Comparison

SkillCert vs Pengword

Price, ratings, monetisation and update history for both apps, side by side — 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】 • Real-Time Battles: Compete online against other users using certification knowledge. Winners are determined by both accuracy and response speed. • Ranked Matches: Weekly seasonal rankings! Visualize your ranking and deviation score through competitive matches. • 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. • Flashcards / Glossary • Community Features: Stay motivated and connect with like-minded learners through timelines (SNS), direct messaging, and chat features. • 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

Pengword

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Key Features of Pengword ■ AI-Powered Input Assistance Simply enter a word, and the AI automatically generates its meaning, part of speech, phonetic symbols, example sentences, synonyms, and antonyms. Audio playback for both words and example sentences is also available. Currently, the app supports the following four languages: - English, Swedish, Spanish, French and Italian The following premium features are available to subscribers: - Customizable Example Sentences: Specify the length and tone of generated sentences. - High-Quality Audio: Natural, human-like voice synthesis for playback. ■ Spaced Repetition Learning The app prompts you to review registered words just as your brain is about to forget them, based on the forgetting curve. To improve retention, Pengword offers multimodal review methods, including: - Multiple-choice quizzes - Keyboard input - Fill-in-the-blank sentences - Listening exercises ■ Grow Your Penguin as You Review This feature is a personal passion project of the developer! As you review words, your penguin egg will hatch and grow. You can view your collection of grown penguins in the Gallery. This adds a touch of fun to the often-monotonous task of memorization. -------------------------------------------------------------------------- "Scout Mode": Discover New Words While Pengword's primary focus is registering words you want to learn, Scout Mode is designed for those times you want to encounter something new. In Scout Mode, the AI suggests words based on your selected learning goals and level (e.g., Goal: "TOEIC," Level: "600–750"). You can sort through these suggestions by swiping left or right to indicate whether you already know the word. Words you didn't know can be registered in bulk, with the AI instantly generating all definitions and example sentences for you. -------------------------------------------------------------------------- Recommended For: - Those looking to expand their vocabulary efficiently. - Anyone who wants to save time on manual flashcard creation. - Learners who want to review words at the scientifically optimal time. - Penguin lovers! [Terms of Service] https://pengword-a053b.web.app/terms [Privacy Policy] https://pengword-a053b.web.app/privacy_policy

Screenshots

SkillCert4 screens
Pengword4 screens

Verdict

The call

The clearest difference is update cadence: SkillCert at every 4 days against Pengword's every 2 weeks. SkillCert also leads on device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, ads and in-app purchases 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. SkillCert sells 3 in-app purchases, starting at $2.99 per month and Pengword sells 1 in-app purchase, 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, Pengword every 2 weeks. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 3 level
SkillCert versus Pengword: the parameters behind the verdict, then further details
ParameterSkillCertPengword
PriceFreeFree
Update frequencyEvery 4 days — betterEvery 2 weeks
AdsYesYes
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better26.0
Further details — not scored
Size155 MB26 MB
Age rating12+12+
DeveloperYotaro SATOToya Niibori

In-app purchases

3 purchases

SkillCert

Subscriptions3
  • SKILL Cert by AI ライトプラン$2.991 Month
  • SKILL Cert by AI スタンダードプラン$9.991 Month
  • SKILL Cert by AI プレミアムプラン$29.991 Month
1 purchases

Pengword

Subscriptions1
  • Premium Monthly$2.991 Month

Questions

Is SkillCert free?
SkillCert is free to download, with in-app purchases available.
Is Pengword free?
Pengword is free to download, with in-app purchases available.
Do SkillCert or Pengword have ads?
Both SkillCert and Pengword show ads.
Which is updated more often, SkillCert or Pengword?
SkillCert ships an update every 4 days, and Pengword every 2 weeks. Most recently, SkillCert was updated on October 25, 2026 and Pengword on October 9, 2026.

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