Play by connecting color pairs with lines on a grid. Complete puzzles by matching and linking colors without overlaps. Track progress and unlock new challenges. Share achievements and compete with friends.
Study vocabulary or sentences by masking them with adjustable lines. Change line color based on accuracy. Automatically adjust lines for PDFs and fix angles. Batch mask content using search. Import files from cloud storage or device.
Explore detailed information about including capital, flag, bird, fun facts, national parks, universities, local food, weather, and time. Learn about US and compare by area and population.
