InterviewOS vs Dev60s

Stop memorizing. Start mastering. InterviewOS is your all-in-one interview preparation app built for Flutter and Swift developers. Whether you're preparing for your first junior role or aiming for a senior position, InterviewOS gives you everything you need — lessons, exercises, quizzes, and real interview questions — all in your pocket. **Pick your track. Start learning.** Choose Flutter/Dart or Swift/iOS as your main focus. All content adapts to your selection — from beginner fundamentals to advanced topics. Switch tracks anytime. **Duolingo-style exercises** No boring walls of text. No typing long code. Just quick, tap-based challenges you can crush in 30 seconds: • Multiple choice questions • Fill-in-the-blank with word banks • Drag-to-reorder code lines • Spot-the-bug challenges • Swipe true or false • Match-the-pairs **500+ interview questions** Real questions asked at real companies. Organized by topic and difficulty — from junior to senior level. Each question comes with a detailed model answer, follow-up questions, and common mistakes to avoid. **General programming too** Not just framework-specific. InterviewOS covers REST APIs, WebSockets, design patterns, SOLID principles, data structures, Git, system design, security, and more — the topics every interviewer asks about. **Track your progress** Earn XP, level up from Junior Dev to Principal Dev, maintain your daily streak, and unlock achievements. See exactly where you stand on every topic. **100% free. No ads. No paywalls.** Every lesson, every exercise, every question — completely unlocked from day one. No subscriptions. No in-app purchases. No ads. Built by a developer, for developers. **Works offline** No internet? No problem. All content is available offline so you can practice on the subway, on a plane, or anywhere. Download InterviewOS and start preparing for the job you deserve.

Dev60s: Master Technical Interviews in 60 Seconds Sharpen your coding interview skills with Dev60s, the ultimate practice app for aspiring iOS developers and software engineers. Whether you're preparing for your dream job at Apple, Google, or any top tech company, Dev60s helps you master the fundamentals through quick, focused practice sessions. KEY FEATURES - 60-Second Challenges: Time-boxed questions that simulate real interview pressure - Comprehensive Coverage: Practice Swift, iOS development, computer science fundamentals, algorithms, and data structures - Adaptive Difficulty: Choose from Easy, Normal, or Hard levels to match your skill level - Flexible Sessions: Customize your practice with 20, 30, or 40 questions per session - Instant Feedback: Get detailed explanations for every answer to learn from mistakes - Premium Design: Enjoy a beautiful, Apple-inspired interface that makes learning enjoyable - Progress Tracking: Monitor your performance and identify areas for improvement - Haptic Feedback: Enhanced tactile experience for better engagement WHAT YOU'LL PRACTICE - Swift Language Fundamentals: Closures, optionals, protocols, generics, concurrency, and more - iOS Development: SwiftUI, UIKit, memory management, and iOS best practices - Computer Science: Data structures, algorithms, system design, and fundamental CS concepts - Problem-Solving: Logical thinking and coding patterns used in technical interviews WHY DEV60S? Technical interviews are challenging, and preparation is key. Dev60s helps you build confidence through regular practice, improve problem-solving speed and accuracy, master the concepts most commonly tested in interviews, learn from detailed explanations when you make mistakes, and track your progress over time. Perfect for job seekers preparing for technical interviews, students learning iOS development, developers looking to refresh core concepts, and anyone preparing for coding challenges and interviews. Start your journey to interview success today. Download Dev60s and practice smarter, not harder. Questions? Feedback? Contact us through the support link in the app.