---
title: "SD Primer - Reviews, Revenue and Downloads in India | Apple App Store"
description: "Think like a staff engineer — five minutes a day.  SD Primer turns system design mastery into a daily habit. Answer today's questions, debug a broken architecture with your hands, and build the instin"
---

# SD Primer — India
> System Design Primer

![SD Primer App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/79/2b/b4/792bb425-6a45-4231-c4c9-bf56b1d25a1e/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Ernesto Hilvano](https://apptail.io/developer/ernesto-hilvano-iyEg)
**Category:** Education
**Rating:** N/A (0 ratings)
**Price:** Free
**Bundle ID:** com.sdprimer.app
**Store:** Apple App Store
**Country:** India
**Version:** 2.0.1 (released 2026-07-19)
**Original Release:** 2026-01-21
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/in/app/app/id6758010557)
**AppTail Page:** [https://apptail.io/app/sd-primer-dAcA/india](https://apptail.io/app/sd-primer-dAcA/india)

## SD Primer Description
Think like a staff engineer — five minutes a day.

SD Primer turns system design mastery into a daily habit. Answer today's questions, debug a broken architecture with your hands, and build the instincts that tech interviews (and real jobs) demand.

YOUR DAILY RITUAL
• Daily Quiz — five sharp multiple-choice questions on scalability, databases, caching, queues, and trade-offs, with clear explanations for every answer
• Focus Practice — we detect your weakest topics and serve extra reps exactly where you need them
• Streaks, XP, and levels that make consistency effortless

HANDS-ON ARCHITECTURE LABS
Don't just read about system design — fix it. Each lab drops you into a live incident: drag components onto the canvas, wire the fix, defend your reasoning, and get scored with strengths and trade-offs.

LEARN AI & ML FROM FIRST PRINCIPLES
A structured 64-lesson course, one daily read at a time: from the origins of AI through neural networks, transformers, and how to actually use LLMs well — written for software engineers, no math degree required.

AND EVERY DAY
• Coding pattern drills — name the algorithm behind the problem
• Workplace mastery lessons — the soft skills that get engineers promoted
• Curated engineering news and daily tips
• Your progress, visualized: topic strength, consistency calendar, achievements

SD PRIMER PRO
Unlock custom quizzes, labs, and pattern sessions tuned to your goals, plus higher daily limits. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the period; manage anytime in your App Store account settings.

Privacy Policy: 
Terms of Use: 

Start today. Your future self at the whiteboard will thank you.

## SD Primer Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/0d/1c/f1/0d1cf11b-5531-ad3a-fe62-ae86e46076eb/03-incident-lab.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/6e/f1/f9/6ef1f9f2-99be-9cf3-9cfd-023202f65d5b/01-daily-ritual.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/bd/8a/50/bd8a50fd-a959-2ed1-a7df-232cc1a91a74/02-learn-by-doing.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/1a/9c/2f/1a9c2fb2-ea6e-e6af-495e-c9fa644d16b8/05-progress.png/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/0a/ed/35/0aed35b1-c6e1-6def-92df-605efdb439db/04-course.png/1284x2778.png)



## SD Primer In-App Purchases
| Item | Price |
|------|-------|
| SDPrimer Pro | ₹999.00 |



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## SD Primer Available In
- [Belgium](https://apptail.io/app/sd-primer-dAcA/belgium)
- [Belarus](https://apptail.io/app/sd-primer-dAcA/belarus)
- [Germany](https://apptail.io/app/sd-primer-dAcA/germany)
- [Greece](https://apptail.io/app/sd-primer-dAcA/greece)
- [India](https://apptail.io/app/sd-primer-dAcA/india)
- [Slovakia](https://apptail.io/app/sd-primer-dAcA/slovakia)
- [Ukraine](https://apptail.io/app/sd-primer-dAcA/ukraine)
- [United States](https://apptail.io/app/sd-primer-dAcA/united-states)

---

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