Canonball is the literary companion for serious readers — track your books, discover Whispersync pairings, build vocabulary, and run book clubs.
One app for the full reading experience — from discovery to discussion.
Find every book available in both Kindle + Audible Whispersync format — switch between reading and listening without losing your place.
Log your reading runs, track streaks, and see your progress at a glance across every book you're currently reading.
Master words from the books you love. Daily vocab sessions pull from your reading list and quiz you with context from the actual text.
Create clubs, run snake drafts to pick your reading calendar, coordinate schedules, and host live wrap-party quizzes.
Finish a book? Test your club with 3-round quizzes — vocabulary, comprehension, and trivia. Compare scores and crown a winner.
Earn badges, complete season challenges, and submit bounties to help verify Whispersync pairings for the community.
Whispersync lets you switch between Kindle and Audible seamlessly. Canonball is the only app built around discovering which books support it — so you never miss a pairing.
Available soon on iOS and Android. Free to download.
Coming soon to
App Store
Coming soon to
Google Play