Amber Book
Subscription-based test prep platform for architects studying for the six ARE licensing exams, featuring 50+ hours of animated content, flashcards, and practice questions.
Est. Valuation
$21.8M
$21,780,000 · 5× ARR estimate
Monthly Revenue (MRR)
$363K
$363,000/mo
Annual Revenue (ARR)
$4.4M
$4,356,000/yr
Employees
4
Founded
2015
Amber Book Revenue History
Revenue history for Amber Book from 2022 to 2026.
| Year | MRR | ARR | YoY Growth | Source |
|---|---|---|---|---|
| 2022 | $363,000 | $4,300,000 | — | Feb 2022 |
How Amber Book Makes Money
Amber Book Funding
Amber Book is fully bootstrapped with no outside funding. The company has grown to $4,356,000 ARR organically.
Amber Book Founders
Michael Ermann
Founder
Amber Book FAQ
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How We Estimate Amber Book's Revenue & Valuation
Profitable tracks revenue, valuation, and other key metrics for thousands of companies using a layered confidence model. Each revenue figure on this page is tagged with one of three confidence levels:
- Verified — directly confirmed via Stripe integration or audited filings.
- Self-reported — numbers publicly shared by the founder on X, blog posts, or interviews.
- Estimated — derived from publicly available signals (traffic, employee count, pricing, comparables).
Valuation follows a hierarchy: public companies use the live market cap; private companies with disclosed funding rounds use the last reported valuation; otherwise we apply a conservative 5× ARR multiple as an estimate. Multiples vary by business model — SaaS typically sits 5–7×, profitable bootstrapped operations 3–5×, consumer brands 1–3×, marketplaces 8–12×.
These are estimates, not official figures. Official numbers — when available — will always override estimates.