B2C (business-to-client) tutors teach private students. These include students from the English Score initiative. All tutors on Fluentify start as B2C tutors. 

B2B (business-to-business) tutors, also known as PRO tutors, teach students from businesses who have bought packs of tokens with Fluentify. They also teach some private students which they began teaching when they were B2C tutors.