SkillStack - スキマ時間でIT資格合格
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About this app
Even with a busy schedule, you can pass IT certification exams.
SkillStack is an IT certification exam preparation app specifically designed for "spare time" during commutes, breaks, and before bed.
It supports over 60 IT certifications, from national certifications to AWS, Azure, and Google Cloud, all in one app.
16 certifications, including the G-Test, Statistics Test, and AWS CLF, are available with all content free of charge.
"I can't find enough time to study," "I can't stick with thick textbooks."
Even if you're busy like that, you can aim for success efficiently with just 5 minutes of spare time each day.
Why can you pass in such a short time?
Because AI analyzes your weaknesses and presents only the problems you should be solving right now.
It eliminates wasted time on irrelevant problems, guiding you to success via the shortest route.
Start learning now without registration.
You can create an account after you like it.
■ Three Reasons Why You Can Pass in Your Spare Time
【1. Start Immediately with Just One Question】
Restart your studies the moment you open the app, whether on your commute or during a break.
Don't waste a single second of your spare time.
【2. AI Suggests Only the Problems You Should Do Today】
The AI analyzes your answer history and automatically identifies your weak areas.
You can focus your limited time on the most effective problems.
【3. AI Explains Why You Made Mistakes】
Ask the AI about problems you don't understand. It provides clear explanations, including related knowledge, so you can deepen your understanding even in a short amount of time.
■ Supports Over 60 IT Certifications with One App
No need to buy separate study materials for each certification.
[National Qualifications (Information Technology Engineer Examination)]
・IT Passport / Fundamental Information Technology Engineer / Applied Information Technology Engineer
・Network Specialist / Database Specialist / Information Security Support Specialist
[AWS Certifications]
・CLF / AIF (Completely Free)
・SAA / DVA / CloudOps (formerly SOA) / DEA / MLA
・SAP / DOP / ANS / SCS / Generative AI Developer
[Google Cloud / Microsoft]
・13 Google Cloud Certifications (Digital Leader and Generative AI Leader are free)
・Azure Fundamentals (AZ-900) / Azure Administrator (AZ-104) / AI-900 / DP-900 / PL-900, etc.
[Network / Linux]
・Cisco CCNA / CCST Networking
・LinuC Level 1-4
[Development / Database]
・Java (Bronze / Silver / Gold)
・Python (Engineer Certification Basic Exam / Programming Ability Certification Levels 1-3)
・OSS-DB Silver / Gold
【AI / Data Science】
• G-Test / E-Certification / Generative AI Passport
• Data Scientist Certification / Statistics Certification (Levels 3-1, Pre-Level 1, etc.)
■ 16 Certifications: All Content Free
You can study all the questions for the following certifications for free without registering as a member.
• Cloud Introduction: AWS CLF/AIF / AZ-900/AI-900/DP-900 / Google Cloud Digital Leader/Generative AI Leader
• AI/Data: G-Test / Generative AI Passport / Statistics Certification Level 3
• Development/Infrastructure: Java Bronze / Python Proficiency Certification Level 3 / Cisco CCST, etc.
You can start by building a foundation with free certifications, then step up to higher-level certifications.
■ Recommended for:
* Busy working professionals who can't find dedicated study time
* Those who want to study efficiently by utilizing commutes and spare time
* Those who find thick textbooks insufficient
* Those who want to challenge themselves with IT certifications but don't know where to start
* Those who want to identify their weaknesses and focus their efforts on those areas
■ Main Features
【Problem Practice by Subject and Year】
Practice a wealth of problems categorized by subject and year.
Learn quickly during spare time.
【AI Weakness Analysis】
AI analyzes your answer history to instantly identify your weak areas.
Use your limited time efficiently.
【Today's Recommendation】
AI suggests problems to solve today based on your learning progress.
【Passing Ability Score & Learning Report】
Visualize your abilities with a score from 0 to 100.
See your retention rate, subject-specific performance, and mock exam progress at a glance.
【Ask the AI】
Ask the AI questions you don't understand. It will explain why that answer is correct, including related knowledge.
[AI-Based Scoring]
Essay questions are also scored and feedback is provided by AI.
This allows for practice in the actual exam format.
[Mock Exam]
Check your abilities with a mock exam that closely resembles the real thing.
