Try to be what every other app is not
Instead of being the same as Grindr and Scruff, be different. Do something that will increase the number of men using the app. This morning, there were only 30 guys in a 5 mile radius and only four of us were online. Promote the apps to not only those not using the app but to those who use or once used it.
Thanks for the feedback! Our marketing team is always looking for ways to promote the app and we will make sure to pass your message along. Thank you!