# Triatlas vs Perodic Table

The clearest difference is price: Triatlas at Free against Perodic Table's $0.99. Triatlas also leads on ratings volume (15 vs 1) and iOS requirement (6.1 vs 12.0). Perodic Table's advantage is update cadence (every 3 days vs every 13 months) and rating (5.0 vs 4.8). On ads, in-app purchases and device support there is nothing between them.

Triatlas is free to download; Perodic Table costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Perodic Table holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Triatlas has 15 ratings behind it against 1, so its average is the more settled of the two.

Triatlas ships an update every 13 months, Perodic Table every 3 days. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Triatlas | Perodic Table |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.8 (15 ratings)](https://appshunter.io/ios/app/triatlas/id592681081/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/perodic-table/id6743020011/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 days** |
| Monetization | **Free** | Paid |
| Size | 465 MB | 31 MB |
| Requires iOS | **6.1** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DDQ](https://appshunter.io/developer/418328467) | [PIXOPLAY IT SERVICES PRIVATE LIMITED](https://appshunter.io/developer/842565895) |

## What reviewers say

### Triatlas

[App page](https://appshunter.io/ios/app/triatlas/id592681081)

Explore the cosmos with a comprehensive star chart featuring millions of celestial objects, including stars, galaxies, and nebulae. Customize your viewing experience with night vision, orientation controls, and intuitive navigation.

**Highlights:** Detailed star catalog (up to mag 12.6), Extensive galaxy and nebula data, Support for clusters and double stars, Flexible night vision mode, Adjustable orientation controls (flip/mirror), Chart-to-chart navigation

**Features:** Vision Pro support

**In-app purchases:** none


### Perodic Table

[App page](https://appshunter.io/ios/app/perodic-table/id6743020011)

Explore elements with interactive 3D Bohr models and detailed information. This app offers smart search, trend analysis, and real-world applications, making chemistry engaging for students, teachers, and enthusiasts.

**Highlights:** Interactive 3D Bohr models, Detailed element information, Smart search and quick access, Group and period trend analysis, Real-world element applications, User-friendly interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Triatlas free?

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

### Is Perodic Table free?

Perodic Table costs $0.99, with no in-app purchases.

### Which has better reviews, Triatlas or Perodic Table?

Perodic Table is rated higher. Triatlas averages 4.8 out of 5 from 15 ratings, while Perodic Table averages 5.0 from 1 ratings.

### Do Triatlas or Perodic Table have ads?

Neither Triatlas nor Perodic Table shows ads.

### Which is updated more often, Triatlas or Perodic Table?

Triatlas ships an update every 13 months, and Perodic Table every 3 days. Most recently, Triatlas was updated on November 1, 2026 and Perodic Table on October 28, 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.*