Join.me is a simple meeting platform providing free Video Conferencing. It also includes audio and video conferencing by phone or internet (VoIP) for real time experiences. You can share your screen with participants on audio and video simultaneously; create and host meetings with a single tap or join an existing meeting by typing the meeting code; and share your screen at the tap of an orange button where attendees can see the screen of your phone/tablet. Open docs, sheets, slides, websites, etc. Attendees can follow and see everything you do. The free version has certain restrictions.
Android : http://bit.ly/2x7uiIF
iOS : https://apple.co/2xavOJS