Android is the world's most popular mobile phone operating system by market share, so if you want your app to have the widest possible reach you need to be on Android. Depending on the technologies used in your iOS app, it might be a relatively easy process to port your app from iOS but that's not without risk and for the best experience for your users, you'll want to consider all of your options, including developing a fully native Android app.
Android users, like iOS users, have built up expectations of what a good app should behave like on the the. It's no secret that apps that embrace a platforms design and user experience conventions tend to do better from a user engagement and satisfaction point of view.
Like Apple, Google will from time to time feature apps that do a good job of leveraging Android's Material Design and the native Android APIs. This may not sound like a huge loss compared to the cost savings of just porting over a hybrid solution, but it's a well documented fact that apps featured by Google in the Play Store tend to enjoy significant downloads when compared to non-featured apps. Sadly, if you aren't developing a native Android app and are just porting a web or other third codebase to the platform, then it's unlikely that your app will be able to achieve the level of platform integration that Google tends to feature.
For maximum user reach on mobile, you need to have your app on Android and do more than just a shallow port. Before committing to just porting your app over from iOS, contact us for a free consultation on getting your app on Android in a way that will dazzle your users.