I was looking for a doodle alternative, because the latest "improvement" made it far worse. The kukkee demo seems to require registration though? one of the best things about doodle for me was that I can just use it instantly without registration.
Having the option to use an account is fine, but forcing it is a mistake in my opinion.
Of course it’s your product and you can choose whatever makes sense to you.
p.s. creating an account wasn’t painless actually with strange password strength requirements (between 8-15 chars, special symbols etc), but that’s not the main point.