Founding Creator Council
For mahj teachers and group leaders
American Mahjong gives your students a daily hand and June’s lessons between your classes. It gives you a way to send a lesson, run a class and keep your group at the table. I’m choosing 5 to 10 teachers to help decide what it does next.
Caleb Zimmermann, who builds American Mahjong
What it does for you and your students
Real screens from the app, with sample names and numbers. All of it works today.

Live today
The Daily
One hand a day, the same deal for everyone, played as a real game with the Charleston and jokers. Your students play it and compare results. It is free and always will be.

Live today
June's lessons
Short voiced lessons from June, from the tiles to every hand on this year's card. Your students get a patient teacher between your classes. The beginner lessons are free.

Live today
Your group, every week
Who's in on Tuesday, whose house, who is bringing what, and who needs a sub. Friends who don't use the app can still get a seat.

Live today
Send a lesson
Pick any of June's lessons and send it to a student. She opens it on her phone with no account, and you see when she tells you she has finished.

Live today
Your page
americanmahjong.app/@yourname for your Instagram bio: your classes and open play, the lessons you recommend, a Join my group button and your own links.

Live today
Classes and open play
Run a class with a roster and a lesson for each session, and see the progress students choose to share. When the class ends, make it a group. Open play takes bookings, sends reminders and keeps a waitlist.
Built for Renee
I’m Caleb Zimmermann. I build software in the Twin Cities.
My mother-in-law, Renee, has taught 28 people to play mahj. She starts the game nights, sits with the new players, sends them videos and finds the fourth. I built this app for her.
Now I’d like to build it with people who teach this game every week. That’s what the council is for.
Caleb

Caleb’s video is on its way
A short video about Renee and why Caleb built this will be here soon.
The Founding Creator Council
A small group of 5 to 10 teachers and group leaders who use the app with their people and tell Caleb what to build next.
What you get
- Serious Player free, forever
- A Founding Creator badge on your profileComing
- Early access to new features, before anyone else
- Your name in the app's creditsComing
- A vote each month on what gets built next
- A direct line to Caleb
What Caleb asks
- Use the app with one real class or group
- React to a short weekly build note (a thumbs-up is enough)
- Join a 45-minute roundtable call with Caleb once a month
- Tell Caleb when something is wrong, confusing or missing
No payment, no contract and no exclusivity. If you post about the app, please mention you’re on the council.
Apply for a seat
It takes about two minutes. Caleb reads every application and will reach out personally within a few days.
Questions
- Does it cost me anything?
- No. Applying is free, and council members get Serious Player free, forever. Serious Player is the paid plan ($4.99 a month or $39.99 a year for everyone else) that lifts the free limits on practice games, reviews, the full card, group size and public events. For your students, the Daily and the beginner lessons are always free, and so are groups of up to 20.
- Do I have to post about it?
- No. If you choose to, please mention that you're on the council.
- I already use other tools for my classes. Is that a problem?
- No. Keep what works. Try the app with one class or group and tell Caleb what it is missing.
- When is the monthly call?
- Once a month, 45 minutes, on video. The time is picked to suit most of the group, and you can skip one.
- Is there a contract?
- No payment, no contract and no exclusivity. You can leave any time and keep Serious Player.
Something else? Email support@americanmahjong.app and it reaches Caleb.







