yeah, Highlighter does recurring LN payments; you can create NIP-88 tiers that people can subscribe to to support you, denominated in fiat or sats.

When denominating in fiat conversion happens when a new period starts so your supporters are always charge, e.g. $8 regardless of the price of bitcoin.

The best part is that this are nostr-native events, there is no lock-in and people will be able to subscribe from any client that supports NIP-88.