This iPhone application is a social scheduling, planning, calendar tool that uses Google Maps to sync location with your calendar. Plannr is essentially a calendar tool that allows you to share and make plans with your friends.
Using Plannr you can coordinate your plans with your friends using a calendar, email, SMS and Google Maps. if you are planning a night out with friends you can use Plannr to organise your schedule and keep your friends updated with your plans and location.
The iPhone application is free and you can also access the service via the desktop. To subscribe to the service you can sign in with your Facebook account.