Drimsim

Drimsim operates on a credit-based model, so you load a balance and spend it across data, SMS, and voice calls. Your balance never expires, which means leftover credits roll over to your next trip or stay active if you visit again. The eSIM itself costs €10 upfront, then you add credit as needed.

This appeals to travelers who like flexibility and want to avoid commitments. If you're uncertain how much data you'll use in India or plan multiple short visits, Drimsim's pay-as-you-go model lets you spend only what you need without locking in a plan.