Coming next
Word Search
A classic word search app with categories, unlocks, and short sessions. It is still in development.
Independent app studio
Small apps that respect short, quiet moments.
Sunstone Apps builds mobile puzzles and everyday tools for people who want to open an app, do one thing, and come back later without friction.
Independent studio for mobile puzzles and useful apps.
Sunstone Apps is intentionally small. Each app has to earn its place: it should start quickly, save progress clearly, and avoid turning a simple break into setup work. Daily Sudoku covers offline number puzzles. Word Search brings classic hidden-word play next.
Apps from the studio
Notes from the workbench
Practical notes from building, testing, publishing, and operating small apps.
When astro check says a dependency is missing but the real bug is a pnpm override
How a global vscode-languageserver-protocol override broke @astrojs/check with ERR_PACKAGE_PATH_NOT_EXPORTED, and why removing the override fixed typechecking across Astro sites.
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What changed when our institutional site started using analytics
A practical note on adding GA4 and Cloudflare Web Analytics to a small studio site without turning legal pages, sitemap rules, and header/footer links into copy-paste drift.
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Choosing mobile layout targets from production logs instead of device guesses
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.
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How we reorganized app documentation before it became unmaintainable
A practical structure for app documentation: living plans, dated history, versioned release notes, product references, store copy, and release gates without turning one Markdown file into a junk drawer.
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A small studio run by the person shipping the software.
Sunstone Apps is led by Jonathan Reis, a senior tech lead and software developer from Rio de Janeiro. The same hands-on work behind mobile apps, cloud infrastructure, DevOps, SRE, and release reliability shows up here in smaller products with tighter feedback loops.