ImTunedIn is a free site for musicians of all levels and everyone who is connected to the music industry. In future, you have the option of making purchases related to enhancing your profile, business, jobs, bookings and other feature enhancements in the pipeline on the app or the web.
In addition, if you choose to use ImTunedIn's app, BandCal Mobile from your mobile phone, keep in mind that you'll be responsible for any fees associated with internet usage and/or text messaging as determined by your mobile carrier.