Launching July 2026 on iOS & Android

The mahjong app your group has been waiting for.

Finding a game used to mean digging through group chats, Facebook events, and last-minute texts. Hoptoi brings discovery, RSVPs, scores, and your whole community together in one place.

Coming July 2026 to the App Store Coming July 2026 to Google Play

Stop searching for games in group chats and spreadsheets.
Start playing more mahjong.

When you create a game, simply tag which style you're playing. Everyone knows what to expect before they sit down.

  • American NMJL Uses Jokers

    The most popular American style. Played with Jokers as wild tiles and a new winning hand card published each April.

  • Riichi No Jokers

    The Japanese style, built on strategy and the Riichi declaration. Precise, tactical tile play.

  • Hong Kong No Jokers

    The fast-paced Cantonese style most associated with traditional mahjong. Deep scoring and the roots of the global game.

  • Chinese Classical No Jokers

    The original form of the game. Deliberate and deeply traditional. The source from which all modern styles grew.

Features

Everything Mahjong, One App

Event Discovery

Find open games by location, date, skill level, and style.

Leagues & Tournaments

Track league standings and compete within your skill division.

Live Table Availability

See which tables have open seats in real time.

Player Profiles & Stats

Build your profile and track your full game history.

Score Log & Leaderboards

Log scores after every round and watch standings update live.

Smart Notifications

Get notified when seats open or your game is starting.

Player Reviews

What the community is saying

★★★★★
I used to spend more time texting my group about logistics than actually playing. Now I open Hoptoi, see what's open, and show up. I found a whole new game near me I didn't even know existed.
Lindsey G. Orlando, FL · App Store
For Hosts & Organizers

Built for the people who make it happen.

From casual open play to full tournament seasons, Hoptoi gives organizers everything they need to run events — whether you're a neighborhood club, a community center, or a competitive league director.

  • Create events and manage RSVPs in one tap
  • Track attendance and assign tables in real time
  • Input scores and manage full league seasons
  • Host dashboard with event history and player data
  • Automated reminders sent to all attendees
Our Story

Built by a player, for the community.

Lauren Casey didn't set out to build an app. She set out to play more mahjong.

After discovering the game, she found herself drawn in, not just as a player but as an organizer. What started as a weekly game with friends grew into open play nights, leagues, and tournaments, with dozens of players showing up week after week.

But growth brought a new problem. Coordinating that many players across group chats, spreadsheets, and sign-up sheets became a part-time job. Seats went unfilled because no one knew a table was open. Scores got lost between rounds. New players didn't know where to start.

Hoptoi is Lauren's answer to that problem: the tool she wished she'd had from day one. Built by someone who has run the games, filled the tables, and tracked the scores herself, it's designed to hand that time back, so hosts and players can spend it at the table instead.

"Whether you're hosting a packed open play night or just looking for your next game, Hoptoi keeps the tiles moving."
Lauren, Founder of Hoptoi Coming July 2026
The Name

Where Hoptoi comes from.

Mahjong was born in China in the 1800s, traveled the world through trade, diplomacy, and military postings, and took root in communities across the globe. The word hoptoi itself traces to Cantonese roots, where hop relates to something enclosed or held together and toi means table. It is one of those words that made the full journey.

In the 1930s and '40s, Air Force spouses at Wright-Patterson Air Force Base in Dayton, Ohio traveled the world with their families, fell in love with mahjong along the way, and brought it home. They codified their own ruleset: the Wright-Patterson rules. Alongside the National Mah Jongg League, founded by a group of women in New York City in 1937, the Wright-Patterson rules became one of the two great pillars of American mahjong as we know it today.

During the deal, if you run out of tiles from the first wall, you hop to the second wall. Whichever player receives two tiles from the first wall and two tiles from the second wall has good luck. That player calls it out: "Hoptoi!" or "I believe!" Once called, no one else at the table may touch those tiles. You don't mess with the magic.

"Keep the luck at the table."
Contact

Get in Touch

Have a question, feature idea, or want to partner with us? We'd love to hear from you.

Response Time Within 1 business day

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Hoptoi launches
July 2026.

Free to download and join games. No subscription required.

Coming Soon to theApp Store Coming Soon toGoogle Play