# Learn Integumentary System vs Periodic Table

The clearest difference is price: Periodic Table at Free against Learn Integumentary System's $1.99. Periodic Table also leads on update cadence (every 3 weeks vs every 38 months). Learn Integumentary System's advantage is iOS requirement (11.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Periodic Table is free to download; Learn Integumentary System costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Learn Integumentary System ships an update every 38 months, Periodic Table every 3 weeks. The most recent releases landed on September 19, 2026 and July 9, 2026 respectively.

## The numbers

| Metric | Learn Integumentary System | Periodic Table |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/periodic-table-interactive-3d/id6758905875/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 13 MB | 10 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Nurten PIRLI](https://appshunter.io/developer/1495958705) | [Changzhi Ai](https://appshunter.io/developer/1873094747) |

## What reviewers say

### Learn Integumentary System

[App page](https://appshunter.io/ios/app/learn-integumentary-system/id1503289543)

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

**In-app purchases:** none


### Periodic Table

[App page](https://appshunter.io/ios/app/periodic-table-interactive-3d/id6758905875)

Explore the building blocks of the universe with a dynamic, interactive 3D periodic table. Access detailed scientific data, element biographies, and stunning visuals. This comprehensive reference tool is perfect for students, educators, and science enthusiasts.

**Highlights:** Interactive 3D atomic models, Detailed physical and chemical properties, Element biographies and real-world uses, Audio pronunciation of element names, Powerful search and filtering, Offline access to data, Responsive UI for all devices

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

**In-app purchases:** none


## Frequently asked questions

### Is Learn Integumentary System free?

Learn Integumentary System costs $1.99, with no in-app purchases.

### Is Periodic Table free?

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

### Do Learn Integumentary System or Periodic Table have ads?

Neither Learn Integumentary System nor Periodic Table shows ads.

### Which is updated more often, Learn Integumentary System or Periodic Table?

Learn Integumentary System ships an update every 38 months, and Periodic Table every 3 weeks. Most recently, Learn Integumentary System was updated on September 19, 2026 and Periodic Table on July 9, 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.*