Ideal for practicing time management.
[Questions to Review]
Review difficult questions and questions that you haven't yet mastered.
Avoid repeating the same mistakes.
[Flashcards]
Quickly check vocabulary during spare time.
[Learning Continuation Support]
Set an exam date and count down. Records consecutive learning days and provides reminder notifications to support your daily learning habit.
■ Pricing Plans
【Free】
・All content for 16 certifications (AWS CLF/AIF, G-Test, AZ-900, etc.)
・Free access to the first question set for other certifications
・AI function (5 credits per month, 10 credits for the first month)
【Premium Monthly Plan (¥980/month)】
・All certifications and question sets unlocked
・Unlimited use of mock exams and filtered learning
・80 AI function credits per month
【Premium Annual Plan (¥9,800/year)】
・In addition to the monthly plan's features, 100 credits per month
・Save 2 months
Individual AI credit packs are also available for purchase.
■ Safe and Secure Use
・No registration required, start immediately
・Purchase recovery supported (peace of mind even after changing devices or reinstalling)
・Account deletion is possible at any time
Start for free and find the learning style that suits you.
Make the most of your spare time and achieve IT certification success with SkillStack.
SkillStack is an IT certification exam preparation app specifically designed for "spare time" during commutes, breaks, and before bed.
It supports over 60 IT certifications, from national certifications to AWS, Azure, and Google Cloud, all in one app.
16 certifications, including the G-Test, Statistics Test, and AWS CLF, are available with all content free of charge.
"I can't find enough time to study," "I can't stick with thick textbooks."
Even if you're busy like that, you can aim for success efficiently with just 5 minutes of spare time each day.
Why can you pass in such a short time?
Because AI analyzes your weaknesses and presents only the problems you should be solving right now.
It eliminates wasted time on irrelevant problems, guiding you to success via the shortest route.
Start learning now without registration.
You can create an account after you like it.
■ Three Reasons Why You Can Pass in Your Spare Time
【1. Start Immediately with Just One Question】
Restart your studies the moment you open the app, whether on your commute or during a break.
Don't waste a single second of your spare time.
【2. AI Suggests Only the Problems You Should Do Today】
The AI analyzes your answer history and automatically identifies your weak areas.
You can focus your limited time on the most effective problems.
【3. AI Explains Why You Made Mistakes】
Ask the AI about problems you don't understand. It provides clear explanations, including related knowledge, so you can deepen your understanding even in a short amount of time.
■ Supports Over 60 IT Certifications with One App
No need to buy separate study materials for each certification.
[National Qualifications (Information Technology Engineer Examination)]
・IT Passport / Fundamental Information Technology Engineer / Applied Information Technology Engineer
・Network Specialist / Database Specialist / Information Security Support Specialist
[AWS Certifications]
・CLF / AIF (Completely Free)
・SAA / DVA / CloudOps (formerly SOA) / DEA / MLA
・SAP / DOP / ANS / SCS / Generative AI Developer
[Google Cloud / Microsoft]
・13 Google Cloud Certifications (Digital Leader and Generative AI Leader are free)
・Azure Fundamentals (AZ-900) / Azure Administrator (AZ-104) / AI-900 / DP-900 / PL-900, etc.
[Network / Linux]
・Cisco CCNA / CCST Networking
・LinuC Level 1-4
[Development / Database]
・Java (Bronze / Silver / Gold)
・Python (Engineer Certification Basic Exam / Programming Ability Certification Levels 1-3)
・OSS-DB Silver / Gold
【AI / Data Science】
• G-Test / E-Certification / Generative AI Passport
• Data Scientist Certification / Statistics Certification (Levels 3-1, Pre-Level 1, etc.)
■ 16 Certifications: All Content Free
You can study all the questions for the following certifications for free without registering as a member.
• Cloud Introduction: AWS CLF/AIF / AZ-900/AI-900/DP-900 / Google Cloud Digital Leader/Generative AI Leader
• AI/Data: G-Test / Generative AI Passport / Statistics Certification Level 3
• Development/Infrastructure: Java Bronze / Python Proficiency Certification Level 3 / Cisco CCST, etc.
You can start by building a foundation with free certifications, then step up to higher-level certifications.
