I dont understand what does Yappadappadoo mean by Install-free and ready to use. I mean, how can we use the app if we dont install it on our device?
I also dont understand the idea but Im thinking of the offline use. Like you open a certain browser and there you will find applications but they also said in their whitepaper that their applications can work offline. I really dont understand and dont know which application for instance can be used offline. Probably game applications and other applications that do need interactions like communication applications.
I think you really need to read the Whitepaper or you may also want to research about on How Progressive Web Application (PWA) works. There are different applications which can be used even if it offline. Many of the native or in-house applications of every company need this technology.
Ya. I got it. Like calculator, calender, notepads, what else? Candycrash, guitar tuner, photo editors but not social network applications and messengers. If it can work offline then internet will not be earning anymore. I hope you dont get offended with my comments. Just stating the fact.

. Anyway Ive read their whitepaper too and they said that PWA is also working in some of other apps stores applications so it means they are not the only one.