The best alternatives to Letterfall are Wordle, Retrogram, and Wordbreeze. 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
Think you're a word nerd? Make as many words as you can using seven letters Retrogram is a daily word puzzle. We make a new puzzle each day, find interesting stories behind the words, and publish them for you to play Available for iOS & Apple Watch
Endless word puzzles to play alone or co-op with friends. Unlock difficulty up to 7 letters, share puzzles with friends or use SharePlay over FaceTime. Earn and use clues tactically to keep your streak alive! One time IAP to unlock unlimited games a day.