Comparison

DevPrep vs StackReady

Price, ratings, monetisation and update history for both apps, side by side — 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? • AI GRADING ENGINE: Our local vector-based AI analyzes your speech for technical accuracy, logic, and clarity. Get a score (0-100) instantly. • PRIVACY & FAST: All grading happens securely on your device. Your voice recording is processed locally. • 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

StackReady

Practice technical interviews with AI-generated questions and instant feedback. Prepare for various developer roles and difficulty levels, tracking your progress and identifying areas for improvement. Offers free daily sessions and an optional Pro subscription for unlimited access.

Highlights
  • AI-generated interview questions
  • Voice and text answer input
  • Instant AI grading and feedback
  • Progress tracking and score trends
  • Role and difficulty level customization
  • Session history and achievements
Features
Read full description

Ace your next tech interview with StackReady the AI-powered practice app built specifically for developers. Whether you're preparing for Java Backend, iOS, React, Angular, Python, Golang, System Design, or Behavioral interviews, StackReady generates realistic questions, evaluates your answers, and provides instant feedback just like a real interviewer. PRACTICE SMARTER · AI-generated questions tailored to your role and difficulty level · Answer by voice or text, just like a real interview · Get instant AI grading with a score, grade, strengths, and improvement tips · Retry questions to beat your score and track your improvement · Skip difficult questions and review the ideal answer · Like or dislike questions to track what’s useful · Practice without daily session limits TRACK YOUR PROGRESS · Review your complete session history, scores, and grades · Follow score trends over time with your progress dashboard · Build a consistent practice habit with streak tracking · See your strongest and weakest roles at a glance · Unlock 13 achievements across streaks, scores, and milestones · Share session results and achievements as branded cards CREATE PERSONALIZED STUDY NOTES · Turn weak areas into focused study material · Review key concepts and code snippets · Reinforce your knowledge with personalized quizzes · Generate study notes from any completed session BUILT FOR DEVELOPERS · Java Backend · iOS Dev · React · Angular · Python · Golang · System Design · Behavioral · Junior, Mid-Level, and Senior difficulty levels · Avoid repeated questions—StackReady remembers what you’ve already practiced · No account required StackReady is a practice tool and is not a substitute for interview preparation with peers, mentors, or professional coaches. Terms of Use: https://tessbuild.com/stackready/terms.html Privacy Policy: https://tessbuild.com/stackready/privacy.html

Screenshots

DevPrep4 screens
StackReady4 screens

Verdict

The call

The clearest difference is update cadence: DevPrep at every 2 days against StackReady's monthly. DevPrep also leads on iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DevPrep sells 5 one-off in-app purchases and StackReady sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

DevPrep ships an update every 2 days, StackReady monthly. The most recent releases landed on September 24, 2026 and July 29, 2026 respectively.

Scorecard2 real differences · 7 level
DevPrep versus StackReady: the parameters behind the verdict, then further details
ParameterDevPrepStackReady
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 days — betterMonthly
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.6
Further details — not scored
Size149 MB1 MB
Age rating4+4+
DeveloperThieu KhueTesfaye Chru

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
2 purchases

StackReady

Subscriptions2
  • StackReady Pro7 Days trial$4.991 Month
  • StackReady Pro7 Days trial$29.991 Year

Questions

Is DevPrep free?
DevPrep is free to download, with in-app purchases available.
Is StackReady free?
StackReady is free to download, with in-app purchases available.
Do DevPrep or StackReady have ads?
Neither DevPrep nor StackReady shows ads.
Which is updated more often, DevPrep or StackReady?
DevPrep ships an update every 2 days, and StackReady monthly. Most recently, DevPrep was updated on September 24, 2026 and StackReady on July 29, 2026.

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