Canonball is a literary companion for serious readers. Track your books, find Whispersync pairings, build vocabulary, and run book clubs.
One app for the full reading experience, from discovery to discussion.
Search for books available in both Kindle and Audible Whispersync format. Community-verified pairings so you know exactly which edition to buy before you commit.
Read guides
Log reading sessions, track streaks, and watch your progress across every book you are working through. Consistency compounds.
Read guides
Daily sessions built around words drawn from classic literary texts. Each word is presented with the original quote from the source book so the context does the teaching.
Read guides
Create a club, run a snake draft to pick your reading calendar, coordinate schedules, and host wrap party quizzes when the group finishes a book.
Read guides
When your club finishes a book, build a quiz from community-submitted trivia, plot, and vocabulary questions. Host it live and compare scores.
Earn badges, complete season challenges, and submit pairing verifications to help the community know which Whispersync editions actually work.
Whispersync lets you switch between Kindle and Audible on the same book without losing your place. Canonball is built around finding which books support it, so you never buy the wrong edition.
Browse Whispersync guidesReading tips, Whispersync deep-dives, and literary commentary from the Canonball team.
Visit the blog