Systems and methods for providing time-shifted data downloads over cellular networks are disclosed. The downloads can be selected using an application or other data consuming application with a “download later” feature, or similar. The application can register with a data shifting service (DSS) to receive a low-priority, or “0-rated,” download of the data. The DSS can place the application in queue waiting for predetermined network conditions (e.g., network utilization to fall below a predetermined level). Upon occurrence of the predetermined network conditions (e.g., network utilization falling below a predetermined rate), the DSS can inform the application that a low-priority download window is available. The application can then download the data from a content provider. The DSS can enable cellular networks to increase average network utilization, while reducing peak demand. The system may offer low-priority downloads at reduced cost, or free, to incentivize use of the DSS.