Comparison

SkillCert vs PenDrop

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

PenDrop

Features
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PenDropは、「アウトプット」 にこだわった、本気で英語を身につけたい人のためのトレーニングアプリです。 ただ英文法を「読む」、「穴埋め」、「並び替え」だけでは、英語力はつきません。 本アプリは、「一から英文を組み立てる(英作文ドリル)」 と 「記憶に定着させる(単語カード)」 という2つの強力なアウトプットサイクルを回すことで、実践的な英語力を確実に養います。 【PenDropの3つのコアメソッド】 「書く」から身につく!実践型・文法ドリル 選択問題ではありません。自分の頭で考え、ゼロから英文を組み立てるトレーニングです。 文法・構文ごとに体系化されたドリルで、曖昧な知識を「使える武器」に変えていきます。 間違えた箇所はその場でAIが徹底解説。なぜ間違えたのかを即座に理解できます。 脳科学に基づく「忘却曲線」単語学習 人間の記憶の仕組み(エビングハウスの忘却曲線)を利用し、忘れかけた瞬間に復習を促します。 覚えた単語は表示間隔が広がり、苦手な単語は重点的に出題。最短時間で最大の語彙力を構築します。 AIによる精密な添削コーチング あなたが書いた英語をAIが瞬時に分析。文法的な正誤だけでなく、より自然な表現への書き換えも提案します。 独学では気づけない「自分のクセ」や「ニュアンスのズレ」を修正し、洗練された英語へ導きます。 【こんな学習者に最適です】 インプット学習(読む・聞く)ばかりで伸び悩みを感じている方 瞬間的に英文を組み立てる「英語脳」を作りたい方 英検や入試のライティングで高得点を狙いたい方 ただの間違い直しアプリではありません。 PenDropで、圧倒的なアウトプット体験を始めましょう。

Screenshots

SkillCert4 screens
PenDrop4 screens

Verdict

The call

The clearest difference is in-app purchases: PenDrop at none against SkillCert's 3. PenDrop also leads on ads (none vs shown). SkillCert's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence 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. SkillCert sells 3 in-app purchases, starting at $2.99 per month. PenDrop asks for nothing beyond the download.

UpkeepUpdate frequency

SkillCert ships an update every 4 days, PenDrop every 5 days. Both last shipped on October 25, 2026.

Scorecard3 real differences · 3 level
SkillCert versus PenDrop: the parameters behind the verdict, then further details
ParameterSkillCertPenDrop
PriceFreeFree
Update frequencyEvery 4 days — betterEvery 5 days
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size155 MB46 MB
Age rating12+4+
DeveloperYotaro SATOAKIO FURUTSUKA

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
None

PenDrop

No in-app purchases

Questions

Is SkillCert free?
SkillCert is free to download, with in-app purchases available.
Is PenDrop free?
PenDrop is free to download, with no in-app purchases.
Do SkillCert or PenDrop have ads?
SkillCert shows ads; PenDrop does not.
Which is updated more often, SkillCert or PenDrop?
SkillCert ships an update every 4 days, and PenDrop every 5 days. Most recently, SkillCert was updated on October 25, 2026 and PenDrop on October 25, 2026.

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