InterviewOS vs Interviews

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.

Interviews is the daily workout for anyone preparing for a mobile developer technical interview. Five questions a day, two minutes, and a path that grows with you. FOUR TRACKS, EACH ON ITS OWN Swift, UIKit, Kotlin and Flutter. Turn on one or all of them: each has its own topics, in the order it makes sense to study them. You start from the fundamentals of the language, never halfway through. THE DAILY QUIZ Five questions tuned to your level, drawn only from the topics you've already unlocked. Answer, read the explanation, keep your streak alive. XP AND RANKS From Junior I all the way to Staff. Every correct answer is worth 10, 20 or 30 XP depending on difficulty, and as your rank goes up the mid and senior topics open up. REVIEW WITH REAL ANSWERS Short lessons with annotated code and, above all, the answer to actually give out loud to the person interviewing you. CORRECTIONS THAT EXPLAIN When you get one wrong you don't just see the right answer: you read why yours was wrong. Your mistakes stay set aside until you fix them. SMART REMINDERS One notification at the time you choose, only on days you haven't done the quiz yet. Never one more. OFFLINE, NO ACCOUNT Interviews works on the subway as well as on the couch. No sign-up, no ads, no tracking: your progress stays on your iPhone. Available in English and Italian.