Amazon Web Services announced a new tool today that gives app developers the ability to add push notifications to apps in the Amazon App Store, iTunes and Google Play.

Amazon is calling it the “Amazon Simple Notification Service or Amazon SNS,” but essentially it is like other app push messaging, as it allows developers to send a notification to users in order to get them to come back to an app. Developers can use the functionality for free, sending up to a million push messages a month for free. Beyond that Amazon will charge developers $.50 for every million messages published, and $.50 for every million messages delivered. In other words, $1.00 total per million messages after the first million.

“Many customers tell us they build and maintain their own mobile push services, even though they find this approach expensive, complex and error-prone,” stated Raju Gulabani, Vice President of Database Services, AWS. “Amazon SNS with Mobile Push takes these concerns off the table with one simple cross-platform API, a flat low price and a free tier that means many customers won’t pay anything until their applications achieve scale.”