# Periodacity vs Elemental Rx

The clearest difference is rating: Elemental Rx at 5.0 against Periodacity's 3.7. Elemental Rx also leads on update cadence (every 3 days vs every 3 weeks) and device support (4 vs 2). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Elemental Rx holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

Periodacity ships an update every 3 weeks, Elemental Rx every 3 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Periodacity | Elemental Rx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/periodacity/id612368742/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/elemental-rx-periodic-table/id6450026459/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Free | Free |
| Size | 5 MB | 74 MB |
| Requires iOS | 16.1 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Jesse Spencer](https://appshunter.io/developer/612368745) | [Proteverse LLC](https://appshunter.io/developer/287381015) |

## What reviewers say

### Periodacity

[App page](https://appshunter.io/ios/app/periodacity/id612368742)

This app provides comprehensive reference information for all known elements on the periodic table. It's designed for chemists and chemistry students seeking quick access to element data.

**Highlights:** Complete periodic table data, Information on all known elements, Designed for chemists, Aimed at chemistry students, Reference tool

**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 Periodacity free?

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

### Is Elemental Rx free?

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

### Which has better reviews, Periodacity or Elemental Rx?

Elemental Rx is rated higher. Periodacity averages 3.7 out of 5 from 3 ratings, while Elemental Rx averages 5.0 from 2 ratings.

### Do Periodacity or Elemental Rx have ads?

Neither Periodacity nor Elemental Rx shows ads.

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

Periodacity ships an update every 3 weeks, and Elemental Rx every 3 days. Most recently, Periodacity was updated on November 1, 2026 and Elemental Rx on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*