📚 Yadnyesh Rana's Digital Catalog

Level Up Your
Android Engineering Career

Highly curated developer resources, step-by-step cookbooks, and comprehensive interview databases designed to help you land your dream role, write better Kotlin, and design scalable apps.

Best Seller Updated

Android Interview Question Bank (2026 Edition)

Stop wasting hours browsing outdated blogs. Get instant access to **300 highly curated interview questions** and comprehensive, production-grade Kotlin answers covering Kotlin, Jetpack Compose, Coroutines, Flow, Hilt, Room, and App Performance.

300 Curated Q&As
Junior to Senior (L1–L3)
100% Kotlin Examples
₹199 One-time purchase / Lifetime updates
Browse 30 Samples Buy Handbook
Live Hot

Jetpack Compose Cookbook (Premium UI & Animations)

Accelerate your declarative UI development. Get instant access to **12 production-grade, highly optimized recipes** complete with copy-pasteable Kotlin code, detailed API deep dives, and beautiful visual design blueprints.

12 Premium Recipes
12 Visual UI Blueprints
60 FPS Animation Code
₹299 One-time purchase / Lifetime updates
Browse 2 Samples Buy Cookbook
New Release Premium

Android System Design & Architecture Playbook

Master high-scale Android system design. Get instant access to **12 advanced architectural playbooks** complete with interactive sequence flowcharts, step-by-step data flows, production-grade Kotlin blueprints (featuring Hilt wiring, Room entities/DAOs, and testing configurations), and deep-dive checklists.

12 Advanced Playbooks
Interactive Flowcharts
Senior & Lead (L2–L4) Focus
₹599 One-time purchase / Lifetime updates
Browse Samples Buy Playbook
New Release Hot

Android Performance Optimization & Profiling Playbook

Master high-end Android performance engineering. Get instant access to **12 advanced performance chapters** complete with vector flowcharts, manual heap dump analysis guides, JIT/AOT compiler deep dives, Compose compiler stability optimization, and custom benchmark testing scripts.

12 Performance Chapters
Systrace & Perfetto Analysis
Compose Stability Optimizations
₹699 One-time purchase / Lifetime updates
Browse Samples Buy Playbook
New Release Premium

Android Security, Hardening & Reverse Engineering Handbook

Master advanced mobile security engineering. Get instant access to **20 advanced security topics** complete with vector flowcharts, dynamic memory map checkers, Frida hooking detectors, SQLCipher database setups, and backend Play Integrity token verifiers.

20 Security Topics
Frida & Root Detection Logic
Play Integrity Attestation
₹799 One-time purchase / Lifetime updates
Browse Samples Buy Handbook
New Release Premium

Jetpack Compose Custom UI Masterclass

Master advanced custom graphics, drawing, gestures, and custom layouts in Compose. Get instant access to a **37-page print-ready handbook** complete with 12 high-fidelity geometry SVG diagrams, copy-pasteable Kotlin code blueprints (Bezier charts, dial knobs, joysticks, nested scroll connections), and release optimization checklists.

12 SVG Geometry Diagrams
10+ Kotlin Code Blueprints
120 FPS Drawing & GPU Cache
₹1,499 One-time purchase / Lifetime updates
Browse Samples Buy Handbook
New Release Hot

Modern Kotlin & Concurrency: Ultimate Interview Prep Blueprint

Master the concurrency loops and core Kotlin mechanics tested by top-tier tech companies. Get instant access to an **81-page playbook** with 55 senior-level questions, continuation Passing Style (CPS) state machine bytecode breakdowns, supervisor job hierarchies, reactive Flow buffer pipelines, virtual time testing, and a custom token-bucket rate limiter.

55 Advanced Q&As
81-Page Master Playbook
2-Hour Audio Study Companion
₹2,499 One-time purchase / Lifetime updates
Browse Samples Buy Playbook
YR

Yadnyesh Rana

Senior Android Engineer

About the Author

Hi, I'm Yadnyesh! I am a professional Android engineer with a passion for designing clean, high-performance mobile applications and mentoring other developers to excel in their careers.

These handbooks and cookbooks compile my years of industry experience solving complex bugs, passing high-bar technical interviews, and architecting systems. My goal is to write the most concise, code-heavy, and practical guides available for modern Android developers.

View my portfolio & projects