[laurent123456]

Getting a chargeback in Stripe is costly. As soon as a dispute is started there's a fixed $25 that won't be refunded even if you win the dispute.

So for a service at $4 a month which is likely to get a lot of fraudulent payments I wonder if it's really viable.

One thing he should do is immediately cancel accounts and refund subscriptions when there's an early fraud warning. They are usually accurate and help avoiding those fees.

[StayTrue]

This was my thought as well. I wonder if the author couldn’t achieve similar friction without charging. Require a card for signup but only authorize it in the case of “free tier” users. PayPal will let me do that for free, not sure about Stripe.