Castor
Workshop

Useful products, made with care.

Products

Kaapi

Your tastiest cup of coffee is only a few adjustments away.

Log a brew, rate how it tastes, and get one adjustment. Repeat until you’re dialed in.

Visit Kaapi Coming soon to the App Store, for iPhone.
Kaapi’s shelf of coffee bags, each with its roaster and score. Rating a brew on a scale from much too sour to much too bitter. Kaapi suggesting one change: two clicks finer on the grinder.

HeartMirror

Always have your heart rate in view during workouts.

Pair any HR monitor, strap or Apple Watch, and see your live heart rate on your phone, alongside HR zones and programs to achieve your best workouts.

Visit HeartMirror Coming soon to the App Store, for iPhone and Apple Watch.
HeartMirror showing 130 BPM in Zone 1, with the five zones and a running timer. A workout summary with average and max heart rate, a heart rate graph and interval splits.

Still whittling

The constellation Gemini in a dark sky full of stars, with the Milky Way along one side.