eSIM Scout Japan

What We Do

We aggregate eSIM plan data from major providers including Airalo, Ubigi, Saily, Holafly, and many more. Our comparison tool lets you filter by data amount, duration, price, network type (4G/5G), and features like hotspot and voice calls.

Our Testing

We don't just aggregate data — we test it. Our speed tests cover 6 eSIM providers across Tokyo, Osaka, Shinkansen, Hakone, and Hokkaido. We publish real numbers: download/upload speeds, latency, and signal drop frequency at each location. Our reviews include multi-day usage scenarios with actual data consumption tracking.

For Travelers

Whether you need a quick 3-day plan for a Tokyo weekend or unlimited data for a month-long digital nomad stay, we help you find the right plan at the best price. Our guides cover everything from eSIM setup to Japan network coverage.

For Developers & AI Agents

We provide a free REST API at /api/v1/ for programmatic access to plan data. AI agents can query our API to help users find eSIM plans. See our OpenAPI spec for details.

Affiliate Disclosure

This site contains affiliate links. When you purchase an eSIM plan through our links, we may earn a commission at no extra cost to you. This helps us keep the service free and up to date. Our comparisons and recommendations are based on objective criteria (price, data, coverage) and are not influenced by affiliate relationships.

Operator

Languages

eSIM Scout Japan is available in English, Simplified Chinese (简体中文), Traditional Chinese (繁體中文), and Korean (한국어). Select your language from the globe icon in the header.