Calcpace passed 50 installs on Google Play, from 7 countries and regions: Brazil, Spain, Cambodia, Germany, Portugal, Venezuela and Macau.

What shipped since launch

  • Run recording with the phone’s GPS, in a native Kotlin screen.
  • Health Connect both ways: workouts from your watch arrive with their route, and runs recorded in Calcpace go back to Health Connect.
  • Importing your whole Strava history from the export ZIP.

How it is built

Apart from that recording screen, the app is still the calcpace.app site: one Rails 8 and Hotwire codebase, inside a Hotwire Native shell on Android.

All the math is the calcpace gem. The UI is jet_ui, which we’re building at JetRockets.

Next up: iPhone

Next is the iPhone app, with the same Hotwire Native approach.

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