Project Schedule - Office Plugin is a free Android app plugin developed by CloudOn Inc in the Business & Productivity category. It is designed to work with the main app Project Schedule. The primary function of this plugin is to enable the import of MS Project files with the mpp file extension and reading/writing of MS Excel files. However, it does not allow writing changes back to an mpp file.

It is important to note that opening complex projects can lead to an out of memory exception. In such cases, users are advised to save their project as an xml file and import it with "MSPDI-XML-Import." Project Schedule - Office Plugin uses code from the open-source projects MPXJ and Apache POI, both of which are well-regarded in the industry. Despite its limitations, Project Schedule - Office Plugin is a valuable tool for those who need to import MS Project files and work with MS Excel files on their Android devices.