# Periodic Table Elements Master vs Smithsonian

The clearest difference is review sentiment: Smithsonian at 100% against Periodic Table Elements Master's 0%. Smithsonian also leads on price (Free vs $1.99) and update cadence (every 3 months vs every 17 months). Periodic Table Elements Master's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

Smithsonian is free to download; Periodic Table Elements Master costs $1.99 up front. Smithsonian sells 2 one-off in-app purchases. Periodic Table Elements Master asks for nothing beyond the download.

Periodic Table Elements Master ships an update every 17 months, Smithsonian every 3 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Periodic Table Elements Master | Smithsonian |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 3 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 21 MB | 285 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DigiGalaxy](https://appshunter.io/developer/1470420175) | [PlayDate Digital Inc.](https://appshunter.io/developer/652113715) |

## What reviewers say

### Periodic Table Elements Master

[App page](https://appshunter.io/ios/app/periodic-table-elements-master/id1471264123)

Master the Periodic Table of Elements through interactive study modes and engaging quiz games. This app offers a fun, visual approach to learning key facts and stats for all ages, reinforcing knowledge with flashcards and various puzzle-based challenges.

**Highlights:** Interactive Periodic Table study, Flashcard learning technique, Multiple quiz modes (Symbols, Fill the Table, Names), Visual and animated graphics, Progress tracking for learning, Designed for all ages

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

**In-app purchases:** none


### Smithsonian

[App page](https://appshunter.io/ios/app/smithsonian-planets/id6504839302)

Explore the solar system with interactive games and animations. Learn fascinating facts about planets, moons, and the asteroid belt. Designed for curious young minds to introduce astronomy basics.

**Highlights:** Fascinating facts about the solar system, Mini games like Space Winter Rush, Interactive activities, Educational animations, Read to Me text, Collect planet badges

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Buy 5 Planets | $2.99 | one-time |


## Frequently asked questions

### Is Periodic Table Elements Master free?

Periodic Table Elements Master costs $1.99, with no in-app purchases.

### Is Smithsonian free?

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

### Do Periodic Table Elements Master or Smithsonian have ads?

Neither Periodic Table Elements Master nor Smithsonian shows ads.

### Which is updated more often, Periodic Table Elements Master or Smithsonian?

Periodic Table Elements Master ships an update every 17 months, and Smithsonian every 3 months. Most recently, Periodic Table Elements Master was updated on October 24, 2026 and Smithsonian on October 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.*