Jetpac

Jetpac launched in 2022 and has grown quickly with backing from KDDI, the Japanese telecom giant, giving it a stronger network relationship in Japan and East Asia than most independent eSIM apps manage. Its coverage spans more than 200 destinations with multi-network auto-connect, meaning the eSIM tries more than one local carrier rather than locking you to whichever one it picks first, which can matter in countries where coverage quality varies by network.

The 30-day unlimited plan runs at full speed for the first 3GB in any 24-hour window, then throttles to 1 Mbps, a cap Jetpac states upfront rather than leaving to the fine print. What sets it apart is a zero-rated app list: WhatsApp, Uber, Grab, and Google Maps keep working even after your data allowance is fully used, so a depleted plan doesn't leave you stranded without navigation or a way to call a ride. Voice isn't included by default, but a separate voice pack add-on covers roughly 50 countries at a per-minute rate. Refunds apply only to technical failures within 30 days, not after activation. It's a strong pick for travelers heading to Japan, Korea, or Southeast Asia who want a real safety net once their data runs low.