Terms of use

Sunthread uses Apple's Standard Licensed Application End User License Agreement.

Atlas permanent unlock

The first 12 campaign puzzles and today's daily light are free. An optional one-time Atlas purchase permanently provides the full 60-puzzle campaign, two additional generated daily puzzles, and a rolling 30-day archive.

The localized one-time price appears before purchase. Payment is charged to your Apple Account. There is no subscription or renewal.

Purchases can be restored with the Apple Account that purchased them. A refund or revocation removes paid access; your saved progress and free puzzles remain.

Daily puzzles

Puzzles are generated on-device from a UTC date. Daily content changes at midnight UTC and needs no content download. Progress currently stays on one device.