I run NYC Dating for Android and will be on iOS very soon:
NYC Dating App linked to NYC Dating Site
I am now inviting Developers, Admins, Moderators and Team Members to be a part of something that is rapidly growing...
I get DAILY installs which lead to full registrations thanks to the Play Store exposure and would just like to share some notes with our community...
Installs seem to start increasing after 100-200 installs and once you Officially reach the 500 install badge, it starts to rapidly increase.
The more installs you get the quicker you will get them and this becomes directly proportional to your ratings and reviews.
So, to start out, you need to acquire some installs coupled with high ratings/reviews by yourself, through friends and through your site.
The more you get the better, but then you literally have to either wait for natural growth or spend some money on install conversions in Google Adwords.
A Major impact on natural growth is Brand, for instance NYC Dating used to be called Taste and was targeting San Francisco. It did absolutely nothing when it was targeting SF for whatever reason so one day I just randomly decided to target a different Niche when I realized how easy it was to technically change the "App Name" in the Play store.
This lead to an immediate change in installs and eventually got me to an average of multiple user registrations per day with the minimum amount being at least 1 per day.
The point is don't be afraid to re-brand and re-target if your current target demographic hasn't been successful.
Attached Screenshot after re-brand / re-target is Entirely Natural Growth after initial ratings.
That's Just My Two Centz...