App: Logicals Pro
Developer: Christian Lueth
Genres: Games, Trivia, Word, Entertainment

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

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Features:

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:
• light
• coffee
• dark
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)

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completely free of ads!
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compatible devices:
• iPhone 5 or newer
• iPad
• iPad Pro
• Apple TV 4
• iMac, MacBook, Mac Mini
(requires iOS 12.0 / tvOS 12.0 / macOS 11.0 or higher)

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

If you have questions, problems or suggestions, please contact me by email to logicals@icloud.com.

Release notes:
• BUGFIX: if the question if the user really wants to reset the puzzle was answered with 'No', the loading screen was not hidden anymore (thanks to Robin for the hint!)
• BUGFIX: PuzzlePack M02 was not unlocked correctly

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 logicals@icloud.com.
Enjoy solving the puzzles!