Comparison

DevPrep vs Tech Interview Prep

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

DevPrep

Features
Read full description

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? โ€ข AI GRADING ENGINE: Our local vector-based AI analyzes your speech for technical accuracy, logic, and clarity. Get a score (0-100) instantly. โ€ข PRIVACY & FAST: All grading happens securely on your device. Your voice recording is processed locally. โ€ข 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).

About

Tech Interview Prep

Features
Read full description

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 โ€ข Data Structures: Arrays, Linked Lists, Trees, Graphs, Heaps, Hash Tables โ€ข Algorithms: Sorting, Searching, Dynamic Programming, Recursion, Backtracking โ€ข 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.

Screenshots

DevPrep4 screens
Tech Interview Prep4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. DevPrep sells 5 one-off in-app purchases. Tech Interview Prep asks for nothing beyond the download.

UpkeepUpdate frequency

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.

Scorecard2 real differences ยท 4 level
DevPrep versus Tech Interview Prep: the parameters behind the verdict, then further details
ParameterDevPrepTech Interview Prep
PriceFreeFree
Update frequencyEvery 2 daysDaily โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details โ€” not scored
Size149 MB25 MB
Age rating4+17+
DeveloperThieu KhueAman Navani

In-app purchases

5 purchases

DevPrep

One-time5
  • Backend Scale pack$9.99
  • Data Structure & Algorithms pack$9.99
  • System Design pack$9.99
Show 2 more
  • Frontend Engineering pack$9.99
  • Unlock all Pro Packs$29.99
None

Tech Interview Prep

No in-app purchases

Questions

Is DevPrep free?
DevPrep is free to download, with in-app purchases available.
Is Tech Interview Prep free?
Tech Interview Prep is free to download, with no in-app purchases.
Do DevPrep or Tech Interview Prep have ads?
Neither DevPrep nor Tech Interview Prep shows ads.
Which is updated more often, DevPrep or Tech Interview Prep?
DevPrep ships an update every 2 days, and Tech Interview Prep daily. Most recently, DevPrep was updated on September 24, 2026 and Tech Interview Prep on September 7, 2026.

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