Surfroam

A digital nomad's data use rarely follows a neat monthly pattern: some weeks involve heavy video calls and cloud uploads, others almost nothing if you're mostly working from a co-working space with its own wifi. Surfroam, operating since 2016, is built around that unevenness with per-kilobyte billing and rollover balance tiers, so unused data from a quiet week carries into a busier one rather than resetting on a fixed monthly cycle.

The tier structure, ULTRA, PLUS, and GLOBAL, determines how large a balance you can hold and roll forward, with pricing and coverage details worth checking directly for your specific destinations before committing, since Surfroam doesn't publish as detailed a country-by-country breakdown as some larger competitors. It's data-only, aimed at long-stay use rather than a two-week holiday, where the rollover benefit doesn't have time to matter. It's a reasonable option for a nomad who tops up every few months instead of paying for a fresh plan they might not fully use.