Learn smarter,
remember more
Free tools and proven techniques to supercharge your memory and accelerate learning.
See it in action
A look inside the app — palaces, training, the database, and your progress.
Your dashboard
Meet Capiu — the memory app
Build and organize memory palaces, turn numbers into vivid images from a 50,000-entry database, train memory sports solo or against friends, and track your progress over time.
50,000+ curated entries
Search a hand-curated, multi-language Major System database — every entry rated for vividness and broken down by IPA.
See exactly why a word fits a number: concrete things you can picture, not abstract dictionary filler.
Try it — no sign-in needed →Subscribe to numbers
Watching a tricky number? Subscribe and get notified the moment a vivid word lands in the catalog.
Track as many empty slots as you like — we'll let you know as each one gets filled.
Your number list
Pick your favorite word for every number, synced across all your devices.
Supersede earlier picks as you find better images. Your list feeds straight into the Dojo's number drills.
Memory palaces, mapped
Build palaces from places you actually know and pin each locus to a real spot on the map.
Spatial encoding is what the research says works. Your loci stay on your device — private to you.
Calendar palace
Link a palace to the calendar and anchor dates to places you can walk through in your mind.
Lock in birthdays, anniversaries, and historic dates — each one pinned to its own day of the year.
The Dojo — train like a memory athlete
Memorize-then-recall drills across the memory-sport disciplines — train solo or go async head-to-head with friends.
Drill on real historic dates so training time is never wasted, or narrow it to the numbers in your own Major list — with your images one tap away to check yourself.
Help the database grow
Spot a missing word? Suggest it in a couple of taps.
Curated suggestions land in the public catalog, credited to you — the database grows with the community.
Track your progress
Coverage charts, weekly summaries, and achievement badges across Major, palaces, and the Dojo.
See exactly which numbers are still missing and which records are climbing — then finish what you started.
Community
Top pickers, top contributors, and public profile pages with badge walls.
Claim your handle and your own /u/ page — a badge wall that shows what you've mastered.
Tools
Standalone tools — work offline, no account needed.