This comes straight from Everest’s own GitHub page — it’s free. Need help installing? →
What it looks like
About this app
Everest gives you number puzzles that start gently and climb steadily, with no hints for sale and no adverts.
It works offline and is genuinely tricky.
From the app’s home page
- See the codeHow it’s made — every line is public
- Questions & commentsTalk with the people who make it
- Report a problemTell the makers something is broken
- All versionsOlder downloads and what changed
- LicenseThe rules for using and sharing it

