I've never heard of any jurisdiction where unconditional refunds are required. A lot do require refunds if the product is faulty but that's different.
> In the EU you have the right to return purchases made online or through other types of distance selling, such as by phone, mail order or from a door-to-door salesperson, within 14 days for a full refund. You can do so for any reason – even if you simply changed your mind.
There is a potential exemption for digital content "if you have already started downloading or streaming it and you agreed that you would lose your right of withdrawal by starting the performance," but Apple does not appear to have its customers agree to that.
Specifically called out in their UK conditions:
> Right of cancellation: If you choose to cancel your order, you may do so within 14 days of when you received your receipt, without giving any reason.
https://www.apple.com/legal/internet-services/itunes/uk/term...
Presumably in other European terms as well, I checked the UK because it's in English.
Actually, with an EU iTunes account, you have an additional popup dialog you have to agree to with every in-app purchase where you have to agree that it does not qualify for the exemption.
They have an "I would like to cancel this purchase" option in the EU for a reason, which gives you an unconditional refund within 14 days as long as you didn't get that popup when purchasing.
https://europa.eu/youreurope/citizens/consumers/shopping/gua...
> Right of cancellation: If you choose to cancel your order, you may do so within 14 days of when you received your receipt, without giving any reason
It seems pretty random when it's applied though. Some got it after just one refund, meanwhile I've had multiple refunds, and I got that popup once for a $1 purchase but then never again and I was able to request a refund again.