# Periodic vs Elemental Rx

The clearest difference is ads: Elemental Rx at none against Periodic's shown. Elemental Rx also leads on update cadence (every 3 days vs every 5 weeks) and iOS requirement (12.0 vs 15.1). On price, 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, Elemental Rx every 3 days. The most recent releases landed on May 16, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Periodic | Elemental Rx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/elemental-rx-periodic-table/id6450026459/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | — | Free |
| Size | 35 MB | 74 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [Proteverse LLC](https://appshunter.io/developer/287381015) |

## What reviewers say

### Periodic

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Elemental Rx

[App page](https://appshunter.io/ios/app/elemental-rx-periodic-table/id6450026459)

Explore the periodic table with detailed information on element properties, atomic structure, and history. Visualize electron shells, atomic crystal structures, and emission spectra. Personalize your learning with color-coded elements.

**Highlights:** Interactive Periodic Table, Detailed Element Information, Color-Coded Elements, Electron Shell Visualization, Atomic Emission Spectra, Atomic Crystal Structure Visualization, Anecdotes and History

**In-app purchases:** none


## Frequently asked questions

### Is Periodic free?

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

### Is Elemental Rx free?

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

### Do Periodic or Elemental Rx have ads?

Periodic shows ads; Elemental Rx does not.

### Which is updated more often, Periodic or Elemental Rx?

Periodic ships an update every 5 weeks, and Elemental Rx every 3 days. Most recently, Periodic was updated on May 16, 2026 and Elemental Rx on June 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.*