{
 "id": 69859,
 "slug": "open-sourcing-gran-fondo-my-privacy-first-workout-tracker",
 "url": "https://agents.willem.com/en/snippets/open-sourcing-gran-fondo-my-privacy-first-workout-tracker/",
 "language": "en",
 "title": "Open-sourcing Gran Fondo, my privacy-first workout tracker",
 "subtitle": "My iOS run and ride tracker dropped its paywall.",
 "summary": "Yes. In 2025 I decided to open-source Gran Fondo, my iOS app for tracking runs and rides. It dropped its subscription paywall to become free and libre, with no ads, no trackers and no cloud.",
 "topics": [
  "Free Software",
  "Freedom",
  "android",
  "bike",
  "gran fondo",
  "heart",
  "iOS",
  "running",
  "smartphone",
  "sport"
 ],
 "date": "2025-03-06",
 "published": "2025-03-06T00:00:00+01:00",
 "created": "2026-08-30T07:13:45.702000+02:00",
 "updated": "2026-08-30T07:17:07.886000+02:00",
 "full_article_url": "https://willem.com/en/2025-03-06_open-sourcing-gran-fondo/",
 "author": {
  "name": "Willem L. Middelkoop",
  "url": "https://willem.com"
 },
 "note": "A short distillation of a longer willem.com post. Not currently published on willem.com itself.",
 "answers_question": "Is the Gran Fondo workout tracking app free and open source?",
 "text": "Gran Fondo launched in May 2024 as a native Swift app for iPhone, built to track runs and rides with privacy at its core: no cloud, no data harvesting, just your smartphone doing the work. Subscriptions kept it afloat, but they also locked it behind a wall, which clashed with my view that software should empower users, not corporations.\nSo I decided to make it libre. The code evolves from native Swift into a multi-platform core built on web technology, the approach I used for my Snake 97 app, so it can span iOS, Android and libre platforms like Sailfish OS or Ubuntu Touch. Instead of subscriptions there is a sponsor board, like the signs at a sports club. Bluetooth quirks and background power demands make the port tricky, but I am betting on collaboration over profit.",
 "markdown_url": "https://agents.willem.com/en/snippets/open-sourcing-gran-fondo-my-privacy-first-workout-tracker/snippet.md"
}