All your workout history, routines, and personal records are securely stored and synced through iCloud. This means that when you upgrade to a new device or use multiple Apple devices, your progress is automatically available—no manual backups or data transfers needed. As long as you’re signed in with the same Apple ID and iCloud is enabled for Weights, everything stays up to date. It’s a seamless way to keep your fitness journey consistent, no matter what device you’re using.