A week after I came up with the idea of building NotifyMe.Music, I had a fully operable service that lets you subscribe to a favorite artist and be immediately notified once the artist releases a new song. I launched advertisements in several Telegram channels (10 to 20 in).
During the next months, I had active development and the number of active users grew up to 1000 users.
To my disappointment, I got 0 paid users for 6 months after the initial launch. But the number of users is consistently growing - on average plus 2 users every day. Agree, not much, but I don't give any advertisement.
In the middle of the fall of 2020, I decided to make a service fully free without payable plans.