A:AnswerIf you don't use a phone or tablet, the only thing you'll see on the Up is the approximate amount of steps you take or the hours of sleep. But if you attain the goal of 10,000 steps or 8 hours of sleep, it goes round and round.
A:AnswerI have yet to find a web-based app so far which seems silly in 2015. As for data retention I have gone two days on my and it syced perfectly. According to the FAQ on jawbone's site it is supposed to contain 2 weeks worth of data.