OneSignal Sender is an Android app developed by Hartmann Studios that falls under the category of Business & Productivity. This free app allows you to send notifications to your subscribers effortlessly. The app is user-friendly and allows you to add and save apps easily. It also provides the option of uploading images and icons to share with your subscribers.

The app provides a convenient platform to send notifications without any hassle. It provides a simple yet effective way to keep your subscribers informed. The app is easy to navigate and ensures that your notifications are sent promptly. OneSignal Sender is a must-have app for anyone who wants to easily send notifications to their subscribers and keep them engaged.