U4
hello again GmbH
- Reviews
- 9.8
- Size
- -
- Updated
- 2026-09-11
U4 is a digital loyalty and customer-club app for people who visit the U4 venue and want member benefits in one place. Users can collect points through activities such as visits, scorecard scans, friend invitations, and social participation, then follow bonuses and exchange progress for rewards. The app also brings together individual offers, events, current news, reservations, event photos, contact details, and FAQ help. Email and Facebook sign-in connect members with account-linked features, making it easier to keep up with club information and return to relevant benefits from an Android phone.