The difference between guest and business plans are as follows.
For business plan users,
1. There are no restrictions on project opening(creation).
: Free users can create up to three projects.
2. You can be registered as a same company(team) member and access premium features together.
: When you invite someone into a project, you can add registered users and it will be easier to manage their accounts(when they enter and leave).
3. You can upload a file up to 300MB at once.
: Free users are restricted to 10MB at once.
4. Unlimited file storage is provided, and you can search and access registered data for an unlimited time period.
: Free users are restricted to one month.
5. Through the administrator-page, you can easily manage the account and monitor the usage of your team members.
6. Through the private-URL, people can easily join and access to account.