How do you do that?
Discussion
There are several ways but maybe easiest is to download wallet of Satoshi and paste the invoice here
Is it possible to have a non custodial wallet on iOS?
Yes
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Recommendations for non custodial wallets on iOS
Thank you
here is another one, but you need to be running your own lightning node to connect to it: https://apps.apple.com/us/app/zeus-ln/id1456038895