Push Notification - Tester is a Mac app for iOS developers, QA, and backend engineers who need one Apple push without their own server. Install an APNs certificate in Keychain, select the .p12 or .pem, paste the device token, and write JSON for alert, badge, sound, or silent content. Choose Development or Production, then Send Push. It confirms token, certificate, and payload. It does not run campaigns or store a user list.