The Book Test Library is a POWERFUL new system that allows you to know any word anywhere in a plethora of regular books! It is an archive of book info that is constantly expanding and evolving with new titles all the time, including support from other magic app developers to use these powerful tools in their apps...

Plus, if you own any of the BTL books or have a subscription to the library, you also get access to the Book Test Library app for FREE, which allows you to secretly look up word positions or words at positions using a variety of secret methods.

Below is only the titles available for individual purchase, library subscribers have access to many more. Click here to see the full list of titles available as part of the subscription.

Want to get a FREE SUBSCRIPTION to the Book Test Library? You can send us your books to add! Click here for the details!

Note: If you own a Versa remote, you can purchase books outright and use the Book Test Library tool in your account to generate files for uploading to your remote (allowing you to reveal predicted words on your device or someone else's). A subscription gives you access to the app and api, but not to the book test files, those require a purchase of the title outright.