Qrispy eSIM does not provide an unlimited data eSIM for Serbia. All of its Serbian plans are Pay‑as‑you‑go, meaning the data amount listed (for example 10GB, 5GB, 3GB, 2GB, or 1GB) represents the approximate amount of data that the purchased credit buys at the local rate; the credit does not expire and can be topped up whenever more data is needed.
For travelers who want a large data allowance, Qrispy eSIM offers Pay‑as‑you‑go credits such as the 10GB plan for $91.00 USD or the 5GB plan for $45.50 USD. Because the user pays only for the data actually used and can add more credit as required, Pay‑as‑you‑go can be more cost‑effective than an unlimited plan unless the traveler is an extremely heavy data consumer.