Preview
As seen through the Display Open live preview ↗A live render at the true 600×600 Display size. On the glasses the dark areas are fully transparent — only the bright UI floats over the real world. If it stays blank the app blocks embedding; use the link above.
About
The classic 9×9 logic puzzle, generated fresh every time with a guaranteed unique solution. Pure D-pad: arrows move the cursor, Enter drops into edit mode where Up/Down cycle the digit (blank, 1–9) and Enter commits. Clashing numbers glow red so mistakes are obvious. Easy, Medium and Hard; your puzzle and difficulty persist so Continue resumes exactly where you stopped.
Features
- Every puzzle has one unique solution
- Easy / Medium / Hard
- Live conflict highlighting
- Resume an in-progress puzzle
- 100% offline — no login
Good to know
- No pencil/candidate marks yet
- No hint or auto-solve (by design)
Data safety
No third-party sharing. Herald doesn't sell or share your data, and there are no ads or trackers.
Minimal collection. Only what a linked service needs — provider tokens are encrypted on Herald's server and never stored on the glasses.
Encrypted in transit. All traffic is HTTPS.
You're in control. Disconnect any linked service at any time from the companion.
Ratings & reviews