Clubnetz is a free, open-source web app. Members book a court in a few taps on their phone and pay their membership fee online. The board manages members, seasons, fees, court sales, events, news, the clubhouse and the books in one place.
Free for clubs and members. No advertising.
A look inside
Real screens of a club with more than 600 members. The names are invented, and so are the figures in the books and the clubhouse.
The booking grid shows all courts of a day with play modes, prime time, blocked courts and your own matches. Tap a free slot to book it, partners included.
New
Ask a few members, or one of your saved groups, to play at an exact time. Everyone answers with one tap, and when the last spot is filled, Clubnetz books the first free court of your choice.
The club enters its price list once per season. Members choose their plan, for themselves or the whole family, and pay online. The treasurer sees at a glance who has paid and who has not.
Players without a season membership sign up for free, tap a free slot, see the price and pay online. The court is booked for them right away, and the treasurer sees every sale in one list.
New
Income and expenses by category, tax sphere and cost center, next to the year before. Membership fees, court sales and Stripe payouts arrive as suggested entries, and imported bank statements are matched line by line.
New
The clubhouse host sees the open tabs, today's players and the regulars at a glance and books a round with a few taps. Guests pay at the end, in cash, by card or in the app.
Work efforts, parties, tournaments and meetings with registration, head count and the organizer's questions. News reach members by push notification or email.
The board sees how the courts are used, hour by hour and court by court. Members collect badges by playing and keep them in their trophy case.
Members keep their own details current. The board filters by season, age group and role, and copies email addresses for its mailings.
For members
No phone calls and no paper list at the clubhouse. Members see what is free and book it themselves.
Pick a court and a time and add your partners. The club's rules for opening hours, prime time and quotas are applied automatically.
Reserve the same slot every week or every few weeks. Change or cancel one date, or all following ones.
Ask a few members or a saved group to play. When the last spot is filled, the court is booked.
Choose a plan for yourself or the whole family and pay the fee online by card or SEPA direct debit.
See what's on your tab at the clubhouse and pay it in the app.
Parents book and manage on behalf of their children.
Work efforts, parties, tournaments and meetings, with registration and head counts. Share an event by link or WhatsApp.
Booking added or cancelled, a reminder before the match, new events and news. By push, by email, or not at all.
Who plays the most and with whom, leaderboards, and badges earned over the season.
Your season as a story: hours on court, favourite partners, badges and events, once the club releases it.
Plans a fair schedule for shared winter court subscriptions and exports it to Excel.
Member of two clubs? Join both with the same account and switch between them in the menu.
For the board
Less paperwork for the people who run the club in their spare time.
Member list, roles such as sports director, treasurer or trainer, and enrollment per season.
Your own price list per season: adult, youth by birth year, couple, family, student and more. Members pay online straight to the club's account and are enrolled automatically. The treasurer sees who has paid, records transfers and cash, and exports the list.
Courts, opening hours, prime time, play modes and who may book what.
Block courts for tournaments, maintenance, weather or weekly training. Affected players are informed.
Sell free court time to non-members at your own prices. They pay online or with a credit the club gives them.
Fiscal years, income and expenses by category and cost center, receipts from the phone, reports and the annual report. Fees, court sales and bank statements turn into entries almost by themselves.
Invoices to members, sponsors or other clubs as a PDF with a payment QR code, sent by email, with reminders.
Digital tabs for the clubhouse host: a round booked in seconds, paid in cash, by card or in the app.
Plan tournaments on a timeline over several days: drag bookings to another court or time and book many slots at once. Trainers and the board can book for any member without playing themselves.
Publish club news with attachments and send it by email to all members, the youth or selected roles. Every email text can be adapted.
Court utilization and activity over the season.
Connect your club website, a spreadsheet or your own scripts with an API key.
API documentation →Getting started
Tell us the name of your club and how many courts you have.
You get your own club area with your courts, seasons and rules.
Members register with their email address and start booking.
Open source
The complete source code of Clubnetz is public under the AGPL-3.0 license. You can read it, improve it and run it on your own server.
One Docker image runs the whole app. It needs a PostgreSQL database and an SMTP server for emails.
Clubnetz
git clone https://github.com/sleepwalkerffs/Clubnetz.git
cd Clubnetz
docker build -t clubnetz .For tinkerers
Somebody in your club knows a little programming? With an API key, your own scripts and tools can read and change what the app shows: bookings, members, events, news and court blockings.
# How many members do we have?
curl -H "Authorization: Bearer cnz_..." \
https://my.clubnetz.app/api/Clubs/12/Members/summary
# Which courts can be booked?
curl -H "Authorization: Bearer cnz_..." \
https://my.clubnetz.app/api/Clubs/12/CourtsQuestions
Yes. Clubnetz is free for clubs and for members, and it contains no advertising. The source code is public under the AGPL-3.0 license.
It was built for a tennis club and tennis is what it is tested with every day. It works for any club that has courts to book and members to manage.
No. Clubnetz runs in the browser on any phone, tablet or computer. Members who want to can add it to their home screen, where it behaves like an app and can send push notifications.
Yes. The repository contains a Dockerfile that builds one image for the whole app. You need a PostgreSQL database and an SMTP server for emails.
The hosted Clubnetz runs on servers in the EU. Other members only see your name and profile picture. Members can export their personal data, leave a club and delete their account themselves.
Yes, if the club wants to. The club enters its price list as membership plans, members choose a plan for themselves or their family and pay by card or SEPA direct debit. The money goes straight to the club's own Stripe account, and a paid fee enrolls the members in the season. Bank transfers and cash are recorded by the treasurer.
Yes, if the club wants to. The club sets prices per court, weekday and time. Players who are not enrolled in the season tap a free slot and pay online, or use a credit the club gave them. Members of the season keep booking for free.
Yes. The treasurer keeps the books in Clubnetz: fiscal years, income and expenses by category and tax sphere, receipts, reports and the annual report. Membership fees, court sales and Stripe payouts are suggested as entries, bank statements are imported and matched, and invoices go out as a PDF with a payment QR code. The auditors get a role of their own to check the year.
Yes. The clubhouse host keeps the tabs of members and guests in the app instead of on a paper list and records how each tab was paid. Members can pay their tab online with SumUp. The money goes to the host, Clubnetz only keeps the list.
Yes. Club admins create API keys in the app and use them to read and change the data of their club from their own scripts and tools, for example to show free courts on the club website or to export the member list. API documentation
Write to us and we set up Clubnetz for your club, free of charge.
hello@clubnetz.app