Development journal

Posts tagged: UX

Published notes filed under this topic.

Engineering process

Choosing mobile layout targets from production logs instead of device guesses

11 min read

Written by: Jonathan Reis on Jul 16, 2026

How we used Loki user-agent logs, iPhone model usage data, and mobile screen-resolution stats to choose practical aspect-ratio targets for a React Native game layout.

React Native Mobile layout Observability UX Product analytics

UX and product

Running a heuristic UX critique on my own app — and actually fixing what it found

9 min read

Written by: Jonathan Reis on Jul 16, 2026

A solo developer walks through a Nielsen-based heuristic evaluation of a published React Native game, prioritizes the findings, and measures the score change after fixing them. Practical process for indie devs without a UX team.

UX React Native Heuristics Mobile games Accessibility Indie dev