A whole club, run out of group chats and paper.
Like most amateur clubs, everything lived in scattered WhatsApp groups, spreadsheets and a literal logbook for the hall key. Who's coming to training? Who has the key right now? Who do I ask about membership? Nobody could answer without scrolling three chats.
- Training attendance guessed from chat replies that scrolled away
- The hall key tracked on paper — and regularly "lost"
- Announcements, board requests and chatter all in one noisy feed
- New members onboarded by hand, passwords forgotten constantly
- One-tap attendance with a live list of who's actually coming
- A digital key pass — full handover history, transfers in 2 taps
- Separate lanes: 1:1 chats, board inbox, club broadcasts — with unread badges
- Passwordless login via Face/Touch ID; magic-link invites for new members
One tap, and the team knows you're in.
The single most-used action in the app. No reply-all, no "who else is coming?" — tap once and the live attendance list updates for everyone. Go ahead, toggle yourself on.
The features that carry the app.
Not a feature dump — these are the pillars members actually open the app for, every week.
Trainings & attendance
Week and list views, one-tap "I'm on / Leave", and a live roster of who's coming. Hall, time and a jump straight to the key log.
Messaging that's sorted
1:1 peer chats, a board inbox for requests, and club broadcasts — kept in separate lanes with unread badges and live auto-scroll.
Hall-key protocol novel
A digital key pass per hall. Full handover timeline, two-tap transfers, and bidirectional requests you accept right in the feed.
Passkey login WebAuthn
Passwordless, biometric sign-in with Face/Touch ID. Magic-link invites for new members, multiple devices per account.
Club org, built in
Member management, halls and venues, board roles, an equipment inventory with a request workflow — and multi-club support.
Personal & polished
German/English live toggle, three color schemes, drag-to-close bottom sheets and a floating tab bar. Dark-mode by design.
The hall-key, finally accountable.
The feature nobody expects from a club app — and the one everyone ends up loving. Every hall has a digital key pass with a complete, timestamped handover history. No more "who had it last?"
Around the app.
Drop in your own screenshots — trainings, chat, key timeline, settings.
Tech stack.
Got an idea that should be an app?
From a club tool to an internal platform — I design and build installable, production-grade apps end to end. Tell me what you have in mind; I'll reply within 2 hours.
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