# Useful Periodic Table vs Peridic Table

The clearest difference is price: Peridic Table at Free against Useful Periodic Table's $2.99. Peridic Table also leads on update cadence (every 2 months vs every 25 months). Useful Periodic Table's advantage is in-app purchases (none vs 6). On ads, device support and iOS requirement there is nothing between them.

Peridic Table is free to download; Useful Periodic Table costs $2.99 up front. Peridic Table sells 6 one-off in-app purchases. Useful Periodic Table asks for nothing beyond the download.

Useful Periodic Table ships an update every 25 months, Peridic Table every 2 months. The most recent releases landed on September 2, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Useful Periodic Table | Peridic Table |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/peridic-table/id6743040165/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 56 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mind Trends LLC](https://appshunter.io/developer/582509215) | [Ethar Shrouf](https://appshunter.io/developer/1611749293) |

## What reviewers say

### Useful Periodic Table

[App page](https://appshunter.io/ios/app/useful-periodic-table/id582509212)

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

**In-app purchases:** none


### Peridic Table

[App page](https://appshunter.io/ios/app/peridic-table/id6743040165)

Explore chemistry with an interactive periodic table app. It offers gamified learning, detailed element profiles, and useful chemistry tools like a calculator and solubility chart. Designed for students and science enthusiasts to deepen their understanding.

**Highlights:** Gamified learning with chemistry games, Advanced element sorting and filtering, Chemistry calculator for equations, Detailed element profiles with real-life images, Solubility table, Powerful element search function

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donate 1.99$ For Support App | $1.99 | one-time |
| Donate 5.99$ For Support App | $5.99 | one-time |
| Donate 9.99$  For Support App | $9.99 | one-time |
| Donate 19.99 For Support App | $19.99 | one-time |
| Donate 50$ For Support App | $49.99 | one-time |
| Donate 100$ For Support App | $100.00 | one-time |


## Frequently asked questions

### Is Useful Periodic Table free?

Useful Periodic Table costs $2.99, with no in-app purchases.

### Is Peridic Table free?

Peridic Table is free to download, with in-app purchases available.

### Do Useful Periodic Table or Peridic Table have ads?

Neither Useful Periodic Table nor Peridic Table shows ads.

### Which is updated more often, Useful Periodic Table or Peridic Table?

Useful Periodic Table ships an update every 25 months, and Peridic Table every 2 months. Most recently, Useful Periodic Table was updated on September 2, 2026 and Peridic Table on June 4, 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.*