About this site

What this site is. A single-country comparison of every travel eSIM sold for South Korea, alongside the three things most comparison sites leave out: LG U+, KT and SKT's own tourist eSIMs. I include the carriers because they sell genuinely uncapped data for about $20 and come with a Korean 010 number, and no travel eSIM does either. Leaving them out would make the tables tidier and the advice wrong.

Why Korea needs its own site. Three reasons that a global "best eSIM" list cannot handle. The 010-number wall is coming down in 2026: Naver added passport verification in June, Baemin dropped its Korean-number requirement in the summer, CatchTable works on email, and Kakao T takes a +1 number, so the old rule that you must have a Korean line is now mostly a Coupang problem. The carriers sell direct to tourists, which changes what "local SIM" means here. And of the brands I can link, only Airalo names its Korean network. In Korea that matters less than anywhere else I cover, since all three networks are near-universal, but it still matters on the KTX, where the government's own 2025 measurements found 5G at 393 Mbps against 974 nationwide and 19 of 32 weak zones on rail lines. The carrier page is where those threads meet.

What it earns. A commission from Airalo, Saily, GigSky, Yesim and Drimsim when you buy through a link here, at rates from 12% to 20% that the methodology page prints brand by brand. Nothing from Ubigi, Holafly or Nomad, and nothing from SKT, krsim, KT or LG U+. Ubigi appears in every price table because it is cheaper than everything I sell at 10GB. The carriers win the unlimited page outright. Both facts cost me money to publish, which is the best evidence I can offer that the rest of the site is straight.

What it does not do. No sponsored placements, no guest posts, no paid rank in any table. No speed test I did not run: coverage notes here are published maps and traveler reports, labelled as such. No "unlimited" without its daily cap beside it, and where a brand publishes no cap, the page says "not published" rather than guessing. No links to other eSIM sites, and no invented author photo.

How it stays current. Prices are re-pulled monthly, and every page carries the date it was checked, currently September 7, 2026. Rules that moved this year, the one-line-per-passport limit in December 2025, face authentication phased in from July 2026, Jeju airport losing its last carrier counter in June 2026, are on the pages where they bite. When a reader tells me a counter has moved or an app has stopped asking for a 010 number, I verify it and ship the fix in the next update. This is where to tell me.