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I create products that add value to users' daily lives without making them complicated.

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Tech3

Pabal2

Ink On: E-Ink Calendar2

Aurora Eos: Forecast & Alert4

Post Black Belt: BJJ Journal6

Journal3

Tile Do: Todo list1

Building Personalized Sunset/Sunrise Push Notifications with Expo + Firebase

Tech

Building Personalized Sunset/Sunrise Push Notifications with Expo + Firebase

A practical walkthrough of a personalized sunset/sunrise notification pipeline using Expo, Firebase Functions, Firestore, Cloud Tasks, and FCM.

Mar 26, 2026

Optimizing 3D, Animation, and Chart Performance in an Expo Mobile App

Tech

Optimizing 3D, Animation, and Chart Performance in an Expo Mobile App

A practical walkthrough of optimizing 3D visualization, 2D animation, and solar wind charts in a React Native (Expo) app.

Mar 26, 2026

3 MCPs That Reduced Repetitive Operations in Solo App Development

Pabal

3 MCPs That Reduced Repetitive Operations in Solo App Development

Three core Pabal MCPs that cut repetitive app operations and helped me stay focused on product development.

Mar 26, 2026

Build Your Own Custom Screensaver Collection

Ink On: E-Ink Calendar

Build Your Own Custom Screensaver Collection

Build e-reader lock screen combinations with your own uploaded images.

Feb 28, 2026

Aurora Eos: Forecast & Alert

Build Your Own Aurora Forecast Widgets

A quick guide to customizing Aurora Eos widgets with key forecast signals on your home and lock screens.

Feb 27, 2026

Post Black Belt: BJJ Journal

Build Your Own Jiu-Jitsu Widgets

An overview of new widget features to keep your jiu-jitsu routine close: D-day settings, a monthly dot calendar, and home/lock screen widget options.

Feb 27, 2026

A 1-Year Review of Maintaining iOS and Android Widgets with Expo

Tech

A 1-Year Review of Maintaining iOS and Android Widgets with Expo

My experience developing and maintaining cross-platform widgets in an Expo environment using @bacons/apple-targets and react-native-android-widget.

Feb 21, 2026

Building an E-Reader Screensaver App with Expo

Ink On: E-Ink Calendar

Building an E-Reader Screensaver App with Expo

The story of developing Ink On, a minimalist E-Ink screensaver app, and technical challenges faced using Expo and React Native

Feb 21, 2026

Living as a Digital Nomad in Seoul for 6 Months

Journal

Living as a Digital Nomad in Seoul for 6 Months

A half-year in Seoul as a digital nomad: where I stayed, worked, ate, and how I spent my days.

Feb 10, 2026

How to Interpret Aurora Conditions: From Solar Wind and Geomagnetism to Earth Weather

Aurora Eos: Forecast & Alert

How to Interpret Aurora Conditions: From Solar Wind and Geomagnetism to Earth Weather

A guide to reading aurora conditions in order: solar wind, geomagnetic activity (Kp, Bz, Ovation), and local weather. Plus tips for using Aurora Eos.

Jan 23, 2026

Check Aurora Forecast Home Screen Widget

Aurora Eos: Forecast & Alert

Check Aurora Forecast Home Screen Widget

How the Aurora Eos 3-Day Kp Forecast home widget combines Kp and Ovation to help you time your aurora hunts better, right from your home screen.

Jan 13, 2026

Journal

2026 New Year Plans

Setting goals and plans for the new year 2026.

Jan 5, 2026

Journal

20 Questions to Look Back on 2025

As the year comes to an end

Dec 31, 2025

Pabal

Pabal: An App Deployment and Maintenance Automation Tool for Solo Developers

Learn about Pabal, a tool created to solve the bottlenecks in app deployment and maintenance operations, with real-world use cases.

Dec 22, 2025

Aurora Eos: Forecast & Alert

Seeing My First Aurora with My Own App

A developer who loves astronomy shares the experience of seeing their first aurora in Canada using a self-built aurora prediction app

Dec 19, 2025

Post Black Belt: BJJ Journal

Make Today's Techniques Your Own

A closer look at the renewed Techniques tab, hashtag-based recommendations, and personal technique tracking that help turn what you learned today into your actual game.

Aug 22, 2025

Post Black Belt: BJJ Journal

Log Double Sessions, Celebrate Your First Day, Choose Icon Themes, and View All Journals

A quick update on requested features: multi-session training logs, start-date celebrations, icon themes, and a full journal list view.

Jan 27, 2025

Traveling halfway around the world to Porto to create a fresh To Do App in two weeks

Tile Do: Todo list

Traveling halfway around the world to Porto to create a fresh To Do App in two weeks

Discovering inspiration in Azulejo tiles to create Tile Do, a unique to-do app that blends Portuguese design aesthetics with modern productivity tools.

Dec 2, 2024

Introducing Poble, the World's First BJJ AI

Post Black Belt: BJJ Journal

Introducing Poble, the World's First BJJ AI

Introducing the Poble AI MVP with automatic technique hashtag generation built from real journal workflows in Post Black Belt.

Oct 12, 2024

Building a BJJ App While Training Jiu-Jitsu in Taipei

Post Black Belt: BJJ Journal

Building a BJJ App While Training Jiu-Jitsu in Taipei

A story about visiting an overseas gym again after half a year.

Sep 15, 2024

Building a BJJ App While Training Jiu-Jitsu in Chiang Mai

Post Black Belt: BJJ Journal

Building a BJJ App While Training Jiu-Jitsu in Chiang Mai

Experiencing my first digital nomad life in Thailand

Mar 15, 2024