The Phone Behind the Flour Sacks: How a $0 Camera Cleared the New Hire Everyone Blamed
The register came up short on a Friday, and by Monday everyone on the schedule had already decided whose fault it was. Marisol ran a small bakery — si…
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Termux App Store: A Community Package Manager for Termux on Android
If you use Termux on Android, you probably know the feeling: You find a useful command-line tool on GitHub, but then you have to figure out how to ins…
The Last Error Is Not Always the Root Cause: Diagnosing Android Test Failures
An Android UI test times out. Maestro reports that an element is missing. A screenshot shows a blank or half-rendered screen. It is tempting to fix th…
Port Support You Can Trace Back to a Green Test
“Supported on iOS, Android, desktop, and web” sounds useful until you need one method on one target. Does WebSocket work on watchOS? Which Linux archi…
Google Play Requires Android 16 (API Level 36) by August 31, 2026 — React Native Migration Guide
Google Play has announced that starting August 31, 2026, all new apps and app updates must target Android 16 (API level 36). If you're maintaining a R…
Architecting for Zero-Network Dependencies: Challenges in Offline-Only Geofencing
It happened during a quiet midday prayer. The mosque was silent, the atmosphere heavy with focus, and then—the unmistakable, high-pitched trill of a r…
I Built (Almost) My Whole Play Store Listing Without Opening Figma — Here's the Free Tool That Did It
If you've ever shipped an app to Google Play, you know the feature graphic dance: open Figma, make a 1024×500 canvas, flatten it, export, upload, get …
Architecting a Reactive Geofencing Engine on Android Without Battery Drain
It was the middle of a Friday afternoon, and I was sitting in the back row of a lecture hall when my phone decided to perform a full-volume rendition …
I thought desktop copilots would win, then I tried building agents on Android
I used to assume the obvious home for AI agents was the desktop. Chrome extension. Sidebar copilot. Local app with a command bar. Maybe a browser auto…
The design work you must finish before Google Play's 14-day closed test
Google Play's 14-day closed test isn't just an ops requirement — it's 14 days when real people will use your app for the first time. If your design is…
Beyond the .tflite File: The Architect's Guide to Shipping High-Performance Edge AI on Android
If you think shipping AI to an Android device is as simple as dropping a .tflite file into your assets folder and calling a predict() method, you are …
AR And VR In Java: ARKit, ARCore, And A Virtual Room You Can Debug
This week's release post was about making the VM fast. Today's post is about pointing that VM at the real world. PR #5335 adds two new core packages: …
Locator-based vs vision-based mobile app testing
When a test needs to tap a button, it has to find the button first. There are two ways to do that. It can ask the app for its element tree and look th…
Architecting Geofencing for Android: Lessons in Battery Conservation
Opening hook The silence in the lecture hall was absolute, punctuated only by the professor’s rhythmic pacing. I was deep into a complex algorithm pro…
Stop Counting Devices: Measure Whether an Android Multi-Phone Desk Saves Time
Putting six Android phones beside one computer looks efficient. It may not be. More screens can reduce walking, cable swapping, and repeated setup. Th…
How We Beat HotSpot Performance (By Cheating, But Not Like That)
No, we didn't cheat in the benchmark. At least I hope we didn't. Every optimization in this story was gated on bit identical output checksums against …
Whisper on Mobile Is Better Than I Expected, So I Built an Offline Notes App
I expected offline speech to text on mobile to be too slow, too heavy, or too unreliable for a real app. After testing Whisper locally on Android, I c…
Building Recourse.ai: A Parametric Insurance Prototype for the Age of Agentic AI
Every enterprise I've talked to in the last year has the same story: AI agents are being deployed faster than risk and compliance teams can review the…
Your Paywall May Not Be the Leak: Audit These 5 Subscription Handoffs First
A subscription app can have a polished paywall and still lose the sale somewhere else. The store listing may attract the wrong intent. Onboarding may …
Pixels to Predictions: Building High-Performance Edge AI Pipelines with CameraX and TFLite
You’ve built a machine learning model. It’s accurate, it’s lightweight, and it works perfectly on your desktop. But the moment you port it to an Andro…
Mastering Edge AI: How to Build High-Speed Vision Analyzers on Android
In the world of Deep Learning, there is a fundamental, almost violent tension: the computational greed of neural networks versus the strict, unforgivi…
When a Mobile Game Macro Is Not Enough: A Screen-Aware TC Games Alternative
TC Games is a capable Windows-focused way to mirror a real Android phone and play with keyboard and mouse. Its official documentation includes key map…
5 mistakes I made building my first Android app (and how I fixed them)
I'm not a developer. I build Android apps on evenings and weekends using AI coding assistants (GitHub Copilot and Claude). My latest app, ScorePop, is…
Keep Agent Logs Out of Mobile Cloud Backups on iOS and Android
A mobile client may store agent prompts, repository paths, diffs, command output, and downloaded artifacts. Protecting the live app sandbox is not eno…
What Makes Healthcare App Testing Different from Every Other App Category
A patient opens their prescription and sees 500mg instead of 50mg. A lab report displays "Normal" when the value is critically high. A teleconsult dis…
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…
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…
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…