davthecoder's profile picture. 🚀 Mobile App Developer
💼 Freelance | Open for projects
🛠️ Turning ideas into polished, user-friendly apps
🌟 Specializing in Android Native, KMP development

David Cruz

@davthecoder

🚀 Mobile App Developer 💼 Freelance | Open for projects 🛠️ Turning ideas into polished, user-friendly apps 🌟 Specializing in Android Native, KMP development

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Integrated Zig with Android via JNI and got 3-5x performance gains 🚀 ✅ Memory safety without GC ✅ Simple cross-compilation ✅ 60% less memory than C++ Perfect for audio, gaming, or compute-heavy Android apps. Full guide with code 👇 davthecoder.com/blog/superchar… #AndroidDev

davthecoder.com

Zig + Android JNI: High-Performance Native Integration Guide

Complete guide to integrating Zig with Android via JNI. Build high-performance native modules with memory safety, automated Gradle builds, and real examples.


Kotlin for UX, Rust for hot loops. I moved SMA/EMA/RSI/MACD to Rust and kept Android charts at 60 FPS—even with 1k+ candles in realtime. Benchmarks + JNI patterns inside: medium.com/p/building-a-h… #Android #Kotlin #Rust


David Cruz reposted

Introducing Claude Sonnet 4.5—the best coding model in the world. It's the strongest model for building complex agents. It's the best model at using computers. And it shows substantial gains on tests of reasoning and math.

claudeai's tweet image. Introducing Claude Sonnet 4.5—the best coding model in the world.

It's the strongest model for building complex agents. It's the best model at using computers. And it shows substantial gains on tests of reasoning and math.

Want to use C++ in your Swift apps? 🤔 Get the performance of C++ with the beauty of Swift. ⚡️ My new tutorial shows you how to do it for iOS & tvOS. Check it out! 👇 davthecoder.com/blog/how-to-us… #Swift #iOS #CPlusPlus #CodingTutorial


David Cruz reposted

Spain is mourning Charlie as well.

From Revuelta

David Cruz reposted
attackdogX's tweet image.

My heart is broken. Charlie Kirk's voice, courage, and faith touched millions – but most of all, he was a loving husband and father. Thank you, Charlie, for standing firm in truth. Prayers for Erika, the kids, and all who mourn. Revelation 14:13


Gracias a mi querido amigo @ankorinclan por compartir mi historia. ❤️ facebook.com/share/p/17CD7z…


I have just published a new blog post! In this post, I break down how to solve the classic "Two Sum" problem from LeetCode using Kotlin. I cover two alternatives: ↪️ Brute Force ↪️ One-Pass HashMap > davthecoder.com/blog/how-to-so… #Kotlin #LeetCode #DataStructures #Algorithms


I'm thrilled to announce the launch of my new blog post, the first about Data Structures solving technical interview problems. davthecoder.com/blog/how-to-so… #Kotlin #LeetCode #LRUCache #Coding #SoftwareDevelopment #NewBlog


David Cruz reposted

🚀 @duolingo ships weekly on iOS and Android to 40M+ daily active users – and KMP is becoming key to moving fast. 🎥 In “Duolingo + KMP: A Case Study in Developer Productivity”, the team shares their journey, the lessons learned, and what’s next. kotl.in/kmp-plus-duoli…


A must-watch presentation. 🎉

"Rich Errors in Kotlin” – the KotlinConf’25 talk by @MZarechenskiy is now live on our YouTube channel! 🎉📺 Discover how Kotlin’s nullability model can be generalized to restricted union types for better error handling. 👉 Watch the full video: kotl.in/richerrors



I just brought my copy of "Mobile System design" by @manuelvicnt amzn.eu/d/7pFF4H2

🚨 It’s here! The Mobile System Design Interview book is officially out! 📘✨ Now available on Amazon worldwide. Built for mobile engineers prepping for interviews, tech leads sharpening architecture skills, or industry leaders curious about mobile internals.

manuelvicnt's tweet image. 🚨 It’s here! The Mobile System Design Interview book is officially out! 📘✨ Now available on Amazon worldwide.

Built for mobile engineers prepping for interviews, tech leads sharpening architecture skills, or industry leaders curious about mobile internals.
manuelvicnt's tweet image. 🚨 It’s here! The Mobile System Design Interview book is officially out! 📘✨ Now available on Amazon worldwide.

Built for mobile engineers prepping for interviews, tech leads sharpening architecture skills, or industry leaders curious about mobile internals.


David Cruz reposted

⚠️ Attention Kotlin Multiplatform developers! If you’re using Kotlin with Xcode, please hold off on updating to Xcode 16.3 until Kotlin 2.1.21 is released. The upcoming Kotlin update includes essential compatibility fixes. Thanks for your patience!


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