Comparison

DevStreak vs AI ML Prep

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

Head to head
About

DevStreak

Features
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DevStreak is a daily coding quiz and interview preparation app designed for developers who want to stay sharp, disciplined, and job-ready. Every day, you can solve carefully selected programming questions from multiple languages and difficulty levels. Whether you are a student, junior developer, or preparing for technical interviews, DevStreak helps you build consistency and confidence through daily practice. Languages include Swift, Java, Python and JavaScript Questions are grouped by difficulty levels: -Easy for fundamentals -Medium for problem solving -Hard for interview-level challenges Free users can answer unlimited number of daily questions. With a premium subscription, you unlock full access to exclusive interview questions. Key Features: -Daily coding questions -Multiple programming languages -Easy, medium, and hard difficulty levels -Interview preparation questions -Streak system to build consistency -Progress tracking -Clean and focused learning experience DevStreak is built to help you improve a little every day. Consistency beats motivation, and DevStreak keeps you consistent. Term of Use: https://www.notion.so/Terms-of-Use-DevStreak-2dfee2f85c3180b498f4e0c462a0cf09 Privacy Policy: https://www.notion.so/Privacy-Policy-DevStreak-2dfee2f85c3180f09c9dc0b506bed851 Help and Support: https://www.notion.so/Support-DevStreak-2dfee2f85c3180c4bf66e6866f783245

About

AI ML Prep

Features
Read full description

Ace your AI and Machine Learning system design interviews with 226 questions used at top tech companies, including Google, Meta, Amazon, and more. Each question includes a structured expert answer, skill tags, and a 5-dimension rubric so you know exactly what interviewers look for: - Problem Framing - Technical Depth - System Thinking - Communication - Tradeoff Awareness Domains covered: - Recommendation Systems - NLP, LLMs, and Generative AI - Search and Ranking - Computer Vision - MLOps and Infrastructure - Fraud and Anomaly Detection - Ads and Click Prediction - Reinforcement Learning and Decision Systems - AI Agents and Content Safety How it works: 1. Get a daily question and build your streak 2. Think through your answer, then tap to reveal the expert answer 3. Record your answer with voice and score yourself on each rubric dimension 4. Mark questions as mastered as you improve Mock Interviews (Pro): Simulate a real ML system design interview with: - Quick Fire (15 minutes) - Standard Round (45 minutes) - Full Loop (90 minutes) You can focus on a specific domain or choose a random mix. Free tier: The first 4 easy questions in each domain are free. No time limit and no account required. Pro subscription: Unlock all 226 questions across all difficulty levels, plus: - Mock interviews - Company-specific filters - Voice practice recording Monthly and yearly plans are available. Built for ML engineers, data scientists, AI/LLM engineers, and computer science students preparing for FAANG and AI-first companies. Privacy Policy: https://lemon-tea-ai.github.io/aiml-interview-prep-legal/privacy/ Terms and Conditions: https://lemon-tea-ai.github.io/aiml-interview-prep-legal/terms/

Screenshots

DevStreak4 screens
AI ML Prep4 screens

Verdict

The call

DevStreak and AI ML Prep are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. DevStreak sells 2 in-app purchases, starting at $2.99 per month and AI ML Prep sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
DevStreak versus AI ML Prep: the parameters behind the verdict, then further details
ParameterDevStreakAI ML Prep
PriceFreeFree
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 โ€” better
Further details โ€” not scored
Size20 MB5 MB
Age rating4+4+
DeveloperAHAD KAGAN KAPLANKe Zhu

In-app purchases

2 purchases

DevStreak

Subscriptions2
  • Monthly Premium$2.991 Month
  • Yearly Premium$19.991 Year
2 purchases

AI ML Prep

Subscriptions2
  • AI ML Prep Pro - Monthly$9.991 Month
  • AI ML Prep Pro - Yearly$99.991 Year

Questions

Is DevStreak free?
DevStreak is free to download, with in-app purchases available.
Is AI ML Prep free?
AI ML Prep is free to download, with in-app purchases available.
Do DevStreak or AI ML Prep have ads?
Neither DevStreak nor AI ML Prep shows ads.

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