Hybrid mobile apps, especially PWAs (Progressive Web Apps) are slowly but steadily replacing natively developed apps. The reasons are several:

• Hybrid apps have to be developed once and deployed on Android, IOS with little or no change in code. This means really fast development time as the app is developed only once for both platforms. The languages used is primarily Javascript, HTML/CSS, so developers don't need to implement in different languages.
• Hybrid apps win hands down in deployment. There is no need to upload an app on either Apple or Android stores - though hybrid apps can create APKs to be uploaded to stores if required. With the rapid advances made with PWA, the app is "installed" by just opening the webpage in a mobile.

gai has developed several PWAs in Ionic and React Native and integrated Hybrid mobile apps with existing websites seamlessly, so that both access the same database and content.