If you're searching in a single entity, the gallery widget on native kind of does the same thing. It allows you to set certain attributes to search for in a single search box, and updates the results as you type.

I found an interesting article about Native platform AutoComplete functionality that basically solves this :

https://medium.com/mendix/how-to-create-a-search-functionality-in-a-mendix-native-mobile-app-f6f48b59f1be