It's very easy to use for anyone who has basic knowledge about Microsoft Office Excel or Google Docs as it allows you to create templates which can be used by multiple users in your organization without having any issues like duplicating data etc..
The interface looks outdated but nothing much I would say since this isn't something new - just older versions are still available so no complaints there either! If someone wants an automated way out then go ahead otherwise if they need only simple spreadsheet creation than stick around unless some other better option comes up from time-to-time because its pretty good too!!