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Running a 1.5B-Parameter LLM Entirely On-Device for Mental Health — The NilaMind Architecture

How I built a mental health companion that never connects to the internet, and why the most important safety decisions have nothing to do with the AI.…

Versioned Builds Are Back, With Master Builds For Fast Verification

Versioned builds are back. What is Codename One? Codename One is an open-source framework for building native iOS, Android, desktop, and web apps from…

Post-quantum signing keys that never leave the Secure Enclave

iOS 26 quietly added something I had been waiting for: the Secure Enclave can now hold ML-DSA keys. Not "the app does lattice math and stores a blob i…

One Tap, Public URL: Building an Android App for Secure Port Forwarding

As developers, we've all been there. You have a web server, API, dashboard, or IoT service running locally, and you need to share it with someone outs…

Commerce And Secrets Without An IAP Tax

Commerce is the easiest feature in this release to misunderstand, so the first sentence has to be blunt: What is Codename One? Codename One is an open…

The 16.67ms Race: Mastering Real-Time 60 FPS Video Segmentation on Android

Imagine you are building the next generation of Augmented Reality (AR) glasses or a professional-grade video editing tool for Android. The user holds …

Motion, Stylus, Trackpads And Foldables In The Core

For a long time, mobile meant a touch screen and a few platform-specific escape hatches. That is no longer enough. A Codename One app can run on phone…

Architecting Location-Based Automation Without Killing the Battery

Opening hook It happened during a quiet afternoon in the library. I was deep in a documentation sprint, and the only sound was the rhythmic tapping of…

OpenClaw Just Shipped an Animated Welcome & Android Image Previews

OpenClaw pushed 10 commits in the last 3 hours — headlining with a redesigned chat welcome screen and native Android image previews, alongside a wave …

I Got 9.9 Lower TTFT on a Real Android Phone by Reusing llama.cpp KV State

Local LLM inference has an expensive habit: It recomputes prefixes it has already seen. A system prompt. A reused RAG document. A few-shot block. A lo…

Stop Moving Pixels: Mastering Zero-Copy Image Processing for High-Performance Edge AI

You’ve spent months optimizing your neural network. You’ve pruned the weights, quantized to INT8, and selected the most efficient architecture for you…

How I Built an Informational Android App Website for Bangladeshi Users

Android users in Bangladesh often search for information about gaming apps, APK versions, installation steps, device compatibility, and local payment …

CarPlay And Android Auto From One Codename One API

Yesterday's release post was about the bigger business line we will not cross: no royalties on IAP, ads, commerce or app revenue. This post is about o…

Architecting a background-controlled sound manager that actually survives Doze mode

It happened during a lecture. I was sitting in the front row, taking notes on my tablet, when my phone started vibrating against the wooden desk. The …

Breaking the Abstraction Tax: Mastering Custom C++ Operations for High-Performance Edge AI on Android

In the modern Android ecosystem, we have become accustomed to the incredible productivity of Kotlin and the safety of the JVM. For standard applicatio…

More Surfaces, Same Deal: Cars, Sensors, Commerce, Video And Builds

Last week's release post was about funding open source without the bait and switch. This week's release tests that idea again, because two of the new …

[Android] Pray First — a prayer app that locks distracting apps until you pray (looking for beta testers)

I’ve been building a Christian prayer app called Pray First, and I’m looking for people to help test it before launch. The idea: instead of scrolling …

Architecting Location Based Automation without Killing Android Battery Life

It happened during a quiet afternoon at the library. I was deep into a debugging session when my phone suddenly blared a loud, upbeat notification rin…

Review: iodéOS offers a frictionless de-Googled Android experience

10 New Libraries for Fire TV

Last time I told you about how Gio and I built an AI harness to test React Native libraries on Fire TV . Now that hundreds of libraries are confirmed …

Google updates Android Bench with new LLMs, but Gemini still lags behind

Android Bench is evolving, and developers can help guide that process.

Testing In-App Chat and Customer Support Flows in Delivery Apps

The help button is the most important button in your delivery app that your QA team almost never clicks during regression. Every delivery app has an i…

Hello World! 👋 I'm Pablo, Android Dev & Creator of Aura Finance

Hi everyone! 👋 I’m Pablo Martín, a Mobile Engineer and Android Architect based in Spain. For over 5 years, I’ve been building, scaling, and leading na…

🔥 I Built an ESP32 Smart Bike Control System with an Android App (Open Source)

🚀 I Built an ESP32 Smart Bike Control System with an Android App (Open Source) What if your motorcycle could become a smart vehicle without replacing …

Architecting persistent background tasks against Android Doze mode

The Silent Crisis I was sitting in a quiet, sunlit conference room during a high-stakes client presentation. The air was still, and every minor sound …

Google's Pixel 11 launch event is set for August 12, with possible price increases

Google's new phones could feature glowing LEDs and higher price tags.

My API Functions Had No Code Inside Them. So Who Was Actually Fetching the Data? (Interview Prep)

I wrote the network layer of my Pokedex app, and then I sat there staring at it, genuinely confused. interface PokeApi { @GET ( "pokemon" ) suspend fu…

Apple TV And Android TV: One Codebase, And CSS @media For The Living Room

This is the Tuesday follow-up to Friday's funding open source without the bait and switch , and it picks up right where last week's Apple Watch port l…

How screenshot detection works on Android

Detecting a screenshot on Android sounds like a single-callback problem. It isn't. Android 14 introduced an official screenshot detection API, but sup…

Architecting a location-aware sound manager without killing battery

It happened during a quiet afternoon at the library. I was deep into a debugging session for a client project when my phone decided it was the perfect…