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 preparation app specifically designed for "spare time" during commutes, breaks, and before bed.
"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 and guides you to success via the shortest route.
Start learning now without registration.
You can create an account after you like it.
■ 3 Reasons Why You Can "Pass" in Spare Time
【1. Start with just one question, immediately after opening】
Restart learning the moment you open it, 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 tackle 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 a mistake"]
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 time.
■ Supports a wide range of IT certifications
You can prepare for multiple certifications with a single app.
There's no need to buy study materials for each certification.
[National Certifications (Information Technology Engineer Examination)]
・IT Passport / Fundamental Information Technology Engineer / Applied Information Technology Engineer
・Information Security Management
・Network Specialist (NW) / Database Specialist (DB) / Information Security Support Specialist (SC)
[Vendor Certifications]
・AWS Certification
・Microsoft AZ-900
・Cisco CCNA
・LPIC Level 1-3 / LinuC Level 1-4
■ Fully supports AWS certifications
We also provide comprehensive support for AWS certifications, which are in high demand for cloud services.
【Foundational (Completely Free)】
• AWS Cloud Practitioner (CLF)
• AWS Certified AI Practitioner (AIF)
【Associate】
• Solutions Architect Associate (SAA)
• Developer Associate (DVA)
• SOA / DEA / MLA
【Professional / Specialty】
SAP, DOP, ANS, MLS, SCS
CLF and AIF are completely free.
You can start by building a strong foundation before stepping up to Associate and beyond.
■ Recommended for:
• Busy working professionals who can't find dedicated study time
• Those who want to study efficiently using commutes and spare time
• Those who can't stick with thick textbooks
• 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
【Past Exam Questions & Subject-Specific Practice】
Practice a wealth of questions categorized by subject and year.
Learn quickly during your spare time.
【AI Weakness Analysis】
AI analyzes your answer history to instantly identify your weak areas.
This allows you to use your limited time efficiently.
【Today's Recommendation】
Based on your learning progress, AI suggests problems you should solve today.
【Ask the AI】
Ask the AI questions you don't understand. It will explain why that answer is correct, including related knowledge.
【AI Essay Scoring】
AI also scores and provides feedback on essay questions.
This allows you to practice in the actual exam format.
【Mock Exam】
Check your abilities with a mock exam that closely resembles the real thing.
It's also ideal for practicing time management.
【Problems to Review】
Review difficult problems and problems you haven't yet mastered.
This prevents you from repeating the same mistakes.
【Flashcards】
Quickly check vocabulary during your free time.
【Learning Continuation Support】
Records consecutive learning days and sends reminder notifications to support your daily learning habits.
■ Pricing Plans
【Free】
・All AWS Foundational (CLF / AIF) content
・Free access to the first set of practice questions for each certification
・AI function (5 credits per month, 10 credits for the first month)
【Premium Monthly (¥980/month)】
・All certifications and practice questions unlocked
・Unlimited use of mock exams and filtered learning
・80 AI function credits per month
【Premium Annual (¥9,800/year)】
・In addition to the monthly 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 with device changes or reinstallation)
・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 preparation app specifically designed for "spare time" during commutes, breaks, and before bed.
"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 and guides you to success via the shortest route.
Start learning now without registration.
You can create an account after you like it.
■ 3 Reasons Why You Can "Pass" in Spare Time
【1. Start with just one question, immediately after opening】
Restart learning the moment you open it, 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 tackle 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 a mistake"]
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 time.
■ Supports a wide range of IT certifications
You can prepare for multiple certifications with a single app.
There's no need to buy study materials for each certification.
[National Certifications (Information Technology Engineer Examination)]
・IT Passport / Fundamental Information Technology Engineer / Applied Information Technology Engineer
・Information Security Management
・Network Specialist (NW) / Database Specialist (DB) / Information Security Support Specialist (SC)
[Vendor Certifications]
・AWS Certification
・Microsoft AZ-900
・Cisco CCNA
・LPIC Level 1-3 / LinuC Level 1-4
■ Fully supports AWS certifications
We also provide comprehensive support for AWS certifications, which are in high demand for cloud services.
【Foundational (Completely Free)】
• AWS Cloud Practitioner (CLF)
• AWS Certified AI Practitioner (AIF)
【Associate】
• Solutions Architect Associate (SAA)
• Developer Associate (DVA)
• SOA / DEA / MLA
【Professional / Specialty】
SAP, DOP, ANS, MLS, SCS
CLF and AIF are completely free.
You can start by building a strong foundation before stepping up to Associate and beyond.
■ Recommended for:
• Busy working professionals who can't find dedicated study time
• Those who want to study efficiently using commutes and spare time
• Those who can't stick with thick textbooks
• 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
【Past Exam Questions & Subject-Specific Practice】
Practice a wealth of questions categorized by subject and year.
Learn quickly during your spare time.
【AI Weakness Analysis】
AI analyzes your answer history to instantly identify your weak areas.
This allows you to use your limited time efficiently.
【Today's Recommendation】
Based on your learning progress, AI suggests problems you should solve today.
【Ask the AI】
Ask the AI questions you don't understand. It will explain why that answer is correct, including related knowledge.
【AI Essay Scoring】
AI also scores and provides feedback on essay questions.
This allows you to practice in the actual exam format.
【Mock Exam】
Check your abilities with a mock exam that closely resembles the real thing.
It's also ideal for practicing time management.
【Problems to Review】
Review difficult problems and problems you haven't yet mastered.
This prevents you from repeating the same mistakes.
【Flashcards】
Quickly check vocabulary during your free time.
【Learning Continuation Support】
Records consecutive learning days and sends reminder notifications to support your daily learning habits.
■ Pricing Plans
【Free】
・All AWS Foundational (CLF / AIF) content
・Free access to the first set of practice questions for each certification
・AI function (5 credits per month, 10 credits for the first month)
【Premium Monthly (¥980/month)】
・All certifications and practice questions unlocked
・Unlimited use of mock exams and filtered learning
・80 AI function credits per month
【Premium Annual (¥9,800/year)】
・In addition to the monthly 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 with device changes or reinstallation)
・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
SkillStack アップデート
・友達招待でおトクな紹介特典を追加
・各資格の「問題集①」を無料開放
・定着度や分野別成績を見える化し、最適な復習タイミングをお知らせ
・問題や解説をAIに質問できる機能を追加
・学習画面を刷新（前の問題に戻れる「問題一覧」／正誤がひと目で／図表をタップ拡大）
・多数の不具合修正と安定性向上
・友達招待でおトクな紹介特典を追加
・各資格の「問題集①」を無料開放
・定着度や分野別成績を見える化し、最適な復習タイミングをお知らせ
・問題や解説をAIに質問できる機能を追加
・学習画面を刷新（前の問題に戻れる「問題一覧」／正誤がひと目で／図表をタップ拡大）
・多数の不具合修正と安定性向上
App support
About the developer
MINATRY
support@skillstack.jp
3-9-408, SHIMIZUCHO
TONDABAYASHI, 大阪府 584-0034
Japan
+81 70-8469-6633