Engage with your retirees and provide them with a tool that will keep everyone up to date with the goings on of your community by creating an your own app.  Publish all the information you would in monthly/weekly newsletters and be able to update residents in real time.  Other services your mobile app can include:

• Send push notifications for community updates (e.g. water outage)
• Create a custom form to receive maintenance requests
• Link to external URLs for available home listings, bill payment,  etc
• List all clubs available to residents in the community  (You can use a business listing or expandable listing)
• Events section has the ability to provide for RSVPs, linking to ticket sales, and even can allow guest to create their own events (optional feature)