Techniques are described for managing lifecycles of offline data on mobile devices. In some implementations, offline data instances stored at a mobile device are monitored based on a set of memory management rules. A memory management process maintains an offline data instance table identifying each of the set of monitored offline data instances stored at the mobile device and associates each instance with a timestamp identifying a most recent time of access satisfying at least one access type as defined in the set of memory management rules. In response to determining that a trigger associated with performing a memory management process has occurred, a period of time parameter from a last access corresponding to deletion is identified. The parameter is compared to a current time and the most recent time of access for each instance, and instances where the comparison meets or exceeds the period of time parameter are deleted.