“MrBeast ends Finger on the App competition by telling players to stop after 70 hours. “The rules were simple: be the last person to take your finger off a phone screen, and win $25,000.” (I’m underpaid.)

+ “Using a deep learning algorithm to crunch through grading data from merchants, Tuna Scope has now evolved into a smartphone app. Clients can download and use it anywhere, creating ‘a unified grading standard’ for an industry that relies on local know-how.” Sushi meets AI: Japanese inventor’s app scopes out choice tuna cuts. (Interesting, even if the product is still a little raw.)

+ 24 Things You Might Not Have Known About Hamilton.