Postmarks is a cozy walking adventure that turns everyday steps into progress across real routes in Japan and East Asia, with cities to reach, stamps and souvenirs to collect, and a travel history that grows with every walk.
Press kit
Postmarks turns everyday steps into places worth reaching.
A cozy walking adventure for iPhone and Android, built around real routes, collectible destination stamps, Trail Find souvenirs, and a travel history that grows with every walk.
Press contact Yutaro Sakairi · yutaro.sakairi@gmail.com
Released April 2026
The essentials
Fact sheet
Everything needed to identify, describe, price, and link to Postmarks.
- App
- Postmarks: Steps & Stamps
- What it is
- A cozy walking adventure that turns daily steps into progress along real routes across Japan and East Asia.
- Price
- Free to download, with Heart of Honshu included. Postmarks: Japan is a $9.99 one-time purchase. Postmarks: Japan + East Asia is a $14.99 one-time purchase. Local store prices may vary.
- Platforms
- iPhone and iPad running iOS 16 or later; Android devices running Android 8 or later.
- Release date
- April 2026
- Developer
- Yutaro Sakairi, based in Mendoza, Argentina
- Category
- Health & Fitness
In three lengths
About Postmarks
Ready to quote, paraphrase, or use as background.
Postmarks turns everyday walking into a slow journey through real places. Steps from Apple HealthKit or Health Connect move the walker between cities across Japan and East Asia; each arrival unlocks a collectible destination stamp and local context, while Trail Finds fill a growing Backpack of souvenirs. Heart of Honshu is included free, with larger regional editions available as one-time purchases rather than subscriptions.
Most step trackers turn movement into a number and leave it there. Postmarks gives the same steps a destination: a city ahead, a route taking shape, and something meaningful to keep when the distance closes.
Walks in the real world move the traveler along routes based on real places. Arrivals earn illustrated stamps for a personal Passport, daily Trail Finds uncover souvenirs for the Backpack, and achievements mark milestones and unusual discoveries. City Guides add context to each stop, while Day and After Dark modes give familiar routes a second atmosphere without erasing progress.
The result is a calm record of consistency rather than a conventional fitness dashboard. Postmarks preserves the journey through its Passport, Journal, route history, stamps, souvenirs, and badges—turning ordinary movement into a travel story built one step at a time.
Key features
What makes it different
Each statement is written to stand on its own.
- Postmarks turns steps from Apple HealthKit or Health Connect into visible progress between real cities.
- Reaching a destination earns an illustrated vintage stamp and opens local stories about the place behind the artwork.
- Daily Trail Finds add food, charms, travel gear, curiosities, and regional objects to a personal souvenir Backpack.
- Day and After Dark give eligible routes distinct maps, stamps, and discoveries while sharing the same journey position.
- The Passport and Journal preserve routes, arrivals, earned collectibles, and walking history as a record of the journey.
- Private invitations and Traveler Cards let friends share coarse virtual-route progress without exposing live location or raw health data.
Interface imagery
See the journey
Lightweight previews link to full-resolution PNGs with transparent device presentation. Select any image to download it.
Brand assets
Icons and logos
Use these files when identifying Postmarks in editorial coverage.
App icon
PNG with square artwork.
Navy wordmark
For light and neutral backgrounds.
White wordmark
For dark backgrounds.
Editorial use is welcome when covering or reviewing Postmarks. Please do not alter the logo, recolor it, or place text over the app icon.
About the developer
Yutaro Sakairi
Yutaro Sakairi is the founder, product designer, and developer behind Postmarks. Based in Mendoza, Argentina, he builds and operates mobile products end to end across product strategy, UX, Flutter, backend systems, monetization, and release.
Postmarks is his clearest expression of that approach: a consumer product he designed, built, released, and continues to operate across iOS and Android.
Questions, interviews, review access
Contact Yutaro directly.
For press questions, additional images, or anything needed for a story:
yutaro.sakairi@gmail.com