Pushover

Pushover is a simple push notification service that integrates easily into web apps like IFTTT, network monitoring systems, shell scripts, servers, IoT devices, and anything else that needs to send alerts to your Android, iPhone, iPad, and Desktop devices. App includes a free fully-functional 30-day trial and receiving unlimited notifications on Android after that requires a one-time $4.99 in-app purchase. Now includes home-screen and lock-screen widgets, support for sending notifications to Android Wear watches, end-to-end encryption, and a Tasker event plugin! Visit https://pushover.net/ to find apps, plugins, and services that support Pushover, or get a free API key to create your own app. Also find out about our iOS and Desktop clients to receive Pushover notifications on all of your devices.