I've shipped faismoibg.com in France a month ago, this is a slots booking app like Calendly with tailored features for freelancers beauty artists (nails, brow, ...), eg features: forms with images before booking, manual validation by the beauty artist, deposit with reference to validate booking. Our app calendar is 2 ways integrated with Google Calendar. One month advancements: around 15 accounts created, 6 active users, out of which 3 took the yearly subscription and 1 took the monthly subscription. This made 200€ of revenue since we had discounts for launch.

I'm the tech cofounder and not in charge of customer acquisition per say. The reason I'm asking HN on is thread:

The only way we've found to reach our target for free is through Instagram DMs, however, Instagram allows 50 unique dm per day, our new dms read rate is 30%, out of which 1% to 5% create a new account.

This product seems to be meant to have a really slow growth if we continue this way. Any advice/strategy/feedback that applies here, on how we could potentially accelerate growth and visibility?