Once each
Every row and every column holds each letter exactly once. The leftover cells stay empty.
A daily logic puzzle · iPhone, iPad and Android
Sudoku-deep.
Bite-sized.
One new puzzle a day, the same one for everyone. Place each letter once in every row and column, read the clues around the edge, and never once have to guess.
How it plays
Three rules, one answer
The whole game fits on a postcard. The in-app walkthrough teaches it on a tiny puzzle in about a minute.
Peek past the gaps
A letter outside the grid is the first one you’d see looking in from that side. Empty cells are see-through, so a clue can point several cells deep.
B×BAC
Never guess
Every grid is checked by a solver to have exactly one solution, and graded by the reasoning it takes rather than the clues it hides.
The week
A puzzle that grows all week
Each size appears twice: smooth on the first day, twisty on the second, when it takes a few what-ifs to crack. Sunday finishes on a seven-by-seven Expert.
- Mon Easy 4×4 A–C Smooth
- Tue Easy 4×4 A–C Twisty
- Wed Medium 5×5 A–C Smooth
- Thu Medium 5×5 A–C Twisty
- Fri Hard 6×6 A–D Smooth
- Sat Hard 6×6 A–D Twisty
- Sun Expert 7×7 A–E Twisty
Inside the app
Five minutes with your coffee
- New puzzle
- Daily
- Guessing needed
- Never
- Ads or tracking in the app
- None
- Works offline
- Yes
Free and Pro
Free every day. Pro if you want more.
Free
- Today’s puzzle, every day
- Streaks, stats and Game Center rankings
- Three Extra Peeks a day, Easy and Medium
- A hint on every puzzle
Pro One purchase · no subscription
- Every past daily, in the archive
- Streak repair: solve a missed day within a week
- Unlimited Extra Peeks, Hard and Expert included
- Unlimited hints on Extra Peeks, three a day on the daily
Questions
Before you download
Is it really one puzzle a day?
One daily puzzle, the same for everyone, new at midnight Melbourne time. If you want more, Extra Peeks are fresh practice puzzles on demand: three a day on the free version, unlimited with Pro.
Do I ever have to guess?
No. Every grid is checked by a solver to have exactly one answer, and graded by how much reasoning it takes, so Easy stays easy and Sunday’s Expert earns the name.
Is Pro a subscription?
No. Pro is a single purchase, kept for good. Restore it free on any device signed in to the same store account.
Does it work offline?
Yes. Puzzles are made on your phone. The network is only used for purchases and the optional Game Center rankings.
What does Peeks collect?
Nothing. No ads, no analytics, no account. Your progress stays on your device. Privacy policy.
Is it accessible?
Peeks supports VoiceOver, follows Reduce Motion, and works in light and dark mode. The pieces are letters, so the board never relies on colour alone.
Anything else: Peeks support.