Firsty

Firsty's free tier provides genuine basic data connectivity across 185 countries at zero cost, funded by in-app advertising. For light travelers who check email and messages occasionally, this removes the eSIM cost entirely. Paid plans don't have expiration dates, so your subscription stays active as long as you need it.

Budget travelers and those taking their first eSIM trip often start with Firsty to avoid upfront expense. The ads and slower speeds on the free tier appeal to people comfortable with a trade-off between cost and convenience, though power users generally opt for a paid provider.