The best alternatives to Speedcube are Braille Cube, Go Cube, and RUBEK. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
GoCube is the classic cube reimagined and redesigned for the 21st century - a Smart and Connected Cube. Buy the incredible smart connected cube! Track your moves in real-time and learn how to solve our connected Rubik’s cubic using our app!
Spingram is a mobile puzzle game which aims to reinvent the Rubik's cube in a cool and innovative way. The gameplay is simple: swipe to rotate the puzzle until you match it to the reference pattern of every of the 800 unique levels the first release offers.
Cube Buddy is a free web-based Rubik’s Cube learning aide designed for beginners. It simplifies the learning process by presenting a simplified, stage-by-stage method via a combination of diagrams, written instructions and short how-to videos.