Daily Quirk
A new puzzle every day. Turn on a gentle daily reminder if you like; it is off by default.

120+ logic puzzles in one calm app
Quirk is a calm collection of 120+ logic puzzle types in 14 groups. Play grid classics like Sudoku, Nonogram, Bridges and Tents, number puzzles like Kakuro, and word, pattern, memory, route and code puzzles, many of them new.
Fair by design
Every puzzle has a clear rule and a fair path to the answer. When you get stuck, Quirk helps you see the next step instead of giving the answer away.
Each puzzle type starts with a short introduction and a practice board. The rules stay one tap away.
There is no time limit. Undo a move or reset the board whenever you like. Your progress is saved on your device.
A hint first shows where to look. Explain this step tells you why, and Use this step can make the move. You earn a hint every three solved puzzles.
A real Bridges board from Quirk. Each number says how many bridges touch that island. Bridges never cross, and two islands share at most two bridges.
This 3 already has two bridges to the 5. It needs one more.
A bridge up would cross another bridge. The 5 already has its two. Only one way is left.
So the last bridge goes down to the 1. Certain, with no guessing.
120+ puzzle types
From classic grids to codes, routes and words. Turn puzzle types and whole groups on or off, so you get more of what you enjoy.
Every day
A new puzzle every day. Turn on a gentle daily reminder if you like; it is off by default.

Puzzles grow harder as you do, and you can always make them easier. Stuck on one? I'm stuck offers another puzzle or one step easier.
Choose the puzzle types and groups you want to see. A puzzle you started waits until you turn its type back on.
Send a puzzle to a friend. They play the very same board and see your time and hints. It never counts toward their own level.

A look inside
Real screens from the app. Scroll sideways for more.
Made for everyone
Free to play
Your first 30 solved puzzles are ad-free. After that, a short ad may appear between puzzles, never during one.
Privacy
There is no sign-up. Your progress, settings and results are kept on your device.
A problem report is sent only when you tap Send report, and you can read it first.
Anonymous puzzle statistics stay off until you choose to share them. Quirk asks once, and you can change your mind any time in Settings.
Ads come from Google AdMob, with Google's consent message where needed. Ad-free stops Quirk's ad requests.
Yes. Quirk is free to download and play. Your first 30 solved puzzles are ad-free; after that a short ad may appear between puzzles. Quirk Ad-free is a one-time purchase that removes all ads for good.
Not at all. Every type starts with an introduction and a practice board, hints explain the next step, and you can make puzzles easier whenever you like.
Yes. You can play without a connection and without an account. Ads, purchases and sending a problem report need the internet.
Not yet. Quirk is coming soon to Google Play for Android and to the App Store for iPhone and iPad. This page will link to both stores as soon as Quirk is available.
Yes. Quirk is made for Android, iPhone and iPad. This page will link to the App Store as soon as Quirk is available there.
Yes. Quirk has no account and no sync of its own, so you move your progress with a backup file. Open Settings > Your progress > Back up progress on the old device and Restore progress on the new one. The same file works on Android, iPhone and iPad.
Connect to the internet, use the same Google Play account or Apple Account that bought it, then tap Settings > Ad-free > Restore purchases. A purchase stays with its store: Ad-free bought on Google Play does not carry over to an iPhone, and the other way round.
Quirk is available in 41 languages and regional variants. Word puzzles use English words.
Open Settings > About > Report a problem in the app. Say what you did, what you expected and what happened. You can read the report before you send it. Or email info@cjcommercestudio.nl.
120+ puzzles, one calm mind. Start with the first one today.