Most books fail not on the text but on demand. Validation flips the order: check first, then write. This guide explains how to read the score.
The four signals
Demand — search volume and trend over 24 months
Competition — title density and quality of top sellers
Price band — what the market will pay
Differentiation — open angles and uncovered subtopics
Where the data comes from: the craft database
These signals don’t appear out of nowhere. Chaptrix maintains its own knowledge base — the craft database — which continuously collects and organises markets, topics, search trends, top titles and prices. Picture it as a large, well-sorted library about the entire book market.
Chaptrix pulls more than the score from that library. It also suggests fresh topics and subtopics, finds related niches that are still open, and even names possible contacts and multipliers for later — blogs, podcasts or communities in your field. So no book starts from zero; it starts on a solid base of data.
Reading the score
A value around 0.85 means: write. Around 0.45: differentiate or switch topic. The score doesn’t decide for you — it gives you the data to decide with confidence.
The best book is useless if nobody is looking for it.
Combine the score with your expertise: where an open niche meets real knowledge, you get books that rank and last.