You may know The Pattern as that astrology app that flabbergasted Channing Tatum over its accuracy, or perhaps you use it for zodiac-based daily updates on your personality and feelings like I do. But ...

Your friend’s phone chimes in the middle of your coffee date. You ask if she needs to take the call, and she brushes it off. “It’s just Co-Star,” she says, of the astrology app that sends a daily push ...