Digital photos have become increasingly common and popular in mobile communications. However, due to the distribution of these photos captured in various devices, there is a need to develop new technologies to facilitate the sharing of large image collections across these devices for users. In this paper, we propose A Synchronous Approach for Photo sharing across multiple devices (ASAP). The ASAP provides a hierarchical two-level synchronization scheme, namely image-level and region-level. In the ASAP, a user?s interaction with any device automatically leads to a series of synchronous updates in other devices. Thus, the ASAP simultaneously presents similar images across devices in a way that allows automatic synchronization of images based on user interactions. Experimental evaluations indicate that it is effective and useful to improve image browsing experience across devices for users.