Why ‘Sign Up’ and ‘Sign In’ Button Labels Confuse Users

If you want to give your users a fast and mistake-free login experience, avoid using ‘sign up’ and ‘sign in’ together on your buttons. Instead, make the button labels distinct from each other by using different verbs. There are alternative ways to say ‘sign up’ and ‘sign in’ that mean the same thing. A better way to say ‘sign in’ is ‘log in’. If you want to use ‘sign up’ as a button label, use ‘log in’ with it. The verbs are different and won’t cause as much confusion. However, if you want to make your button labels more distinct than that, use a more descriptive phrase for ‘sign up’.