Yes, Nextend Social Connect works well with iOS WebView and Android WebView.
However, Google does not allow WebViews to use its OAuth protocol. Because of this, the Google Login buttons will be hidden in both iOS WebView and Android WebView.
If you would have to develop the ability to log in to your site via WebView, feel free to contact us and we can help you creating API calls to Nextend Social Login. This way you wouldn’t have to develop the whole login process, only the way your app communicates with Nextend Social Login.