In developmentComing soon: AR stamps. In active development!
DetailsNo setup fee · No app for participants
Low cost. AI does the work.
Every stamp, on display.
Stamp Rally Maker is a digital stamp rally builder that starts free, with paid plans from ¥980/month (about $7 USD). Pick an area and approve — AI plans the route and draws the stamps. Participants just open a URL on their phone, and the stamps they collect go on a keepsake board they can revisit anytime.
No credit card required · Your first rally is free
A participant's Stamp Board. Every stamp shown here was generated by AI
Three ideas behind everything
We built this so a stamp rally can be cheap to run, easy to make, and worth keeping.
Low cost
Start at ¥0. Paid plans from ¥980/month
No setup fee, cancel anytime. One rally with up to 100 participants stays free forever, and paid plans can be subscribed to only for the months you need. Build it yourself instead of hiring an agency and keep costs low.
Easy with AI — leave it to us
Pick an area, approve, done
AI selects the spots, plans the route, writes the descriptions, and draws the stamp artwork (paid plans). Prefer hands-on? Just click the map to place spots yourself.
Collected stamps go on display
Memories participants get to keep
Participants arrange the stamps they've collected on a personal board and save it as an image. A keepsake they come back to — and a natural reason to visit again or share.
How is it different from paper or an agency?
Cost, preparation, and the participant experience, compared with the usual ways of running a rally.
The paper and agency columns describe typical practice and are for reference only.
Leave it to AI: done in 3 steps
Spot selection, descriptions, and stamp artwork — you just choose the area and approve.
- 1
Pick an area
Search a place name or tap the map. Set the radius (200 m–5 km), the number of spots (3–10), and an optional theme. Choose GPS or QR check-in.
- 2
Approve the plan
AI proposes spots, a route, and descriptions. Untick anything you don't want and drag to reorder.
- 3
Publish
Rally name, description, and stamp artwork are generated for you. With GPS check-in you can publish with nothing to print; with QR, print materials are generated automatically.
AI auto-create is available from Standard (¥980/month). Building by hand — click the map to place spots — works on the free plan too.
AI draws your stamps
Type a few keywords and AI generates stamps, cover art, and header logos in six styles. You can always upload your own artwork instead.
Samples generated from the motif "cherry blossom"
AI image generation is a paid-plan feature (Standard: 30/month, Pro: 100/month). Every sample below was actually generated by AI.
Collected stamps become keepsakes
Every participant gets a Stamp Board on their My Page: a personal cork board where the stamps they've collected go on display.
Arrange freely
Tap to add, drag to move. Resize and rotate with a fingertip.
6 backgrounds, dates, and text
Cork, craft paper, and more — add a date or a short note.
Many rallies, one board
Sign up and stamps from every rally you've joined can live on the same board.
Save and share
Export the board as an image to share on social media or in messages.
For organizers, that means participants have more reason to collect — and something worth talking about. A natural prompt to come back, or to tell a friend.
Everything a stamp rally needs, built in
AI auto-create
Pick an area and approve — spot selection, descriptions, and stamp artwork done in one go (paid plans).
AI image generation
Type a few keywords and AI generates stamps, cover art, and logos (paid plans).
Stamp Board
Participants arrange their collected stamps on a keepsake board and save it as an image — something they'll come back to.
QR codes
Participants scan the QR at each spot to collect its stamp. Print materials are auto-generated.
GPS check-in
Stamps are collected on the spot when participants get close enough. Nothing to print.
Puzzle keywords
Solve a riddle, enter the secret word. Perfect for puzzle-hunt style events.
Pickup effects
A hanko-style stamping animation the moment a stamp is collected, with optional sound or video (video on Pro).
Custom design
Set theme colors, backgrounds, fonts, and QR design per rally.
Analytics
Track participants, completion rate, and per-spot pickups in real time. CSV export included.
Made for events like these
Simple pricing
No setup fee. Start free and upgrade as you grow. Cancel anytime. AI features start with Standard. Billed in Japanese yen (¥) — approximate USD shown.
Free
Try it out
¥0
$0 — free forever
- 1 rally
- 100 participants per rally
- All methods: QR / GPS / puzzle
- Stamp Board & pickup effects
- AI features start with paid plans
Standard
For small events
¥980/mo
≈ $7 USD, billed in JPY
- 5 rallies
- 500 participants per rally
- AI auto-create: 3 rallies/month
- AI image generation: 30/month
- Stats CSV export
Pro
For serious operations
¥2,980/mo
≈ $20 USD, billed in JPY
- 30 rallies
- 2,000 participants per rally
- AI auto-create: 10 rallies/month
- AI image generation: 100/month
- Video pickup effects (1GB storage)
- Stats CSV export
Enterprise
For large events & municipalities
Contact us
- Unlimited rallies
- 10,000+ participants per rally
- Custom AI quota
- White label · invoicing · priority support
Frequently asked questions
Do participants need to install an app?
No. Participants just open a URL (or scan a QR code) on their phone and start playing right away. No account registration needed either.
How far does the free plan go?
One rally with up to 100 participants, with all collection methods (QR, GPS, and puzzle) and the Stamp Board. AI features (auto-create and image generation), video effects, and CSV export are paid-plan features.
What is AI auto-create?
Pick an area on the map and approve it — AI selects the spots, plans the route, writes the descriptions, and generates the stamp artwork for you (Standard: 3 rallies/month, Pro: 10). You can also generate images alone from a few keywords (Standard: 30/month, Pro: 100). Both are paid-plan features.
What is the Stamp Board?
A feature on the participant's My Page for arranging collected stamps however they like. Choose a background, add a date or text, and save it as an image. With an account, stamps from different rallies can be gathered on the same board.
How is this different from a paper rally or hiring an agency?
It's low cost — no setup fee and paid plans from ¥980/month — and with AI auto-create, spots and artwork come together in one go. Participants don't install anything; they just open a URL. Collected stamps go on a personal board, so unlike a paper card there's something to look back on. And you can see participants and completion rates in real time.
How do payments and cancellation work?
Monthly billing by credit card (via Stripe). Cancel anytime and you'll return to the free plan. Enterprise supports invoice billing.
Create your first stamp rally today
The free plan costs nothing. Build by hand in about 5 minutes, or let AI do it: pick an area and approve.
Start for freeNo credit card required · Your first rally is free