■ Recommended for:
* Busy working professionals who can't find dedicated study time
* Those who want to study efficiently by utilizing commutes and spare time
* Those who find thick textbooks insufficient
* Those who want to challenge themselves with IT certifications but don't know where to start
* Those who want to identify their weaknesses and focus their efforts on those areas
■ Main Features
【Problem Practice by Subject and Year】
Practice a wealth of problems categorized by subject and year.
Learn quickly during spare time.
【AI Weakness Analysis】
AI analyzes your answer history to instantly identify your weak areas.
Use your limited time efficiently.
【Today's Recommendation】
AI suggests problems to solve today based on your learning progress.
【Passing Ability Score & Learning Report】
Visualize your abilities with a score from 0 to 100.
See your retention rate, subject-specific performance, and mock exam progress at a glance.
【Ask the AI】
Ask the AI questions you don't understand. It will explain why that answer is correct, including related knowledge.
[AI-Based Scoring]
Essay questions are also scored and feedback is provided by AI.
This allows for practice in the actual exam format.
[Mock Exam]
Check your abilities with a mock exam that closely resembles the real thing.
Ideal for practicing time management.
[Questions to Review]
Review difficult questions and questions that you haven't yet mastered.
Avoid repeating the same mistakes.
[Flashcards]
Quickly check vocabulary during spare time.
[Learning Continuation Support]
Set an exam date and count down. Records consecutive learning days and provides reminder notifications to support your daily learning habit.
■ Pricing Plans
【Free】
・All content for 16 certifications (AWS CLF/AIF, G-Test, AZ-900, etc.)
・Free access to the first question set for other certifications
・AI function (5 credits per month, 10 credits for the first month)
【Premium Monthly Plan (¥980/month)】
・All certifications and question sets unlocked
・Unlimited use of mock exams and filtered learning
・80 AI function credits per month
【Premium Annual Plan (¥9,800/year)】
・In addition to the monthly plan's features, 100 credits per month
・Save 2 months
Individual AI credit packs are also available for purchase.
■ Safe and Secure Use
・No registration required, start immediately
・Purchase recovery supported (peace of mind even after changing devices or reinstalling)
・Account deletion is possible at any time
Start for free and find the learning style that suits you.
Make the most of your spare time and achieve IT certification success with SkillStack.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Financial info and 3 others
Data is encrypted in transit
You can request that data be deleted
What’s new
【新機能】
・学習レポート画面を追加:学習トレンド・定着度・分野別の成績・模試スコアの推移をまとめて確認できます
・資格ページから試験日を設定すると、試験までのカウントダウンがレポートに表示されるようになりました
・演習に10問ごとの区切りを追加:きりの良いところで中断でき、途中でやめても解いた分の学習記録が保存されるようになりました
・ホームに「今日の10問」を追加:復習すべき問題と新しい問題をミックスして毎日出題します
・「合格力スコア」を追加:定着度・網羅率・直近の成績から資格ごとの到達度を0-100で表示。復習しないと下がるので、試験日まで育てて守りましょう
・ホーム画面を整理:学習の続きにすぐ戻れるレイアウトになり、モード選択もわかりやすくなりました
・ゲスト利用からのアカウント連携がより簡単・確実になりました
・アプリの安定性を改善しました
・学習レポート画面を追加:学習トレンド・定着度・分野別の成績・模試スコアの推移をまとめて確認できます
・資格ページから試験日を設定すると、試験までのカウントダウンがレポートに表示されるようになりました
・演習に10問ごとの区切りを追加:きりの良いところで中断でき、途中でやめても解いた分の学習記録が保存されるようになりました
・ホームに「今日の10問」を追加:復習すべき問題と新しい問題をミックスして毎日出題します
・「合格力スコア」を追加:定着度・網羅率・直近の成績から資格ごとの到達度を0-100で表示。復習しないと下がるので、試験日まで育てて守りましょう
・ホーム画面を整理:学習の続きにすぐ戻れるレイアウトになり、モード選択もわかりやすくなりました
・ゲスト利用からのアカウント連携がより簡単・確実になりました
・アプリの安定性を改善しました
App support
About the developer
MINATRY
support@skillstack.jp
3-9-408, SHIMIZUCHO
TONDABAYASHI, 大阪府 584-0034
Japan
+81 70-8469-6633