Amber Book Revenue (2022)

Amber Book reported a 30-day revenue figure of $363,000 for the period ending in January 2022, which annualizes to a run rate of $4.3 million. The same 30-day window one year earlier produced $220,000, reflecting year-over-year growth of approximately 65 percent on a monthly basis. Full-year 2021 revenue was $3.8 million, and the company grew 113 percent between 2020 and 2021.

Michael Ermann is the founder of Amber Book and serves as its operating leader, though he has described himself primarily as a professor rather than a CEO. He has taught at Virginia Tech for 21 years as of 2022 and holds the title of faculty member under Virginia state rules that cap outside business activity at 8 hours per week. Ermann is 48 years old as of the January 2022 interview.

Eermann began developing course content for Amber Book in 2014 after years of teaching in-person continuing education courses for architecture exam candidates across the country. He partnered with a student animator to produce the platform's animated curriculum and launched commercial sales in 2015. He described the 12-year development arc as complete as of late 2021, noting he had just finished the core Amber Book curriculum in the month before the interview.

In parallel, Ermann developed a separate SAT and ACT preparation course for high school students using the same visual-learning methodology, which he described as recently completed at the time of the interview. No revenue figures for that product were disclosed. Ermann's net worth was not discussed in the interview; any estimate would require confirmed ownership percentage and a verified valuation, neither of which was provided.

Amber Book had approximately 150 firm clients as of January 2022, with Ermann citing 149 firms and rounding to 150. Individual sign-ups in 2021 totaled 4,900, comprising 2,800 direct individual enrollments and 2,100 individuals enrolled through firm licenses. Cumulative total enrollment across the platform's history stood at 16,000 students, supported by more than 3,000 positive reviews.

Individual subscribers pay an average of $250 per month on a monthly subscription basis. Firm licenses are priced at approximately $2,400 per year per firm on an all-you-can-eat model. Ermann noted that the firm license is structured as evergreen B2B SaaS, while individual subscriptions carry an implicit expectation of completion: students are expected to pass their exams and stop paying, which Ermann described as a feature rather than a problem. Weekly live Zoom group sessions draw 200 to 300 attendees, supplementing the self-paced course content.

Amber Book operates two revenue streams. The first is individual monthly subscriptions at an average of $250 per month, which Ermann characterized as content as a subscription. The second is annual firm licenses averaging $2,400 per firm, launched in 2019, which function as all-you-can-eat access for all employees at a subscribing architecture firm. Firm licenses represented approximately 15 percent of the $4.3 million ARR as of January 2022, or roughly $700,000 annually, with the remaining 85 percent from individual enrollments.

Monthly churn across the platform is below 1 percent, which Ermann stated as of January 2022. The company reported a 90 percent EBITDA margin. Ermann attributed growth primarily to word-of-mouth virality: individual subscribers who pass their exams recommend the platform to colleagues at their firms, which then convert to firm licenses. He stated that until approximately one month before the interview, Amber Book had no marketing spend. The firm license segment is described as the fastest-growing portion of the business.

The platform employs 3 to 4 people on payroll and approximately 4.3 full-time equivalents including contractors. Gross margin and CAC were not discussed in the interview. LTV was not discussed explicitly, though the sub-1 percent monthly churn implies an average individual subscriber tenure of more than 100 months at steady state, which Ermann acknowledged is not the intended use case given the exam-completion model.

Amber Book had 3 to 4 employees on payroll as of January 2022, with total staffing including contractors equivalent to approximately 4.3 full-time equivalents. Ermann noted he counted himself among the 4.3 FTEs. The company operates with Ermann contributing no more than 8 hours per week under Virginia state faculty rules governing outside employment.