Wave.Space App than Enables "Tap-to-Pay"

If Apple Pay or Google Pay integration are not possible, or even if it’s preferential to not have to use them, a native app that could run on iOS (if not blocked), Android (again, if not blocked) or Graphene would be great. Currently, users are using Garmin Pay to link their cards, but would be great to also be able to pay from the phone.

NB Ideally I no longer need to carry a wallet.