Inside Earth vs Cat Probability Roulette
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Inside Earth
Explore the Earth's interior by virtually peeling back its layers. Understand the composition of the crust, mantle, and core. Learn about tectonic plates, volcanism, and earthquakes.
- Interactive layer peeling
- Tectonic plate visualization
- Volcanism and earthquake explanation
- Compositional learning
- Geological process discovery
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What's inside our planet? Peel away layers to discover their composition. Learn how earth's crust is divided into tectonic plates. Discover how volcanism and earthquakes occur wherever these plates meet.
Cat Probability Roulette
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### Neko Neko Probability Roulette A simple, thrilling color-guessing game that's a cut above ordinary roulette! If your chosen color lands perfectly, points equal to the number on the board will skyrocket! Miss and your points halve... but land the same color consecutively for bonus points pouring in! Battle it out in 10 intense matches! Simple rules make it perfect for learning about probability and statistics. Put your luck and brainpower to the test! **About Ads** Ads appear briefly only after the 1st match and every 5th match thereafter. For just 100 yen, you can completely remove ads for uninterrupted play! Compete with friends for the best score and get hyped, or just keep smashing your own personal best. Enjoy testing your luck and training your brain in Neko Neko World! BGM Casino written by Capybara Kids Roulette By the way. Phalene Voice “VOICEVOX: Zundamon”
Screenshots
Verdict
The clearest difference is in-app purchases: Inside Earth at none against Cat Probability Roulette's 1. Inside Earth also leads on ads (none vs shown) and update cadence (fortnightly vs every 2 months). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Cat Probability Roulette sells 1 one-off in-app purchase. Inside Earth asks for nothing beyond the download.
Inside Earth ships an update fortnightly, Cat Probability Roulette every 2 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Inside Earth | Cat Probability Roulette |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (81 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 81 — better | — |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 190 MB | 138 MB |
| Age rating | 4+ | 4+ |
| Developer | Sebastian Andre | Yusuke Okada |
In-app purchases
Inside Earth
No in-app purchases
Cat Probability Roulette
- [Remove Ads]$0.49
Questions
Is Inside Earth free?
Is Cat Probability Roulette free?
Do Inside Earth or Cat Probability Roulette have ads?
Which is updated more often, Inside Earth or Cat Probability Roulette?
Other comparisons
