YOUR ARENA COMPANION

Don’t just watch sumo.See it.

Understand what everyone around you is reacting to—while it is happening.

See the first 7 freeHow it works ↓
No accountNo Japanese requiredMade for the arena
SUMO DAYTRIP PASS
WHAT ARE YOU SEEING?
🧂Throwing salt⏳Won’t start旗Banners🚩Judges
👀 Watch Like a LocalSee the details →
⚡ Something weird?Jackpot moments →

“Why are they throwing salt?”

“Why won’t they start fighting?”

“Why did everyone just explode?”

The entrance of Ryogoku Kokugikan before a sumo tournament
Ryogoku, Tokyo · photographed on a real SUMO DAY
MADE FOR THE DAY YOU’RE ACTUALLY THERE

Built from the seat,
not from a desk.

You already made the trip to sumo. SUMO DAY helps that rare day feel less confusing—and much more alive.

Try it before your trip →
BUILT FOR THE SEAT YOU’RE ALREADY IN

Open. Tap. See.

Not another guidebook to finish before your trip. SUMO DAY works at the exact moment curiosity hits.

01

Open your phone

No login. No feed. No setup at the arena.

02

Tap what you see

Salt. Banners. A ceremony. Something strange.

03

Look back up

Understand it in under a minute. Watch the next ten.

60 ARENA-READY CARDS

First understand it.
Then start seeing it.

30 CARDS

Understand It

Rituals, rules, ranks and techniques—without turning your day into homework.

Know what is happening.
20 CARDS

Watch Like a Local

The fists, footwork, voices, colors, and tiny signals Japanese fans notice.

See what Japan sees.
10 CARDS

Jackpot Moments

Judges in the ring? A full rematch? A bow on the floor? Know when you got lucky.

Catch the rare moment.
SEE WHAT JAPAN SEES.

The day starts before the first bout.

Color, routine, sound, timing. SUMO DAY turns details around the arena into things you know to look for.

Open Local Mode
Colorful sumo nobori banners surrounding the fire-watch tower at Ryogoku
Look up. The arena is already telling you a story.
TRY IT IN THE ARENA

Seven cards.
No credit card.

The seventh card reveals why the broom outside the ring is part of the evidence. If that changes how you look at the dohyo, the other 53 are for you.

Start the free 7
  1. 01Why are they throwing salt?
  2. 02Why won’t they fight?
  3. 03How to watch a five-second bout
  4. 04What are the banners?
  5. 05What makes a Yokozuna different?
  6. 06What is the ring-entering ceremony?
  7. 07The broom is part of the evidenceLOCAL LENS
A DELIBERATELY SMALL PRODUCT

Made to disappear.

40 secOpen SUMO DAY→10 minWatch the dohyo

No live scores. No notifications. No endless scrolling. No individual advice. No ticket arrangement.

SUMO DAY · TRIP PASS
$49per trip

One purchase for your travel party.

Up to 4 people · One-time purchase · No subscription · No account to maintain

  • 60 arena-ready cards
  • Watch Like a Local
  • 10 Jackpot Moments
  • Sumo Spotting + Scorecard
  • Mobile-first, login-free access
Secure checkout by Lemon Squeezy once connected.
YOU HAVE THE TICKET.

Now see what everyone else is missing.

SUMO DAY doesn’t sell tickets, arrange tours, provide live tournament information, or predict results. It does one thing: help you see sumo.

Ryogoku at the end of a tournament day.
$49One trip · up to 4