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Version: Next (2027.08.0)

Karter

Karter is a privacy-first, open source vehicle maintenance tracker built with Flutter. It was born with the mission of creating the best vehicle maintenance app while respecting your privacy and donating 20% of affiliate revenue to social causes.

Latest release: [v2027.08.0](https://github.com/abrahdev/karter/releases/tag/v2027.08.0)

Features​

  • Multi-vehicle management — add, edit, delete vehicles with type, VIN, and plate
  • Fuel tracking — log fill-ups with automatic economy calculations (L/100km, MPG, km/L)
  • Maintenance log — track repairs, part replacements, and service history
  • Service intervals — set reminders based on distance or time, seeded from community templates
  • Spare parts — catalog and track replacement parts
  • Odometer tracking — log readings in km or mi
  • Dashboard & charts — statistics over your vehicles' data
  • JSON export / import — full data backup, portable between devices
  • Community templates — maintenance schedules contributed per make/model, synced from an online repo
  • OBD-II integration — ELM327 support (coming soon)
  • Material Design 3 — dynamic colors and dark mode
  • 100% offline — no accounts, no telemetry, no tracking

Why Karter?​

  • Privacy-first: All data stays on your device in a local SQLite database. No accounts, no cloud, no analytics, no tracking.
  • Open source: Anyone can audit the code, verify how costs are calculated, and contribute. Karter is licensed under AGPL-3.0.
  • Community-driven data: Vehicle maintenance templates are a forkable, human-editable JSON package — add your car and open a pull request.

The 20% Promise 🎗️​

We donate 20% of the revenue generated through affiliate links (parts, tools) to NGOs chosen by the community.

Getting started​

Documentation​