Practice or Circular Chemistry Challenge have ads?

Neither Chemical Elements Practice nor Circular Chemistry Challenge shows ads.

### Which is updated more often, Chemical Elements Practice or Circular Chemistry Challenge?

Chemical Elements Practice ships an update monthly, and Circular Chemistry Challenge monthly. Most recently, Chemical Elements Practice was updated on October 7, 2026 and Circular Chemistry Challenge on October 8, 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.*