private const string kUniRateiOSAppStoreURLFormat =         @"itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=";
    private const string kUniRateiOS7AppStoreURLFormat = @"itms-apps://itunes.apple.com/app/id";

    public void RateNowNative()
    {
#if UNITY_IOS
        if (!Device.RequestStoreReview())
            RateNowNonNative();
#endif
    }

    public void RateNowNonNative()
    {
#if UNITY_IOS
        Debug.Log("Apple Native Request Store Review");

        var iOSAppId = Main.main.Config.Publisher == Publisher.iOSFree
            ? Main.main.Config.iOSAppIDFree
            : Main.main.Config.iOSAppIDFull;
        var url = instance.iOSVersion >= 7.0f
            ? kUniRateiOS7AppStoreURLFormat + iOSAppId
            : kUniRateiOSAppStoreURLFormat + iOSAppId;
        Debug.Log("Rate iOS - " + url);
        Application.OpenURL(url);
#endif
    }