Solve logic grid puzzles similar to Einstein's famous zebra puzzle "Who has the fish?" on your iPad, iPhone or Apple TV!



6 riddles (Logicals):
• 2x easy (4 values per category)
• 2x medium (5 values per category)
• 2x hard (5 values per category)
• additional levelpacks available via in app purchase

36 riddles (Logicals Pro):
• 15x easy (4 values per category)
• 6x medium (5 values per category)
• 15x hard (5 values per category)
• additional levelpacks available via in app purchase

3x3 layouts:
• classic
• wood
• night
each in the variants
• full/empty
• plus/minus
• check/cross

2 languages:
• german
• english

easy solving of riddles by tapping:
• tap once for "does not match"
• tap twice for "matches"

additional features:
• timer and Game Center support
• current state can be checked at any time
• solving table as assistance for a better overview (iPad only)

completely free of ads!

compatible devices:
• iPhone 5 or newer
• iPad
• iPad Pro
• Apple TV 4
(requires iOS9/tvOS9 or higher)


If you like the app, please leave me a good review!

If you have questions, problems or suggestions, please contact me by email to

Follow me on Twitter: #luethslogicals

New riddles are in progress and coming soon!

What's New

Version 5.0.2

• BUGFIX: the screenshot inside the feedback mail was not shown correctly

New in 5.0.1:
• BUGFIX: the buttons inside the tutorial were not shown
• NEW: preview videos

New in 5.0.0:
• NEW: improved handling on iPhone (pinch to zoom)
• NEW: autocomplete feature: if the 3 boxes of the first row are solved, you can automplete the matrix
• NEW: the chosen layout will be applied in the whole app now
• NEW: In-App Shop overhaul

If you like the app, feel free to add an app review. If you have problems or suggestions for improvement, please contact me by sending an e-mail to

I wish you a lot of fun while solving the new puzzles!

Ratings and Reviews

4.4 out of 5

559 Ratings

559 Ratings

Elegant and functional


I have tried several logic puzzle apps and this is the best, hands down. It is easy to use, even on a phone screen, given with the ability to zoom in and out in a systematic fashion or swipe between puzzle blocks. It is also elegantly designed. Bravo!
Edit: I've pulled the review down a star because there are no hints available similar to other leading puzzle apps. There are occasionally awkward translations though the underlying meaning is almost always clear. This is still my preferred puzzle app, though. Do try it!

Functional but a bit basic


A few fairly straight forward puzzles - 6 available for free before having to buy more. Sadly, you have to zoom in and out of each 5x5 section to mark anything, meaning you have to memorise what you want to check and slowing things down quite a lot.

Mindbenders...not...but logical!


This game is really great if you want to focus your mind and want something different from a cross word puzzle.
I think the number of checks should be limited to make it harder! Excellent brain training app.

In-App Purchases

X01: MegaPack Vol. 1

contains all 60 puzzles of L01, L02, L03, L04


L01: PuzzlePack Vol. 1

2x easy • 5x medium • 8x hard


L02: PuzzlePack Vol. 2

3x easy • 5x medium • 7x hard


L03: PuzzlePack Vol. 3

5x easy • 5x medium • 5x hard


L04: PuzzlePack Vol. 4

5x easy • 5x medium • 5x hard


L05: PuzzlePack Vol. 5

4x easy • 5x medium • 6x hard



Christian Lueth
34 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch. Apple TV.
English, German
Age Rating
Rated 4+
© 2017 Christian Lüth
In-App Purchases
  1. E00: ProPack "Easy" £0.99
  2. M00: ProPack "Medium" £0.99
  3. H00: ProPack "Hard" £0.99


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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