Last updated: January 26, 2026
Welcome to 66 Challenge. By using our app, you agree to these terms.
By downloading, installing, or using 66 Challenge, you agree to be bound by these Terms of Service. If you do not agree, do not use the app.
66 Challenge is a habit tracking app that helps users build lasting habits over 66 days. Features include daily habit tracking, progress photos, social features (friends, activity feed), and premium subscriptions.
You must provide accurate information when creating an account. You are responsible for maintaining the security of your account and password. You must be at least 13 years old to use this app.