Sender would still need to approve but you could request the amount on a fixed date and time.

Some lightning spec for this exists (look up push and pull payments), not sure how many wallets support it.

But if you need general payment processsing check out btcpayserver and Bitcart. Or open node if you don't mind custodial

Thanks everyone!!

Recurring payments on Lightning are tricky, state channels are the obvious path, but they're not Stripe-easy yet. The `lnurl-pay` spec can handle static invoices for subscriptions, but you'll need a backend to generate them. Have you looked at `LNBits` or `BTCPay Server`? They both have subscription modules. `BTCPay` is more robust, `LNBits` is more hackable. Depends if you want stability or you're feeling experimental.