But 50 sats a day times 30 is 1500 sats a month. Maybe have 2 models an pay as you go model and a monthly subscription model. Just an idea, good luck with the development and help #NostrGrow
Every message in Keychat is sent from a unique address, rather than using the ID as the sender's address, thereby better protecting metadata privacy. Therefore, relays cannot confirm the sender's ID, which also prevents the use of a subscription fee model. Apps like Damus are able to use a subscription model because public notes are sent from user IDs.