Comparison

YSS ELC vs Cat Probability Roulette

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

YSS ELC

Prepare for the speaking sections of TOEFL Junior and TOEFL Primary tests. Practice conversational skills and answering open-ended questions to build confidence for exam success.

Highlights
  • TOEFL Junior speaking practice
  • TOEFL Primary speaking practice
  • Conversation practice
  • Open-ended question answering
  • Exam preparation
Features
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TOEFL English Learning Center Application to help students prepare for the speaking parts of the TOEFL Junior and TOEFL Primary tests. Practice taking part in a conversation and answering open-ended questions like on the TOEFL Junior and TOEFL Primary tests.

About

Cat Probability Roulette

Features
Read full description

### 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

YSS ELC1 screens
Cat Probability Roulette3 screens

Verdict

The call

The clearest difference is in-app purchases: YSS ELC at none against Cat Probability Roulette's 1. YSS ELC also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.0). Cat Probability Roulette's advantage is update cadence (every 2 months vs every 5 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Cat Probability Roulette sells 1 one-off in-app purchase. YSS ELC asks for nothing beyond the download.

UpkeepUpdate frequency

YSS ELC ships an update every 5 months, Cat Probability Roulette every 2 months. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 5 level
YSS ELC versus Cat Probability Roulette: the parameters behind the verdict, then further details
ParameterYSS ELCCat Probability Roulette
PriceFreeFree
Rating3.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size10 MB147 MB
Age rating4+4+
DeveloperEdusoft.ltdYusuke Okada

In-app purchases

None

YSS ELC

No in-app purchases

1 purchases

Cat Probability Roulette

One-time1
  • [Remove Ads]$0.49

Questions

Is YSS ELC free?
YSS ELC is free to download, with no in-app purchases.
Is Cat Probability Roulette free?
Cat Probability Roulette is free to download, with in-app purchases available.
Do YSS ELC or Cat Probability Roulette have ads?
Cat Probability Roulette shows ads; YSS ELC does not.
Which is updated more often, YSS ELC or Cat Probability Roulette?
YSS ELC ships an update every 5 months, and Cat Probability Roulette every 2 months. Most recently, YSS ELC was updated on October 2, 2026 and Cat Probability Roulette on October 6, 2026.

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