Circle from privapp

Circle by privapp is a secure messaging and collaboration platform that allows you to discuss, share and edit files without risking your sensitive data by storing it in the cloud. Built with a security-first design philosophy, only you and your private group can access your discussion topics using your computer, iPhone and other devices.

Circle by privapp enables you to create units of collaboration called “circles” and within a circle you can create multiple areas of interest called topics. Each topic contains a main discussion thread and file attachments can be added to each topic. The Circle owner can add members via secure 2 factor authentication and instantly remove them with a single click.