Know exactly when your kettle boils — no more guessing or babysitting the lid.
Coming to the App StoreiPhone · iOS 18+Physics, not a guess — from your kettle's wattage, the water amount and its starting temperature.
A live countdown in Live Activity, the Dynamic Island and home-screen widgets while it heats.
Point the camera at the label or barcode to add your exact model — power and capacity filled in.
Premium: boil, then cool to the exact green, oolong or black temperature, with a steep timer.
Keetle uses the heat equation — t = (m·c·ΔT) / (P·η) — combining your kettle's power and efficiency with the water volume and a weather-aware starting temperature, so the estimate fits your kettle, not an average one.
Try the maths yourself → a boil-time calculator that runs in this page, no app needed.