Muse, meanwhile, hit the iPad just a month after launching on iPhone. (To be fair, it may not be as difficult to bring something like Muse to iPad, given its text-heavy interface, where image and video resolution and formatting matter less.) Since launching on iOS and Android on September 8, Muse has topped 6.6 million installs, according to estimates from market intelligence firm Sensor Tower. The app, which is now one of dozens of consumer-facing AI agen