The War of the Givens - Daniel Price

Saved from the apocalypse by three mysterious beings, sisters Hannah and Amanda Given were marked with a silver bracelet and transported to an entirely different Earth, a place where restaurants move through the air like flying saucers and the fabric of time is manipulated by common household appliances. Joined by four other survivors from their native world, each with the same bracelet, the new companions became known as the Silvers. But their new Earth is about to suffer the same fate as the old one, and the Silvers only have ten weeks to stop it.