A browser or the packaged mobile shell can register for push. Reminders sent by the scheduled job reach every registered device for that person and appear as an OS notification. Tapping it focuses an already-open window and navigates it to the reminder's link, or opens a new one. Duplicate notifications of the same reminder collapse together.
Also called: push notifications · phone alerts · reminder on my phone · notification when app is closed
- 1The device registers a push subscription, upserted on its endpoint so re-subscribing the same browser is idempotent
- 2The reminders job sends to every subscription belonging to the user
- 3The service worker shows the OS notification even with the tab closed
- 4Clicking focuses an existing window and navigates it to the link, else opens one
- 5Dead endpoints (404/410) are pruned automatically so a wiped phone stops being retried
In-app reminders only reach someone already looking at the app, which is not what a builder is doing between seven and five. A reminder that fires while he is on a roof is a follow-up call that never gets made. Reminders now arrive in the phone's own notification tray with the app closed, and tapping one opens straight to the thing it was about. Devices that stop answering are dropped automatically, so an old phone in a drawer does not silently swallow somebody's reminders forever.
- In-app alerts are invisible to someone in the field
- Old or wiped devices keep absorbing notifications nobody sees
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