Authentication for application downloads

Embodiments described herein disclose technology for verifying authorization of an application download. The system can receive from a device associated with a user, a request to download an application. In response to a first instance of the application being downloaded on the device, the system can assign a unique identifier to the first instance of the application. After the application is downloaded and prior to granting the person requesting the application download access to the first instance of the application, the system can request via the first instance of the application identification information and particular authentication information to verify that the person requesting the application download is authorized to do so. In response to verifying that the person requesting the application download is authorized, the unique identifier can be associated with the account, user and/or device to result in a verified download of the first instance of the application.