Your app is well designed and it get higher ratings about 4.6. However, it only generates 60+reviews, it is not so good for your app to attract potential users. You need to try other ways to market your app besides forums.
Keyword optimization is good method to optimize the keywords related to your app. As we know, one user will enter letter in Store search bar, so if the keyword can be shown in first line, and your app ranks top on this keyword, you app will get more installs, attention at least.
Buy app ratings & reviews
One app can get reviews, it must get installs firstly. Reviews provider like http://www.BestReviewApp.com and http://geekreviewapp.comwill guide real users to install app, play and reviews it with ratings. This method will help a lot on app overall ranking. At the same time, the traffic is from real users which is organic. It will Not have bad impact on apps.
Higher ranking is extremely helpful for app visibility. App can get installs from users directly via download link or drive install via keyword search. The former method is straight forward install amounts singly. While latter one aims at helping app ranking in App Store search results-http://ASOtop1.com can help you on this.
Buy ratings only
Potential users are not familiar to your app, so they will prefer to download app which is ranking higher and rating high. http://www.Reviewapp4u.com is great to offer app ratings both for Android and iOS apps!