# The Elements by Theodore Gray vs Cato's Hike

The clearest difference is rating: The Elements by Theodore Gray at 4.6 against Cato's Hike's 4.1. The Elements by Theodore Gray also leads on review sentiment (73% vs 64%). Cato's Hike's advantage is update cadence (fortnightly vs every 3 months) and price ($5.99 vs $9.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

The Elements by Theodore Gray costs $9.99 and Cato's Hike $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

The Elements by Theodore Gray holds the better App Store score, 4.6 against 4.1. Both are backed by a comparable volume of ratings — 123 and 48 respectively. Written reviews point the same way: 73% of The Elements by Theodore Gray's written reviews are positive against 64% of Cato's Hike's.

The Elements by Theodore Gray ships an update every 3 months, Cato's Hike fortnightly. Both last shipped on November 1, 2026.

## The numbers

| Metric | The Elements by Theodore Gray | Cato's Hike |
| --- | --- | --- |
| Price | $9.99 | **$5.99** |
| Rating | **[4.6 (123 ratings)](https://appshunter.io/ios/app/the-elements-by-theodore-gray/id364147847/reviews)** | [4.1 (48 ratings)](https://appshunter.io/ios/app/catos-hike/id574335479/reviews) |
| Number of ratings | **123** | 48 |
| Positive reviews | **73.1% of reviews** | 64.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Paid | Paid |
| Size | 1.5 GB | 38 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NatureGuides Ltd.](https://appshunter.io/developer/310574314) | [Hesham Wahba](https://appshunter.io/developer/358331461) |

## What reviewers say

### The Elements by Theodore Gray

[App page](https://appshunter.io/ios/app/the-elements-by-theodore-gray/id364147847)

Explore the building blocks of the universe with this interactive guide to the periodic table. Discover beautifully photographed elements, fascinating stories, and detailed 3D models of over 500 objects, all presented in multiple languages.

**Highlights:** Living periodic table interface, Rotating 3D element samples, Detailed 3D object models, Pinch-zoom and 3D stereo viewing, Multilingual support, Fascinating stories and facts

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

**In-app purchases:** none

**What reviewers like**

- 💎 Stunning visuals and 3D animations
- 📚 Comprehensive information on elements
- 🎨 Engaging and humorous writing style
- 🏫 Excellent educational tool for all ages

**What reviewers complain about**

- 🔍 Difficult to navigate and find specific elements
- 🔌 Massive file size takes up a lot of storage
- 🐛 Frequent crashes and stability issues
- 💰 Expensive for the limited content

**Reported bugs**

- Element descriptions cut off on iPhone 6 Plus
- Crashes when switching landscape orientations
- Unable to download app after initial purchase

**Requested features**

- Add option to disable animations
- Improve periodic table navigation
- Include more detailed scientific information
- Support multiple languages and spellings


### Cato's Hike

[App page](https://appshunter.io/ios/app/catos-hike/id574335479)

Embark on a programming adventure where you guide a young boy through a new world by creating programs. Learn fundamental coding concepts like loops and branches through engaging puzzles and a visual interface. Create and share your own challenges with a powerful map editor.

**Highlights:** Visual programming interface with cards, Introduction to loops, branches, and memory, 60 levels and 12 tutorials, Map editor for creating and sharing puzzles, Save and preview custom maps, Email puzzle solutions and maps

**In-app purchases:** none


## Frequently asked questions

### Is The Elements by Theodore Gray free?

The Elements by Theodore Gray costs $9.99, with no in-app purchases.

### Is Cato's Hike free?

Cato's Hike costs $5.99, with no in-app purchases.

### Which has better reviews, The Elements by Theodore Gray or Cato's Hike?

The Elements by Theodore Gray is rated higher. The Elements by Theodore Gray averages 4.6 out of 5 from 123 ratings, while Cato's Hike averages 4.1 from 48 ratings.

### Do The Elements by Theodore Gray or Cato's Hike have ads?

Neither The Elements by Theodore Gray nor Cato's Hike shows ads.

### Which is updated more often, The Elements by Theodore Gray or Cato's Hike?

The Elements by Theodore Gray ships an update every 3 months, and Cato's Hike fortnightly. Most recently, The Elements by Theodore Gray was updated on November 1, 2026 and Cato's Hike on November 1, 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.*