It's a jet, it's a plane, it's a super app.
CamScanner—Smartphones double as scanners courtesy of CamScanner, which also allows users to organize and share scans. A premium account goes for $4.99/month or $49.99/year.
Trello—Manage projects and get instant updates all in one place with Trello. With extra controls, business class is $5/month and $45/year per user.