SkillCert vs iDev Tango
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
iDev Tango
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iDev Tangoは、AIを活用した次世代の単語帳アプリです。アプリエンジニアが技術用語を効率的に学習できるよう、最新のAI技術と直感的なUIを組み合わせました。 ・AI定義作成機能 AI定義作成機能により、技術用語の意味を瞬時に理解できます。わからない単語を入力するだけで、専門家レベルの説明を自動作成。iOS、Swift、SwiftUIの専門用語も、AIがわかりやすく解説します。 ・フラッシュカードで、効率的に学習 スワイプ操作で直感的に学習できるフラッシュカード機能。理解度に応じた復習システムで、覚えにくい用語も効率的に学習できます。 ・テーマ別整理で、体系的な学習 フォルダ機能で、テーマ別に単語を整理。iOS開発、Swift言語、SwiftUIなど、学習したい分野ごとに単語を分類できます。自分だけのカスタム単語帳を作成し、効率的に学習を進めましょう。 ・オフラインでも学習可能 一度ダウンロードした用語は、オフライン環境でも学習できます。通勤中や移動中など、インターネット接続がない環境でも、いつでもどこでも学習を続けられます。 こんな方におすすめ! ・iOSアプリ開発を学んでいる方 ・SwiftやSwiftUIの技術用語を覚えたい方 ・エンジニアとしてスキルアップしたい方 ・効率的な学習方法を探している方 ・技術書を読む際の用語集として活用したい方 iDev Tangoで技術用語に強いiOSエンジニアに!
Screenshots
Verdict
The clearest difference is in-app purchases: iDev Tango at none against SkillCert's 3. SkillCert's advantage is iOS requirement (13.0 vs 17.6). On price, update cadence, ads 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. SkillCert sells 3 in-app purchases, starting at $2.99 per month. iDev Tango asks for nothing beyond the download.
SkillCert ships an update every 3 days, iDev Tango every 2 days. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.
| Parameter | SkillCert | iDev Tango |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days | Every 2 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 155 MB | 5 MB |
| Age rating | 12+ | 4+ |
| Developer | Yotaro SATO | shohei yukawa |
In-app purchases
SkillCert
- 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
iDev Tango
No in-app purchases









