# Periodic vs Chemical Elements Learning

The clearest difference is update cadence: Periodic at every 5 weeks against Chemical Elements Learning's every 3 months. 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.

Periodic ships an update every 5 weeks, Chemical Elements Learning every 3 months. The most recent releases landed on May 16, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Periodic | Chemical Elements Learning |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/chemical-elements-learning/id1671402037/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | — | Ad-supported |
| Size | 35 MB | 14 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [Ryouhei Azuma](https://appshunter.io/developer/1353297781) |

## What reviewers say

### Periodic

[App page](https://appshunter.io/ios/app/periodic-table-elements/id1628647298)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chemical Elements Learning

[App page](https://appshunter.io/ios/app/chemical-elements-learning/id1671402037)

Learn chemical element symbols and atomic numbers with interactive quizzes. Customize quiz settings for effective memorization. Ideal for science and chemistry test preparation.

**Highlights:** List of elements 1-118, Element symbol quiz, Customizable quiz settings, Memorization aid, Test preparation tool

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

**In-app purchases:** none


## Frequently asked questions

### Is Periodic free?

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

### Is Chemical Elements Learning free?

Chemical Elements Learning is free to download, with no in-app purchases.

### Do Periodic or Chemical Elements Learning have ads?

Both Periodic and Chemical Elements Learning show ads.

### Which is updated more often, Periodic or Chemical Elements Learning?

Periodic ships an update every 5 weeks, and Chemical Elements Learning every 3 months. Most recently, Periodic was updated on May 16, 2026 and Chemical Elements Learning on September 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.*