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Last Software Update: 9th September, 2019.

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Join 20,043+ authors

already enjoying a competitive advantage with KDSPY.

"Amazing software... one of the best resources an author can have." – Geoff Shaw

✅ Find out what books are selling – with revenue estimates – on Amazon right now. 

✅ Find the "profitable" book niches, sub-genres and keywords to improve your sales

Reverse engineer the bestsellers in any of the 25,000+ book or Kindle categories, author pages & keyword search results. 

Generate consistent sales & grow your audience by writing books people want.

Save time on book research with our "one-click" market research plugin.

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Chrome Compatible

Copyright 2019 © LeadsClick LTD.

Registered in England and Wales, Company No: 09309821.
Trading as Publishing Altitude. All Rights Reserved.

Registered Address: 20 Castell Road, Loughton, IG10 2LT, UK.

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KDSPY (known previously as Kindle Spy) is not affiliated with Amazon or any of its subsidiaries.