Independent app studio
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.
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. Future apps only move forward when they are ready to be measured and supported.
Send selected code or file references to the OpenCode terminal from VS Code with a single shortcut. Bridges the editor to AI-assisted development without copy-paste.
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Offline Sudoku with daily challenges, flexible mistake rules, hints, and progress saved automatically.
→Behind-the-scenes decisions from building, publishing, and operating mobile games and everyday apps.
Written by: Jonathan Reis on
Install n8n locally without Docker, wire its built-in MCP server to an AI coding agent, and build a pull-request monitor that diffs stored state and notifies your desktop when something changes.
Written by: Jonathan Reis on
Learn what OMP is, how its marketplaces install extensions, and how to turn skills, rules, model profiles, and MCP definitions into one versioned personal setup across computers.
Written by: Jonathan Reis on
How Oh My Pi works, where it differs from Claude Code, Cursor, and OpenCode, and which harness features convinced me to switch tools.
Written by: Jonathan Reis on
Build one analytics contract for an Expo app, keep Firebase and GA4 working, add Amplitude without rewriting product code, and gain independent rollout, failure isolation, and better product decisions.
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.
Sunstone Apps