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Life Update Mobile — Gemini API in runtime

Personal tracking system — daily entries analyzed by Gemini in runtime, semantic distance to a 5-year plan, Steve-Jobs-style focus metrics (3 things a day). Shipped 0 → production in a day.

• Gemini API runtime for semantic analysis of daily entries
• Hybrid data model: .md files as source of truth + DB as execution engine
• Next.js 16 + NextAuth v5 + Prisma + Supabase, 20 commits in 24h

Context

A personal product — a tracking app that uses Gemini at runtime to summarize what I wrote this week.

Problem

Every journal-AI app I'd tried either stored my text on someone else's server or refused to run without internet. I wanted local-first + LLM on demand.

Approach

Local SQLite store, plain-text journal. Summarization is opt-in: tap a week, send it to Gemini, cache the result.

Ship

Single binary build. No auth server. Gemini API key ships with the user, not the app.

Outcome

Shipped private for my own use. Three friends asked to install it. Weekly summaries in 4 seconds.

Differently

I would put the prompt on the Settings page. Right now it's hidden — advanced users want to see it and I was being overly protective.

Craft floor

No analytics. No telemetry. No account. Bundle under 8 MB. Works airplane-mode except the summary action.