iRoamly does not provide an unlimited data eSIM for Croatia. The available options are fixed data plans that give a set amount of data for a limited period. For example, a 500GB plan is valid for 90 days, a 200GB plan for 30 days, and a 100GB plan also for 30 days; all of these plans support tethering and use 5G where available.
Choosing a fixed data plan can be more cost‑effective for most travelers, unless the user expects to consume data well beyond the plan’s allowance.