A collection of 67 blog posts I've written over the years. My writing spans topics like cognitive science, software development, and design — with the occasional detour into the unrelated. I revisit and revise older posts regularly, and I welcome any feedback that can help improve my writing, and more importantly, my thinking. I hope you find something interesting here.
Apple hands you a CSV, not an invoice. Drop your App Store Connect financial report below and instantly generate the invoice, payout voucher, and bookkeeping cover sheet your accountant needs — entirely in your browser.
ExpoAn opinionated take on the best Expo stack, what data tells about app monetization, and why you should still choose React Native to win
Use Linking.canOpenURL to detect if another app is installed on iOS in Expo. Covers Expo config plugin setup, URL scheme configuration, CNG workflow, and a hook to conditionally show a deep link button.
ASC CLI lets you skip App Store Connect's clunky web UI and manage builds submissions, and localizations from your terminal. Pair it with AI skills and it gets even better.
RevenueCatA hackers guide to building an MVP that can win RevenueCat's Shipyard hackathon
Overengineered approach to tracking how many books I've read in 2026, with filtering, auto generated images, and progress bars
RevenueCatLearn how to monetize the app you created with Bolt using RevenueCat SDK and few lines of code.
How to check if another iOS app is installed using canOpenURL and custom URL schemes in SwiftUI. Includes Info.plist setup and working code examples.
How to handle rate limits and memoization when scraping the app-store-scraper package.
Building a great Android app takes time, creativity, and persistence. But once your app is live, there's one question every developer eventually faces: how do I actually make money from this?
Netli.fyi is a native iOS client for Netlify that gives you quick access to your sites, build logs, domains, and account info. It's now in beta and needs real-world testing.
Stop FlatList flickering and layout shifts when using React Query in React Native. Learn the right patterns for loading states, skeletons, and keeping your list mounted.
RevenueCatA practical guide to planning, configuring, and promoting seasonal subscription offers on Google Play.
RevenueCatApple introduces a 15% IAP rate for apps that host third-party mini apps, with strict rules and new APIs attached.
RevenueCatUnlock web purchases in your React Native app with one tap
RevenueCatA simple, low-pressure way to let users support your app — without a subscription.
RevenueCatUse RevenueCat Web Billing and Zapier to bring churned users backRevenueCat Web Billing win-back campaign
RevenueCatHack your app store ratings by capturing happy users at the right moment.
RevenueCatHow to win Shipaton: Turn your Devpost submission into a story judges remember.
RevenueCatTactics to get your first 100 users and show real momentum during Shipaton
RevenueCatA time-boxed framework to build, test, and ship your Shipaton app before the clock runs out.
Three apps, one Shipaton: A behind-the-scenes look at what I’m building during RevenueCat’s 2025 hackathon — from saunas to CMS tools to Netlify on the go.
RevenueCatLearn how yo utilize RevenueCat's virtual currencies to power your in-app economies
RevenueCatDon’t know what to build for Shipaton? A 45x hackathon winner breaks down how to find and validate app ideas that solve real problems—and have a shot at winning.
RevenueCatBehind the scenes of a Shipaton-winning launch — from prototype to community-powered release.
RevenueCatHow building his first app led Leandro Tolaini from Shipaton to winning WWDC's Student Challenge
RevenueCatA step-by-step tutorial to let users pay to remove ads—using AdMob, and RevenueCat
RevenueCatA step-by-step tutorial to let users pay to remove ads—using Expo, AdMob, and RevenueCat
RevenueCatBuild a Blinkist-style paywall with RevenueCat and Zapier—no backend required.
A personal recap of App.js 2025: speaking about in-app purchases, highlights from Krakow, favorite talks, and why this conference remains one of my top picks.
RevenueCatUse one React Native codebase and RevenueCat’s Web Billing SDK to support subscriptions across platforms in 30 mins
How vibe coding shifts software development, why it’s closer to prototyping, and how domain-embodied development will change who builds the next generation of software.
Learn how to correctly manage and access environment variables in Netlify Functions.
How to implement in-app purchases and subscriptions in React Native using react-native-purchases. Covers consumables, non-consumables, subscriptions, entitlements, customerInfo, and testing.
Full article version of the talk I gave at RTC.ON Conference 2024 about getting started with WebRTC in React Native
ExpoA complete guide to implementing in-app purchases in your Expo app using RevenueCat.
Yes, Se7en has a novelization — but the movie came first. How Andrew Kevin Walker's screenplay went through multiple rewrites before becoming a classic, and how the book adaptation compares.
How to conditionally skip or execute GraphQL queries in Apollo based on variables. A simple variablesOrSkip helper that prevents null variable errors in TypeScript.
How to style HTML content in React with Tailwind CSS when using dangerouslySetInnerHTML by writing custom selector using arbitrary variants.
How to switch back to the old Slack desktop UI on Mac and say goodbye (at least temporarily) to the current UX catastrophe.
Add custom debug actions to the React Native Developer Menu using DevSettings.addMenuItem(). Also covers what "Configure Bundler" does, keyboard shortcuts (Cmd+D / Cmd+M), and all built-in menu options.
Learn how to properly format dates based on user locale in React Native using Intl.DateTimeFormat and react-native-localize, avoiding the common pitfalls of hardcoded date formats.
Understanding the shortcomings of the Bayesian approach to brain and cognition, reviewing criticism surrounding task selection, model selection, and theoretical contributions.
Four approaches to designing digital services that persuade your user to live a healthier life
20 things about 2020 from my perspective. I think there are easier ways to brag about your accomplishments than trying to mask them under an annual review.
A comprehensive review of psychological research on the golden ratio and its relationship to aesthetic experience, examining whether this ancient mathematical model can reliably predict visual preferences in user interface design.
Improving the developer experience with a few small tweaks
How to fix the 'VirtualizedLists should never be nested inside plain ScrollViews with the same orientation' warning in React Native using ListHeaderComponent and ListFooterComponent.
How to build a clock face with hour markers using SVG in React Native. Step-by-step guide with react-native-svg, styled-components, and support for dark and light themes.
How to build and deploy a static website using Publish, a static site generator for Swift. Covers setup, theming, Markdown content, and deploying to Netlify.
This article is based on a lighting talk I gave at React Day Berlin in 2019. Learnings are from prototyping Nyxo app.
There is no need to start Xcode to test on different React Native apps on different device simulators. You can do that easily with the simulator flag.
Checklist for publishing React Native app to Apple App Store successfully.
What is crosstalk in stereoscopic 3D displays, why it makes 3D movies look weird, and how display manufacturers are working to reduce ghosting artifacts in modern screens.
A summary of every book I read in 2018, from fiction to biographies, with highlights and thoughts on each. Includes picks from the Business Insider 100 biographies list.
Between the years 2015 and 2018 I participated in over 70 hackathons. I won 40 of them, most wins being towards the end. Sometimes winning was mostly accidental, but majority of the time it was due to a strategy me and our team followed. This article is abot trying to write down the strategy that worked.
Learn how to automatically generate Open Graph sharing images for your Gatsby.js blog by building a custom plugin using Jimp for image manipulation.
Exploring solutions for sustainable energy use at the Energy Efficiency Hackathon, with innovative projects focused on energy conservation.
My experience at Royal Hackaway, a 24-hour hackathon at Royal Holloway University of London. Covers the project we built, lessons learned, and tips for first-time hackathon attendees.
A journey through the Kuohu Creative hackathon, highlighting creative projects and innovative problem-solving approaches.
An entry from the Hackathon Diaries series, where we explore how technology meets nature with Fiskars and plant communication.
Reflections on the Oulu 5GFWD hackathon, exploring 5G innovations and groundbreaking tech solutions.
Exploring the intricacies of human-centered design, this article delves into the pivotal role of the designer's perspective in shaping innovation. It underscores the significance of design as a deliberate process, echoing in every human-made entity.
Touchpoints are how intangible services become tangible. A review of touchpoint definitions in service design literature and how they are applied in practice today.