Comparison

SkillCert vs Yabai Word

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

Head to head
About

SkillCert

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【About This App】 Supports over 200 certifications and qualifications! Compete in real-time battles and weekly ranked matches using AI-generated exam questions based on official certification names and syllabi. Connect with fellow learners through SNS-style features and chat to expand your learning community. 【Features】 β€’ Real-Time Battles: Compete online against other users using certification knowledge. Winners are determined by both accuracy and response speed. β€’ Ranked Matches: Weekly seasonal rankings! Visualize your ranking and deviation score through competitive matches. β€’ Practice Mode: Randomly selects 10 questions from the exam database. Ask AI about topics you do not understand. Users can vote questions as Good/Bad, and questions receiving many Bad votes are automatically removed every week. β€’ Flashcards / Glossary β€’ Community Features: Stay motivated and connect with like-minded learners through timelines (SNS), direct messaging, and chat features. β€’ AI Diagnostic System: Automatically identifies weak areas and suggests the next best study actions to minimize learning time. 【Terms of Service / Privacy Policy】 Terms of Service: https://scba-ai.com/en/terms Privacy Policy: https://scba-ai.com/en/privacy

About

Yabai Word

Features
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Ever wondered what that slang term in your favorite anime or J-pop lyric actually means? Yabai Word teaches you the Japanese your textbook never will. FEATURES β€’ Today's Slang β€” a new word every day, hand-picked from categories: basic expressions, youth slang, internet slang, anime/otaku terms, oshi fandom language, and gyaru culture (classic & reiwa era) β€’ Native pronunciation β€” tap the speaker icon to hear every word spoken aloud β€’ Example sentences β€” see slang used in real, natural context β€’ Archive β€” browse the full word collection anytime β€’ Quiz mode β€” test what you've learned β€’ Favorites β€” save the words you want to remember β€’ Japanese mode β€” switch the whole app to Japanese with the EN/ζ—₯ button for explanations, origins and today's equivalents written for native speakers: a step up for advanced learners β€’ 300 words β€” now including 45 retro slang words from Japan's 80s to the 2010s Whether you're an anime fan, a J-pop listener, learning Japanese for travel, or just want to understand what your favorite creators are actually saying, Yabai Word gets you talking like a native β€” not a textbook. Yabai Word Premium (auto-renewing subscription, monthly or yearly) unlocks the full archive with complete explanations, unlimited quizzes with weak-word review and endless mode, faster illustration unlocks, and an ad-free experience. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel it anytime in Settings > Subscriptions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yousaku2222-cmd.github.io/yabai-word/privacy.html

Screenshots

SkillCert4 screens
Yabai Word4 screens

Verdict

The call

The clearest difference is update cadence: Yabai Word at every 2 days against SkillCert's every 4 days. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. SkillCert sells 3 in-app purchases, starting at $2.99 per month and Yabai Word sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SkillCert ships an update every 4 days, Yabai Word every 2 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard1 real difference Β· 5 level
SkillCert versus Yabai Word: the parameters behind the verdict, then further details
ParameterSkillCertYabai Word
PriceFreeFree
Update frequencyEvery 4 daysEvery 2 days β€” better
AdsYesYes
In-app purchasesYesYes
DevicesiPhone, iPad, iPod β€” betteriPhone, iPod
Requires iOS15.015.0
Further details β€” not scored
Size155 MB90 MB
Age rating12+4+
DeveloperYotaro SATOYUSAKU MIZOGAMI

In-app purchases

3 purchases

SkillCert

Subscriptions3
  • SKILL Cert by AI γƒ©γ‚€γƒˆγƒ—γƒ©γƒ³$2.991 Month
  • SKILL Cert by AI スタンダードプラン$9.991 Month
  • SKILL Cert by AI γƒ—γƒ¬γƒŸγ‚’γƒ γƒ—γƒ©γƒ³$29.991 Month
2 purchases

Yabai Word

Subscriptions2
  • Premium Monthly$2.991 Month
  • Premium Yearly$19.991 Year

Questions

Is SkillCert free?
SkillCert is free to download, with in-app purchases available.
Is Yabai Word free?
Yabai Word is free to download, with in-app purchases available.
Do SkillCert or Yabai Word have ads?
Both SkillCert and Yabai Word show ads.
Which is updated more often, SkillCert or Yabai Word?
SkillCert ships an update every 4 days, and Yabai Word every 2 days. Most recently, SkillCert was updated on October 25, 2026 and Yabai Word on October 31, 2026.

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