Did anybody install the app?
I tried to install from PlayStore, but it didnt download.

This could be and ... sometimes the price on the exchange can go lower than ICO-price, there is no guarantee.

it will only get down due to whales manipulating the prices, people won't really sell below ICO price unless there is a whale buying low and creating panic from the newbies, now, if the project has a long roadmap, it may probably go below ICO price in time, but due to lack of interest until the project goes live.

Normally a listing on an exchange is a definite price boost. So if youre here for the fast money, sell it when it gets listed. In a longterm, as long as you dont have a scam coin, the price should be higher than the ICO one.

On the other hand they need to secure funds to run the project, but that could also scare away investors in the final stages. Off course if the project is solid and will be successful this will not matter

A good strategy, especially if you want to be a holder of the token, is to accumulate during the initial sell-off after listing on an exchange.

Yeah, I asked this before too but got no answer. The marketplace function is one feature I am interested in and really would like to know if there are differences to for example the facebook marketplace and how it will be made in Sphere.

Marketplace of what . What can we possibly sell in social media ?

You are usually connected with people in your area so it would be like craigslist. you could sell your old smart phone or what ever.

The whitepaper also doesn't say much about the marketspace, looks to me that it's gonna be pretty similar. I mean, what features can you add so it's completely different? Apart from the fact that the payment gonna be in SAT.