Ionic Phone App. Set alarm that survives reboot. Open App when alarm fires

Question

I'm new to Ionic and building an alarm app.

How do I set an alarm and have it survive reboot?
How does the alarm activate the app to a certain ui state?

I found this, but it has this problem

This looked promising, but I didn't see an alarm function.

These two Cordova plugins looked promising, but they don't support IOS.

What's the best strategy? Thanks!

Answer 1

On iOS there is no way to open your app out of the blue without the user's doing it manually (or calling it from another app). -Unless you are creating a jailbroken app
The closest you can get is to set a Local Notification to pop up at the time that your alarm is supposed to go off. It will trigger a Push-like Notification that should be reboot persistent. Once it popped, if the user decides to tap on it, it will open your app.