Yup is compatible with both smartphones and tables. You can also sign in using a laptop or desktop through Yup on web.
While you can use Yup on multiple devices, please make note that you can only be signed in to one device at a time. If you sign into a second device, Yup will automatically sign you out of the first device.
To use Yup on a new device, please sign out of the existing device and use the same credentials you normally would to log in to the new device.