Tweetbot and Twitterific were killed by Elon Musk with no warning and no conscience. The companies that made them will face ruinous automatic App Store refunds unless customers explicitly waive them. @gruber explains how you can help. https://daringfireball.net/2023/03/tweetbot_and_twitterrific_face_the_cliff
Tweetbot and Twitterrific Face the Cliff

There is something noble about two longtime rivals — competitors, yes, but with nothing but deep respect and camaraderie for each other — facing this terrible cliff together, with dignity and grace, considering their users first, as ever.

Daring Fireball

@overholt @gruber They should sue, seriously.

Though I suppose even if they won Twitter would just not pay them, like they do everyone else they owe money to