OneSignal Notification Manager
onesignal-push
About App
This is an unofficial OneSignal Mobile Notification API Manager app which manages your onesignal apps and notifications. This app can handle your multiple apps and you can switch to any one of them to send and schedule repeating notifications. This app uses official OneSignal REST API to send and schedule your notifications.
This app has lot of customization features like including segments, send using filters, see notification preview, notification image, add additional data, see notification history, check stats of sent notification, and you can also schedule your notification.
Developer info