Syswise: System Design Prep
Daily drills for backend devs
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
A new question every day. Answer it, read why, close the app. Ten minutes keeps the concepts warm until the interview.
Answer one system design question a day. Read why the answer is right. Close the app.
Syswise is a question bank with a path running through it. You start on scalability basics and work forward: caching, queues, sharding, consistency. Each unit is a short session of multiple choice questions taken from real interview scenarios, and every question ends with a written explanation of the correct answer and of the ones you did not pick.
Sessions run about ten minutes. That is deliberate. Nobody learns distributed systems in a weekend, but you can keep the concepts warm until the interview.
WHAT IS INSIDE
A path with sections and checkpoints, so you always know what comes next.
Four practice modes: review your mistakes, drill your weakest topics, spaced cards that have come due, and a daily challenge.
A readiness score built from your own practice, broken down by average mastery, weakest quarter and topic coverage.
A streak, a daily goal and a league, if that is what gets you to open the app.
WHO IT IS FOR
Engineers with a system design round on the calendar. Also anyone who has been hand waving about caches and queues for years and would rather stop.
PREMIUM
Premium turns your weak areas into an ordered 7 day plan and lifts the session uptime limit. The path itself is free, and the uptime limit resets on its own if you would rather wait.
Premium is an auto-renewing subscription, offered weekly and annually. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless you turn off auto-renew at least 24 hours before the end of the current period. You can manage or cancel it in your Apple ID account settings.
Privacy policy: https://syswise.app/privacy-policy
Terms of Use (EULA): https://syswise.app/terms-of-use
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The app now launches more quickly, since it loads only your chosen language instead of every one at startup. The skill path screen scrolls more smoothly too, as it only renders what is visible on screen. We have also moved the animated counters off the main render loop, so the whole app feels snappier.
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
- Identifiers
- Usage Data
- Diagnostics
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 40.8 MB
- Category
- Education
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 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 Annual 199,99 lei
- Premium Weekly 29,99 lei
- 3000 Gems 49,99 lei
- 500 Gems 9,99 lei
- 1400 Gems 29,99 lei
- 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