Rankforest: Sales Rank Tracking and Market Research for Authors, Publishers, and Analysts. Market and Promote Your Book With Amazon Sales Rank Data.

Easy sales rank tracking Rankforest is the smart way to monitor market performance and Amazon sales trends. View historical data, export, read reviews, set up alerts, compare multiple titles. Sales trends and market analytics at your fingertips, updated frequently. Books and more. Track your book and view charts from several online retail outlets. Browse tracked items by rank, date added, and more

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オンライン書店のデータを使って本の売れ行きを分析。