1-liners at Mac App Store analyse

App power index: 220 (based on ranks around App Stores today)
Games Entertainment Puzzle Strategy
Developer: aaartful
Price: 0 free
Current version: 1.3, last update: 7 years ago
First release : 03 Apr 2009
App size: 219.47 Kb
4.4 ( 4734 ratings )
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Estimation application downloads and cost

> 4.84k
Monthly downloads
~ $ 1.98k
Estimation App Cost


Train your brain with this classical line-drawing puzzle! Trace the shapes by drawing each line once and only once. As you progress through the levels, things will become increasingly difficult, and you will no longer be allowed to cross already drawn lines. Only a true master of tracing can pass all 40 (as of version 1.3) levels!

A bit of history: known as The House of Santa Claus, this is an old German drawing game, originally intended for children. These drawings are also referred to as Euler paths, from the Swiss mathematician Leonhard Euler (1707-1783). Euler worked on the Konigsberg bridge problem, which concerned finding a tour around the city of Konigsberg, crossing all seven bridges in the city once and only once. Euler managed to find a set of rules to determine whether a graph can be traversed in one go or not. Now it is up to you to find your way through these paths and claim the title of Master Tracer!
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Available in countries
Country Price
USA 0.99 USD
Available for devices
iPhoneFirstGen, iPodTouchFirstGen, iPodTouchSecondGen, iPhone3G, iPhone3GS, iPadWifi, iPad3G, iPhone4, iPodTouchThirdGen, iPodTouchFourthGen, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus,