App is slow and buggy. UPDATED 20/02. So the app is no better, in fact I'd say it's worse, if that's possible. I tried to knock it down 1 star but was unable to. So I'm running it (well, when it works) on Samsung Galaxy S21 Ultra with the latest software. Launching the app gives you a 33.3% of it working. I've only 500 words to tell you how awful this app is, which is far to few words. I'd like to say it's better on ios but it isn't. "Smarter by Design" clearly is not the case. A generous 1/5