SI Certs primarily monetizes by selling online test prep courses for construction inspectors aiming to pass certification exams. These courses are delivered online, providing flexibility for students to learn at their own pace without the need to attend a physical classroom. The company captures a niche market by offering specialized courses for exams such as the Certified Welding Inspector (CWI) exam and the Special Inspection exams. These online courses emphasize accessibility and convenience, allowing the company to operate with lower overhead costs compared to traditional in-person training programs.

SI Certs leverages a freemium model for some courses to attract new users, particularly with the introduction of a free course for a new exam added by the ICC. Providing a free course helps in capturing potential customers early in their certification journey, with the anticipation that they will upgrade to paid courses for more detailed and comprehensive exam preparation. This strategy helps in building trust and demonstrating the value of their offerings before customers make a financial commitment.

In addition to their online courses, SI Certs offers custom tutoring support via Intercom chat, providing direct assistance for students who need extra help. This personalized support service adds significant value to their product offering, setting them apart from competitors and contributing to their customer retention and satisfaction.