DarknessPush

Crossplatform APNS utility on your iOS/iPadOS/Android/macOS!

Requirements:

iOS 9.0+
iPadOS 9.0+
Android 4.1+
macOS 10.11+

Features:

Free
Open source
Rich set of APNS fields
Autosave all input data for next sessions

APNS testing fields:

Team ID
P8 Auth Key
Key ID (fills automatically from P8 filename)
Bundle ID
Body
Collapse ID (optional)
APNS type (alert by default)
Environment (production by default)
Priority (10 by default)