How to Publish Your First Android App on Google Play: A Complete Checklist
How to Publish Your First Android App on Google Play: A Complete Checklist Publishing your first Android app on Google Play involves more moving par…
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Easy Full Stack Authentication and Login in the Style of Spring
Three requests leave your app just as its access token expires. If each refreshes independently, the first exchange can invalidate the refresh token…
How apps spot an Android emulator (part 1): build props and kernel tells
How apps spot an Android emulator (part 1): build props and kernel tells I spent a few days this month poking at a stock Android emulator to answer…
Android on iOS, Web & Desktop Efficiently and for Free
We are not the first to bring Android to iOS. Earlier projects brought Android's runtime along with the application. Dalvik was built for Android, i…
Stop Bypassing SSL in Flutter: Solving the Missing Intermediate Certificate Nightmare with AIA Chasing
Stop Bypassing SSL in Flutter: Solving the Missing Intermediate Certificate Nightmare with AIA Chasing Every Flutter developer has run into this mad…
Is Android App Protection Still Necessary After REA? How Should Developers Choose an App Hardening Solution in 2026?
Is Android App Protection Still Necessary After REA? How Should Developers Choose an App Hardening Solution in 2026? 1. Has REA Made Traditional APK…
Why HTTPS Won’t Save Your Checkout Flow: Building Zero-Trust State Machines in Kotlin Multiplatform
How to protect multi-step workflows, fin-tech funnels, and Server-Driven UI from step-skipping, state tampering, and replay attacks — with zero runt…
What Apple actually checks: an App Store submission checklist for a health app
Most App Store submission checklists are flat lists. They tell you what has to be true, in roughly the order Apple numbers its guidelines, which is…
End of an era in Japan for classic push-button phones
Traditional Japanese flip phones, known as gara-kei, survived for decades with unique local features before final 3G network shutdowns ended their e…
Sphinx — your neighbourhood, turned into riddles
What I Built The screen shows one line: I am stone, flat, and written on. One of the dates on me is 1956. Then it goes away. You put the phone in yo…
How to Write a Mobile App Project Brief: Free Template and Example
Originally published on Codent . Turn an app idea into a scope a developer can assess. Includes a free brief, a worked example from Flowboo, and que…
How to Budget Realtime Score Retention Across Cellular Handoffs: API Boundary Patterns
Short answer: make the feed a replayable log with an explicit cursor, and let the client switch from live delivery to bounded backfill whenever a mo…
App Development Cost: 9 Factors That Shape Your Budget
"How much does it cost to build an app?" It is the first question almost every client asks me, and the honest answer is: it depends on what the app…
How to Add Geofencing to an Ionic App
In this tutorial, we build a store reminder page in Ionic Angular: switch on a toggle for a store, and when you later walk within 200 meters of it,…
Designing a Geofenced Attendance System: Haversine, GPS Accuracy and Anti-Spoofing (with Python)
"Only allow check-in at the office" sounds like one if statement. In production it becomes a pile of edge cases: imprecise fixes inside concrete bui…
Privacy Policy for a Small App: What Google Play Requires
A lot of solo developers find out about the privacy policy requirement at the worst moment: the app is built, the closed test is about to start, and…
HealthKit to JSONL vs JSON: one snapshot survives a cut sync, the other gives you nothing
Two apps can write the exact same Apple Health records to disk and behave nothing alike the moment a sync gets interrupted. I benchmarked it on 2026…
Native Desktop Themes for Production Apps
A desktop app needs more than larger versions of its phone controls. Dialogs need their own windows. Title bars, scrollbars, and keyboard focus need…
Ordering, Receipts and Reconnects: The Chat Client Problems That Only Appear on a Bad Network
Ordering, Receipts and Reconnects: The Chat Client Problems That Only Appear on a Bad Network A chat feature demoed on office wifi is a solved probl…
The Real Challenges of Testing Android Apps Across Devices
The hardest part of shipping an Android app is not building it; it’s making sure it works on the thousands of devices your users actually own. An ap…
What breaks when you ship to ten locales at once
I localized a mobile app into ten languages. Most of what I'd read beforehand was about how to translate. Almost none of it was about what goes wron…
React Native vs Flutter in 2026: Which to Choose
Originally published on the MatrixInn Solutions blog . React Native vs Flutter is still the first real decision most teams make when they commit to…
Expo SDK 58 beta opens with iOS 27 support and a faster build pipeline
You update your simulators, iOS 27 drops, and every app you haven't rebuilt yet either misbehaves or just looks wrong on the new scene-based life cy…
How to Use Gemini Nano in a Capacitor App
Originally published on the Capawesome blog . Gemini Nano is Google's on-device language model for Android, and a Capacitor app can prompt it withou…
Adding DRM to Native Video Apps and AWS Live Streaming: What to Validate
A protected video player has to work across several playback environments. Android, iOS, Apple TV and Samsung Smart TV do not share one player stack…
Introducing Buoy.gg — in-app tools for mobile + web apps
When something breaks in production, the usual loop is slow: reproduce locally, dig through logs, guess at what the user saw, then ship a fix and ho…
How Much Does Google Play Closed Testing Cost?
Short answer Google Play closed testing costs anywhere from $0 to around $35. Direct outreach, family, and free peer exchange platforms cost nothing…
Apple Mocked Foldables for Black Bars. Its Own iPhone Duo Has the Same One.
Apple spent years mocking Android foldables for wasting screen space on video. Its own iPhone Duo just shipped with the identical problem: run a sta…
Deferred Deep Links in Android: Complete Integration Guide
Same problem as always: a user without your app taps a link, gets routed to the Play Store, installs, opens the app — and lands on the default launc…
Deferred Deep Links in Flutter: Complete Integration Guide
Flutter's go_router or uni_links -based setup gets you clean routing once a link actually reaches the app. That's the easy 90%. The part that quietl…