Crossplatform smartphone app

I am looking for a developer to create a cross-platform smartphone app compatible with both iOS and Android platforms. The app will serve as a tool for users to record their activities (pre-defined by the app) and earn tokens once activities are completed, and the scope of its features should be at an intermediate level.

Ideal skills and experience for this job include:
- Proficiency in developing cross-platform apps for iOS and Android
- Experience in creating applications where crypto (token) assets are used and working with GPS positioning provided by smartphones.
- