RateMe ANE (iOS+Android)
Rate App Air Native Extension lets you ask your users to rate your app in the most efficient way. i.e you can make sure you are asking for users feedback only when you are sure that they have found your app interesting and are using it frequently. This will help you avoid bad reviews as much as possible.
Optionally use the new iOS API SKStoreReviewController
On iOS devices, you have the option to use the new rating API which allows users rate your app without leaving your app. With this ANE, you can easily use the new API or keep on using the older classic approach.