App: Swifty Pusher
Developer: DU QIU
Genres: Dienst­programme, Entwickler-Tools

It is a Mac app for sending push notifications to the Apple Push Notification Service (APNs) directly. 
No need to set up your own server for testing push notifications on a physical device.
It uses the authentication key approach to communicate with APNs.

This tool offers:
- Allowing developers to use custom payloads to test push notifications.
- Brief APNs responses are displayed for the convenience of debugging.
- And it's open-source!

Release notes:
UX improvement:
* Use a yellow indicator to show sending notifications in progress.

This version fixes an issue:
* Send the same notification to the same device 3-5 times continuously. User encounters TooManyProviderTokenUpdates error.