Can Blynk provide quick shared status and make smartphone beeping

Need Help With My Project
1

I need a functionality like described below. Can this be realised with Blynk?

I would like to install mutliple ESP32-boards with 4 buttons.
Let’s call them Status1 Status2, Status3, Status4

whenever on any of the multiple ESP32-devices a button is pressed the following should happen:

Send out a status-change-notification to 4 smartphones that status has changed and a countdown is starting an will be counted down.
Status shall be changeable with the smartphones too

If count-down reaches zero each smartphone should do a “BEEP” to indicate accustically “count-down at zero”
As second best solution send a telegram message to each Smartphone.

Could this be done?
best regards Stefan

2

There’s no ‘BEEP’ functionality in Blynk, although if you’re using Android phones then I guess that there’s a possibility to use an automation app such as Tasker alongside Blynk.
Notifications are limited to one every 5 seconds, but presumably your countdown would be displayed on a value display widget. Notification delivery speed depends on priority, which can impact battery life.

Personally, I prefer Pushover for notifications, which can be done from code or email messaging.

Otherwise it sounds do-able, based on the limited info you’ve supplied.

Pete.