價格：免費
檔案大小：10.7 MB
版本需求：需要 iOS 8.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Knot a Problem is an app for quickly designing and creating a Celtic knot.
Design your knot by drawing in the "walls" where the crossings shouldn't be.
Make your knot bigger or smaller, and customise the colour scheme. Export as a picture, or export the code to create your knot in a TeX document.
Learn about Celtic knots by experimenting with different designs.
支援平台：iPhone, iPad