One unified platform for Frontend, Backend, Core CS, System Design & Curated Technical Interview Screenings. 3,750+ questions graded strictly from Foundations to Internals. Lifetime access from ₹299, no subscription.
Curated screening questions across Node.js, JavaScript & React 19 with verified solutions and 160+ official documentation citations.
Curated, complete interview syllabus specifically designed for role-specific interview loops.
Master frontend engineering interviews. Comprehensive questions covering JavaScript, TypeScript, React, Next.j…
Prepare for backend developer interviews. In-depth questions on Node.js, Express, Java, Spring Boot, Python, S…
Crush full-stack developer interviews. Complete coverage across React, Node.js, TypeScript, PostgreSQL, Docker…
Ace SDE-1, SDE-2, and SDE-3 interviews at top tech companies. Comprehensive coverage of Operating Systems, DBM…
No generic question dumps. Every question is calibrated against actual interview stages.
First-round phone screens, core terminology, execution model, fundamentals, and syntax precision.
Production patterns, state synchronization, caching layers, error recovery, and framework nuances.
Engine internals, memory layout, lock contention, distributed consensus, low-level OS primitives.
Direct access to every technology curriculum with 5 free unlocked questions per difficulty level.
60 Total Questions
150 Total Questions
150 Total Questions
171 Total Questions
171 Total Questions
163 Total Questions
60 Total Questions
171 Total Questions
159 Total Questions
150 Total Questions
159 Total Questions
150 Total Questions
171 Total Questions
171 Total Questions
150 Total Questions
171 Total Questions
171 Total Questions
75 Total Questions
60 Total Questions
45 Total Questions
171 Total Questions
We never ask for payment upfront. Read 5 full questions per difficulty across React, Node.js, SQL, System Design, and 23 other technologies before deciding.
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600+ Curated Data Structure & Algorithm problems across 10 focused tracks.
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Full real-world technical interview codex PLUS complete DSA Problem Codex.
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| DIMENSION | DEVPREP | GENERAL ARTICLES (GFG) | ALGO SITES (LeetCode) |
|---|---|---|---|
| Curated Model Answers | ✓ Production-Grade Code | Crowd-sourced / Inconsistent | User Forum Submissions |
| Calibration Levels | 3 Rigorous Degrees (E/M/H) | Uncalibrated Lists | Algorithmic Only |
| Framework Internals | Deep (Fiber, JVM, libuv, etc.) | Superficial Syntax | None (Algorithms only) |
| System Design (HLD & LLD) | Included in Core Access | Fragmented Articles | Separate Paid Upsell |
| Pricing Model | One-Time Lifetime | Ad-heavy or Free/Messy | $35+/mo Recurring |
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Every visitor can read the first 5 questions of every single difficulty level across all 27+ technologies for free — that is over 400+ complete model answers with no account or card required. The one-time lifetime key unlocks all 3,600+ questions, full implementation code folios, and all future technology additions forever.
Yes. Exactly one single payment localized to your country. There are no recurring charges, no monthly renewals, and no hidden fees. Once enrolled, your account has permanent lifetime access.
Content is structured into three clear degrees per technology: Easy (Foundations, core definitions, and screening questions), Medium (Practical patterns, edge cases, and real-world mechanisms), and Hard (Runtime internals, architecture, memory models, and concurrency).
Yes. DevPrep includes dedicated, comprehensive tracks for High-Level Design (HLD: scalability, load balancing, caching, sharding, distributed transactions) and Low-Level Design (LLD: SOLID principles, design patterns, clean architecture).
LeetCode focuses strictly on Data Structures & Algorithms (DSA). General sites like GFG have outdated, crowd-sourced, and uncurated articles. DevPrep focuses on technical engineering domain knowledge — the exact framework internals, architecture, and language mechanics interviewers actually test.
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Because all 27+ technologies include 400+ free unlocked questions to review before purchasing, and full lifetime access is permanently provisioned immediately upon payment, all sales are final with a strict no-refund policy. Since this is a one-time purchase, there are no ongoing subscriptions to cancel.
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