2025-03-08 00:00:00 Stay connected on the go with the Ooma Office business mobile app. Whether you’re at home, at work or somewhere else, you’ll be able to access the #1 rated business phone service right from your smartphone. Starting at just $19.95/user/month. Keep collaborating. Co-workers can easily stay connected with group messaging, group calls and extension dialing, letting you connect to colleagues whenever you need to from wherever you are.