Kindle Series Sale Tracker

Kindle Series Sale Tracker helps you organize your Amazon.co.jp Kindle library by series. Identify owned volumes, check for follow-up releases, and see prices and discounts — all locally in your browser, without any server. Features: • Scan your Kindle library from the Amazon.co.jp digital console with one click • Automatically detect series and estimate owned volume ranges • Check next-volume availability with price, discount rate, and release date • Estimate the total cost to complete an unfinished series • Mark series as completed, priority, or excluded • Export your series list as CSV or JSON • Sidebar panel and dedicated options page • Opt-in background check for new volumes and sales (badge notification) • Each scheduled background cycle checks every eligible series in throttled batches of eight • Opt-in auto-scan when visiting the Kindle library page • Automation status display — trigger decisions, running/completed/failed state, skip reasons, and result counts — in the sidebar and options page Privacy: All scan results and settings are stored locally in your browser (chrome.storage.local). No data is sent to any external server. Background checks also target only Amazon.co.jp pages, with results stored locally. Amazon credentials, cookies, and purchase history are never stored or transmitted to the developer. Note: This extension depends on Amazon.co.jp page structure. Changes on Amazon's side may affect library scanning or follow-up checks. Prices, discounts, and release dates are shown only when retrievable from Amazon.co.jp search results. This extension is designed for Amazon.co.jp (Japanese Kindle store) only.