It is available on desktop, Android and iOs application. You can create projects with 2 tabs: discussion as dialogues and group chats, and files. If last ones loaded as audio foles, users can choose parts of files and comment, analyze or change specific parameters of them.
Files up to 190 Gb could be loaded into Pibox. Personal limit for premium account reaches 10 Tb. System is launched in Microsoft Azure cluod. First 16 days are free, then cost reaches $10 to $50/month.