Actwivity
Personal Twitter push notification service.
Third party Twitter clients lost the ability to send push notifications due to the discontinuation of the Twitter streaming APIs. Using the free tier of the new Premium Account Activity API, I created my personal Twitter push notification service with a NodeJS server that is connected to the Apple Push Notification service and a simple iOS client that serves as a 3rd party Twitter client launcher.
Image from apps-of-a-feather.com