Who it is for
Frequent international travellers who need mobile data, and sometimes a genuine local number, on arrival.
Travel eSIM plan matching across 148 countries
Overview
Simbye matches a trip to a travel eSIM. The inputs are destination, trip length, and requirements such as data volume, calling, or a real phone number, and the app draws on a catalogue of more than 600 plans across 148 countries. Prices show live in dollars, euros, and pounds, alongside the carrier network, 5G availability, and fair-use conditions.
Some plans carry local numbers: AT&T in the United States, KDDI in Japan, DTAC in Thailand, and an Orange Holiday number for Europe, usable for SMS verification, WhatsApp, and voice calls. The US unlimited plan extends roaming into Mexico and Canada. A build-it-yourself option combines up to ten countries with a chosen data amount and duration. Plans start at $2.99, purchase happens on simbye.com, and no account is needed to use the app.
Frequent international travellers who need mobile data, and sometimes a genuine local number, on arrival.
A handful of markets come with real local phone numbers rather than data-only service, and a custom plan can span up to ten countries.
Availability
Simbye is listed in the ChatGPT apps directory only. Maria Vergadoro has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
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This is an independent catalogue entry compiled by Node8 from Simbye's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Maria Vergadoro, and inclusion here is not an endorsement.
Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot.