How does the mobile SignUp work?

We make it easy for anyone to sign up on the go! When a Participant accesses a SignUp invitation link from a text, email or social media post on their smartphone, automatically displays SignUp screens designed to fit their phone's browser and small screen size. No separate apps or special downloads are needed.

If you're a power user with multiple activities, please check out our pro-app, "SignUp by" for iPhone and Android. SignUp brings more ad-free instant access to all your activities in one place. Learn more here

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