No, the app is free, only paying for premium if you need it. The standard app is not cross-platform and is more difficult to use. I'm an iOS owner myself and know what I'm talking about )
No. Those who use it say it's not. And the standard iOS application does not allow to work cross-platform or just via a link without registration. Try it )
I agree. Currently the web version is used only for displaying and performing tasks. You cannot create task lists on the web. But there are many plans, I will make the application better.