Sending Push Notifications to two Apple Watches paired to one iPhone

Photo by Michał Kubalczyk on Unsplash

The problem

  1. If you turn off your iPhone, Apple Watch is still able to receive iMessages
  2. Family setup in WatchOS 7 (which is only available on cellular models) sort of uses the same setup we would like to achieve
  3. On this Apple Developer page, Apple states:

Devices and Frameworks

  • iPhone 12 Pro Max, running iOS 14.3
  • Apple Watch S5, running WatchOS 7.2
  • Apple Watch SE, running WatchOS 7.2
  • Leaf, a templating framework to generate a little front end
  • Fluent, an ORM framework
  • SQLite, to store the push tokens from the Watch
  • Vapor-APNS, an extension for Vapor to send Push Notifications via APNs


Configuring middleware

app.databases.use(.sqlite(.memory), as: DatabaseID.sqlite)app.migrations.add(CreateDevice(), to: .sqlite)try app.autoMigrate().wait()
try app.configurePush()

Configuring push

Creating the Apple Watch app
let appleECP8PrivateKey ="""-----BEGIN PRIVATE KEY-----<KEY GOES HERE>-----END PRIVATE KEY-----"""

API endpoints

  • list, which returns a list of all registered devices
  • put, which saves the token to the in-memory database
  • sendTestPush, which sends a push notification based to a specified device
let apiRoutes = app.grouped("api")try apiRoutes.grouped("push").register(collection: DeviceController())

A simple webpage

Let's play!

Apple Watch 44mm Series 5 on the left and Apple Watch SE 40mm on the right.
The Id and the tokens are anonymized.
Sending notifications to your Apple Watches!




💼iOS Developer // 🇳🇱The Netherlands // 👨‍🎓Apple Developer Academy Alumnus

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Dennis Vermeulen

Dennis Vermeulen

💼iOS Developer // 🇳🇱The Netherlands // 👨‍🎓Apple Developer Academy Alumnus

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