Kotlin Cheatsheet 2025

🧠 Write Kotlin like a pro — fast, clean, confident.

This cheatsheet is your go-to quick reference for core Kotlin syntax, modern idioms, and interview-ready tips. Whether you’re reviewing before a technical screen, building your next Android app, or leveling up for a new role — this sheet is built to save time and sharpen your edge.

✅ What You’ll Get

🧩 Kotlin fundamentals — clean, concise, and up-to-date
⚙️ Common code patterns and best-practice examples
📌 Must-know tips for interviews and production-ready Kotlin
📄 PDF — printable, mobile-optimized, and easy to scan
📅 Updated for 2025

💡 Perfect for:

• Android devs reviewing before interviews
• Bootcamp or CS grads learning Kotlin
• Engineers switching from Java or other JVM languages
• Developers building apps with Jetpack Compose or Ktor
• Anyone who wants to code faster, cleaner, and smarter in Kotlin

🎯 Fast to read. Easy to use.
Designed for real-world Kotlin development.

📥 Instant PDF download — keep it on your desktop, in your repo, or on your phone.