This tiny sensor turns your regular watch into a smartwatch
Ganance, a Chicago startup, has begun pre-orders for the Heir, a coin-sized sensor that sticks to your regular watch and instantly gives it smart features.
It tracks your steps and buzzes for phone notifications (no screen or subscription needed), and you can check all your stats in a simple app.
It tracks steps, distance, and calories burned
Heir is super slim (30mm wide, 3mm thick) and attaches easily with a micro suction disk. It tracks steps, distance, calories burned, and syncs with Apple Health or Ganance's iPhone app.
You'll need to charge it every 42 hours using its dock.
Android support is coming by June 2026, plus new features like WhatsApp alerts and adaptive goals.
Not into watches? Ganance is also making the HeirBand for workouts.
Pre-orders are open now at $149, shipping this spring to the US Canada, UK and parts of Europe.