Taskinator

A phone number based task manager app, good for roommates, small teams, and groups who take turns in doing work. You can form groups with your contacts and allocate task for every group. Tasks will be automatically scheduled for every member in a group in a circular way, so everyone gets a chance. Group members will be reminded with notifications when it's their turn to do the task and options are available to buzz others in the group to remind them or update about the task status.