While its now possible to display the Google Calendar directly on the Apple Watch using Apple's design, the Keep to-do list was removed without replacement.

Google had not updated its to-do list app for watchOS since it launched in 2019. Now, with Notes set to land on the smartwatch this fall, Keep says farewell to the Apple Watch.

Keep is still available for smartwatches running on Google’s own Wear OS platform. That’s unlikely to be of any comfort to Apple Watch users who are disrupted by the removal, however; they will need to wait until Apple brings a native version of the Notes app to watchOS 26 this fall.