I hope you'll find it useful. Here’s a list of various groups of fellow entrepreneurs that support self-promotion and can provide great feedback on your product:
Slack
Any other groups I should add to the list?
P.S. If you find the list helpful, please consider checking out my product - Waterful - a health & fitness app that turns daily hydration into a fun habit.
Feel free to drop me a comment or join the waiting list! :)