User login or anonymous?

My site will be for PHP tests and scenarios. If you wanted to take a test would you prefer to not create an account and just get "This is what you had right, this is what you had wrong".
Or would you prefer to have an account on the site with a gradebook so that you can check how you have improved etc.?
I think most people can not be bothered to create an account but I could offer more if they did.
I don't particularly want to do both as it's a lot of extra work.
opinions?

If you wanna get more hits I'd go with the anonymous but if you wanna be more helpful to the user who are willing to sign up(usually the ones who care more) then I'd go for the user login.

TBH I think both is needed. Half the people wont want to sign up, and the other half will.

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I agree with Jack.

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I plan to make an anonymous version first, to get it up quicker then offer accounts etc.

I think you should go for the anonymous version...for faster analysis and results

I think your idea is fine alex... beginning with anony. then going to available signup accnts. once you grow.