Blurbsprint

Blurbsprint is a web app (with optional mobile companion) that helps self-published authors write and validate high-converting book descriptions, subtitles, and keyword sets for Amazon/Kobo. It combines AI drafting with hard constraints: genre-specific blurb templates, trope libraries, and a “market fit” checker that compares your copy against top-performing books in your niche (structure, length, promise, readability, and taboo claims). You paste your draft blurb, pick your category and audience, and the app produces 5-10 variants plus a compliance scan to reduce ad disapprovals and misleading claims. The killer feature is lightweight A/B testing: generate two blurbs, push them to a landing page, and track click-through from your ads or newsletter before you lock in metadata. It’s not a magic sales machine; it’s a practical conversion tool for authors who already market.