SD Primer
System Design Primer
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Master system design interviews in just 5 minutes a day. Daily
quizzes, incident labs, coding patterns & curated tech news - built
for engineers who want to level up.
SD Primer is the daily habit that prepares you for system design
interviews and levels up your engineering career.
Every day, you get a fresh set of system design questions, real-world
incident challenges, and coding pattern exercises - designed to
build deep, lasting knowledge through spaced repetition.
DAILY PRACTICE, REAL RESULTS
- 5 daily system design MCQs with detailed explanations
- Real-world incident lab challenges based on actual outages
- Coding pattern recognition exercises across all difficulty levels
- Spaced repetition ensures you retain what you learn
STAY SHARP, STAY INFORMED
- Curated daily tech news for software engineers
- Daily tips covering architecture, scalability, and trade-offs
- Workplace mastery lessons for career growth
TRACK YOUR PROGRESS
- Streaks, XP, and levels to keep you motivated
- Topic strength breakdown to see where you excel
- Full attempt history with performance analytics
PRO FEATURES
- Customize quizzes, labs, and patterns to target your weak areas
- Adjust daily question count and difficulty to match your level
- Personalized news feed tailored to your career goals
- Priority feature requests to shape the app's roadmap
Whether you're preparing for interviews or building your system
design fundamentals, SD Primer turns idle minutes into
career-changing knowledge.
Download now and start your daily system design habit.
By using this app, you agree to Apple's Standard License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Coding pattern recognition
- System design lab
- Improve home (added news, did you know, daily workplace mastery)
- added new resource for coding interview and takehome project.
- added support for feature requests
- paywall for user who wants customized learning
The developer, Ernesto Hilvano, 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:
- Contact Info
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ernesto Hilvano
- Size
- 45.7 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
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SDPrimer Pro $99.99
- SDPrimer Pro $9.99
- Copyright
- © Ernest Hilvano