Up to 10 people can use it for an unlimited period of time.
As much functionality is available as the starter.
You can use the environment you have built for free at the time of this contract.
Number of accounts
10
Number of groups
unlimited
server capacity
1GB
1 file upload limit
~30MB In the case of Free Plan/Starter Plan, it has been modified so that only one content can be uploaded for a large amount of material (30 MB to 500 MB file).
EN 
JA