While payments are currently possible with Expo, it requires ejecting from the Expo managed workflow and dealing with complicated procedures and debugging using native IDEs.
This process is definitely not for the faint hearted or for those without any native development experience.
Therefore, in the spirit of keeping things simple for everyone, I’ve decided to hold off on implementing payments until Expo release a payments module that can be used in the managed workflow without ejecting.
The good news is that this is the most requested Expo feature and is currently in development.
As soon as Expo release their in-app payments module, I will release a Gravity Native update to all customers, for free with support for in-app payments.
If you need payments urgently, you can eject your Gravity Native app at any point and install the Expo payments module.