Roamless

Roamless is one of the newer entrants here, founded in 2023 and backed by a $12M Series A raised in December 2025, and its whole app is designed around a single idea: one eSIM, one profile, working across more than 200 destinations without you swapping to a new one at each border. The app automatically routes you to the strongest available local network rather than sticking to one operator per country, which is the kind of thing that only really works if the underlying app logic is built for it from the start.

Rather than forcing a choice between pay-as-you-go and a fixed bundle, Roamless offers both from the same account: "Flex" credits that get spent per megabyte or minute and never expire, alongside fixed 5, 10, or 20GB plans with 30-day validity for people who prefer predictable pricing. It also includes calling, SMS, and a second phone number, a genuinely rare combination for an app-first eSIM, since most competitors are data-only. Refunds are limited mainly to device-incompatibility issues found before you start using the eSIM. It fits frequent travelers and light, occasional users equally well, since the credit system doesn't penalize you for using the app rarely.