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Carb Goblin

A local-first Android fueling tracker for endurance activities where execution matters.

Carb Goblin app visual
Carb Goblin active activity screen
Carb Goblin fuel library screen
Carb Goblin activity settings screen

Carb Goblin records timestamped fueling and note events during endurance activities, compares actual intake against hourly carb, fluid, and sodium targets, and exports a Markdown activity log for later analysis.

The app is meant to feel like a small scientific instrument panel rather than a coach.

Why it exists

During an activity, fueling decisions are often made quickly. Carb Goblin keeps quick-access items large and touch-friendly, shows current-hour progress, and preserves the timeline for later review.

V1 shape

  • Activity setup with hourly nutrition targets
  • Packed quick-access fuel items
  • One-tap event logging
  • Timestamped notes
  • Event correction through an activity log
  • Post-activity reflection
  • Markdown export for Obsidian, Codex, ChatGPT, or another analysis workflow
  • Local backup and restore
  • No internet permission, accounts, cloud sync, telemetry, analytics, or coaching recommendations