Handles everything around your book so you can spend more time actually creating it.
Free calculators for KDP spine width, interior margins, and gutter, using the same formulas Amazon publishes, so your cover and interior match your book's real trim size and page count before you upload.
Calculate your real KDP royalty after Amazon's cut and printing cost, not just your list price, across paperback, hardcover, and every KDP marketplace.
Turn your finished page images into a KDP-spec-correct interior PDF, built automatically at the exact trim size, margins, and bleed your book needs.
Turn a .docx manuscript into a valid, ready-to-upload EPUB with a real table of contents and Kindle-compatible navigation.
Upload your actual formatted interior PDF and check it against KDP's real trim sizes and page count limits before you upload to Amazon.
Upload your real KDP sales and Amazon Ads reports to see your true net profit, which targeting types are actually converting, and where your ad spend is quietly losing money.