Syswise: System Design Prep
Tech Interview & Mock Practice
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
New: daily and weekly quests that pay out gems, streak repair, and a countdown to your interview date. The annual plan now begins with a 7-day free trial.
Revise system design properly, a few minutes a day.
The system design interview is the one you can't cram for on the train in. Syswise breaks it into short daily sessions: one real design decision at a time, every answer explained, and a readiness score that tells you honestly how prepared you are.
For software engineers going for graduate roles, mid-level moves and senior positions, and for anyone who wants distributed systems to finally make sense.
FREE, NO ACCOUNT NEEDED TO START
• A structured path: 9 tracks, 48 topics and 144 skills (concepts, practice, checkpoints, case studies, estimation). Each step unlocks the next, and you earn crowns as you master a skill.
• A daily challenge and 5,000+ questions in 7 formats: multiple choice, ordering, matching, estimation, trade-offs, case studies and lessons.
• Every answer explained: why the right option works and why each wrong one falls short.
• Revision that sticks: your mistakes, your weak areas and spaced-repetition cards.
• An interview readiness score out of 100, broken down by topic.
• Worked case studies: design a URL shortener, a news feed and more.
• Weekly leagues from Bronze to Diamond, streaks with streak freezes and repair, and daily and weekly quests that pay out gems.
• A streak widget for your Home Screen and Lock Screen (iOS 17+).
• Track certificates to add to LinkedIn and your CV (signed-in accounts).
• Sign in with Apple, Google or email whenever you want to keep your progress.
• Interface in 30 languages, dark mode, iPhone and iPad.
PREMIUM
• Unlimited hearts (free accounts have 5, refilling over time).
• A 7-day readiness plan that counts down to your interview date.
• AI explains why your answer was wrong.
• One graded AI mock interview a day, marked on requirements, estimation, architecture, scaling and trade-offs, and communication. Mock interviews are part of paid plans and are not included during the free trial.
• Monthly gems.
Plans: weekly, monthly or annual; the annual plan begins with a 7-day free trial. Prices are shown in your local currency in the app before you buy. Payment is charged to your Apple ID. Subscriptions renew automatically unless turned off at least 24 hours before the end of the current period. Manage or cancel at any time in Settings > Apple ID.
Questions, explanations and case studies are in English, the language your interview will be in.
Terms of Use: https://syswise.app/terms-of-use
Privacy Policy: https://syswise.app/privacy-policy
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
What's new in 1.1.3:
• Quests: daily and weekly quests that pay out gems.
• Streak repair: lost your streak? Win it back within two days.
• Interview date: set it and see the countdown. With Premium, your plan counts down to the day itself.
• Invite friends: you both receive gems once they've settled in.
• A streak widget for your Home Screen and Lock Screen.
• Track certificates to add to LinkedIn.
• Share your streak or league card.
• Premium: AI explains why your answer was wrong.
• The annual plan now begins with a 7-day free trial, and there's a new monthly plan.
The developer, Cengizhan Hakan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
- Usage Data
- Diagnostics
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 67.4 MB
- Category
- Education
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - iPad
Requires iPadOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 29 more
- English, Arabic, Bengali, Czech, Dutch, French, German, Greek, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
13+
- 13+
- Frequent
Contests
- In-App Purchases
Yes
- Premium Monthly 9,99 €
- Premium Annual 44,99 €
- Premium Weekly 5,99 €
- 3000 Gems 9,99 €
- 500 Gems 1,99 €
- 1400 Gems 5,99 €
- Provider
Cengizhan Hakan
- Cengizhan Hakan has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
- Address
Leipziger Straße 47
Mitte, OG 25.02
10117 Berlin
Germany - Phone Number
+49 15208341657 - Email
cengizhanhakan3@gmail.com
- Copyright
- © 2026 Cengizhan Hakan