The best alternatives to Digraphs are PooTime, Words With Friends 2, and Wordbase. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— The most accurate API for conversational speech-to-text
Words With Friends 2 is better and more clever than ever with all new game modes built for the word player in all of us. Beautifully and intelligently redesigned, Words With Friends 2 is teeming with more ways to challenge your friends and your brain than ever before.
wordbase.app Fan re-make of discontinued word game, Wordbase. Take turns spelling words across a grid of letters, the first player to reach the opponent's side wins. Build up a strong base and cut off your opponent's tiles to gain the advantage.