What is Kyoto Mobile?

Kyoto Mobile is an e-commerce platform for Japan travel eSIM data plans. Travelers compare available plans, pay securely online, and receive their eSIM instantly - connected on arrival, with no physical SIM card or airport counter required.

How does the platform keep the plan catalog manageable?

Every plan is stored as structured content - data volume, validity, price - so updates happen in one place and publish instantly, without code changes or developer involvement.

Why does performance matter so much for an eSIM store?

Customers often buy right before flying to Japan - on airport Wi-Fi or a weak roaming signal. Fast rendering keeps comparison and checkout usable in exactly those conditions, which directly protects conversion.

Can a similar platform be built for a different product or destination?

Yes. The same foundation - structured catalog, multilingual content, SEO-ready rendering, and secure checkout - adapts to other destinations or almost any digital or physical product line.

Kyoto Mobile - Japan Travel eSIM Store

Role: Design, build, deploy
Timeline: 2 weeks
Type: Storefront

Outcomes

From kickoff to launch: 14 daysFrom kickoff to launch
Languages at launch: 21Languages at launch
SEO score: 100/100SEO score

Live site ↗

Stack

Next.js
Tailwind CSS
TypeScript
Nest.js
Sanity
Prisma ORM
Stripe
Redis
Vercel

/01Challenge

Kyoto Mobile sells eSIM data plans for one destination: Japan. That focus raises the bar rather than lowering it. Travelers usually buy days or hours before departure - on a phone, over airport Wi-Fi - and they need to pick the right combination of data volume, validity, and price in seconds, then have a working connection the moment they land.

The platform had to feel instant even on weak connections, make comparison effortless for people who may never have installed an eSIM before, keep the plan catalog manageable without developer involvement, and serve an international audience in multiple languages - all while competing in search for high-intent queries like "Japan eSIM".

/02Approach

I approached Kyoto Mobile as a performance-first storefront built on structured content. Every plan is structured data - data volume, validity, price - so the catalog stays effortless to manage and ready to grow.

Plan-first comparison - travelers see Japan data plans side by side and choose by volume, validity, and price, without wading through a generic product list.
Instant delivery - secure online checkout with the eSIM issued immediately after purchase, ready to install before the flight and active on landing.
Multilingual by design - interface and content are localized, with language-aware routing and metadata for international SEO.
Optimized rendering - pages are rendered for speed and crawlability, keeping performance strong on both desktop and mobile.
Built for growth - dynamic product management means new plans, and even new destinations, can be added without touching the architecture.

/03Result

The result is a professional digital commerce platform that makes getting online in Japan genuinely simple: compare plans, pay securely, install the eSIM before you fly, and land connected - from any device, in your own language.

For the business, the same foundation solves the operational side. Every plan is managed as structured content rather than hand-edited pages, new offers and languages ship without rework, and the SEO-ready architecture is built to compete for high-intent Japan travel connectivity searches. The platform is ready to grow - in catalog, in languages, and in traffic.