(JS) Push Notification
As the title said, you can use the extension to send IOS push notification to App users.
The requirement below will help you decide whether to use:
Make sure your server supports Cronjob with minutes. For example, if your server is GoDaddy, it fails!
Make sure your server port 2195,2196 and 5223 is opened. If not, please contact the server provider to confirm.
IOS Development Knowledge.
Make sure you know how to integrate the code into your app(s).
If those requirements is a piece of cake for you, feel free to use it.