Keepgo

Keepgo's rollover model flips the typical prepaid eSIM structure on its head. Rather than data expiring after 30 days, any balance you don't use stays in your account indefinitely, as long as you top up at least once per year. This makes it cheaper for people who tether a laptop or tablet across multiple short trips over months, since unused data doesn't vanish.

The long-validity approach works well for irregular travelers who don't want to waste money on new bundles each time they leave home. If you're someone who travels sporadically but frequently throughout the year, the savings add up.