DevPrep vs Tech Interview Prep
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
DevPrep
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You have the coding skills, but can you explain them clearly under pressure? DevPrep is the Offline-First AI Interview Coach designed specifically for Software Engineers. Stop practicing in your head. Start speaking. DevPrep simulates the pressure of a real interview, records your answer, and uses an advanced on-device AI engine to grade your response against ideal technical answers. WHY DEVPREP? โข AI GRADING ENGINE: Our local vector-based AI analyzes your speech for technical accuracy, logic, and clarity. Get a score (0-100) instantly. โข PRIVACY & FAST: All grading happens securely on your device. Your voice recording is processed locally. โข ZERO FLUFF: 250+ curated questions from the current tech industry standards. 5 SPECIALIZED TRACKS: - SOFT SKILLS & LEADERSHIP - DATA STRUCTURES & ALGORITHMS (pro) - SYSTEM DESIGN ARCHITECT (pro) - MODERN FRONTEND ENGINEERING (pro) - BACKEND & DISTRIBUTED SYSTEMS (pro) FEATURES: - Realistic "Interviewer" Audio to simulate pressure. - "Silent Mode" for practicing on the go (multi-choice questions). - Local progress feature to track your mastery. - Offline-First architecture (Privacy focused).
Tech Interview Prep
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Master Data Structures, Algorithms, and System Design with DSA Prep โ the intuitive flashcard app designed for software engineering interview preparation. SWIPE TO LEARN Review 150+ essential topics using our simple swipe interface. Swipe right if you know it, left if you need more practice. It's that easy. WHAT'S COVERED โข Data Structures: Arrays, Linked Lists, Trees, Graphs, Heaps, Hash Tables โข Algorithms: Sorting, Searching, Dynamic Programming, Recursion, Backtracking โข System Design: Scalability, Load Balancing, Caching, Databases, Microservices TRACK YOUR PROGRESS See exactly where you stand. Track which topics you've mastered, which need review, and what's left to learn. BOOKMARK & REVISIT Save tricky topics for later. Your bookmarks sync across devices so you can study anywhere. CODE EXAMPLES Each topic includes practical code snippets to reinforce your understanding. STUDY ANYWHERE Your progress syncs to the cloud. Start on your phone, continue on your tablet โ your data follows you. Perfect for preparing for interviews at top tech companies. Whether you're a new grad or an experienced engineer, DSA Prep helps you review efficiently and build confidence. Download now and start prepping for your next tech interview.
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Verdict
The clearest difference is in-app purchases: Tech Interview Prep at none against DevPrep's 5. Tech Interview Prep also leads on update cadence (daily vs every 2 days). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. DevPrep sells 5 one-off in-app purchases. Tech Interview Prep asks for nothing beyond the download.
DevPrep ships an update every 2 days, Tech Interview Prep daily. The most recent releases landed on September 24, 2026 and September 7, 2026 respectively.
| Parameter | DevPrep | Tech Interview Prep |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | Daily โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details โ not scored | ||
| Size | 149 MB | 25 MB |
| Age rating | 4+ | 17+ |
| Developer | Thieu Khue | Aman Navani |
In-app purchases
DevPrep
- Backend Scale pack$9.99
- Data Structure & Algorithms pack$9.99
- System Design pack$9.99
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- Frontend Engineering pack$9.99
- Unlock all Pro Packs$29.99
Tech Interview Prep
No in-app purchases
Questions
Is DevPrep free?
Is Tech Interview Prep free?
Do DevPrep or Tech Interview Prep have ads?
Which is updated more often, DevPrep or Tech Interview Prep?
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