ios - Adding notification to app that makes pdfs -

i have app creates pdf's user. when app creates new pdf (say on users i-pad) want iwatch display notification saying new pdf has been created.

does require server, understanding apple provide service.

any or tips appreciated!

first address difference between local , push notifications. local notifications used on specific device user on @ time, , scheduled specific time such reminder app notifying @ scheduled time. push notification sent via server other devices.

since want send other devices want implement push notifications. in order user need app on devices. additionally need have login system know devices belong same user. there need push notification service can targeted push notifications. there many services out there , need decide 1 right situation.

push notifications sent device using device token apple provides after user approves notifications app. each app on each device has own device token. in addition targeted notifications want push service allows setup channels such parse.com, way can setup channel specific each user (email, username, or ...). when user logs in on device , approves getting push notifications, channel set (whatever option choose) , can trigger push notification specific channel , send notification device.

there other consideration place start.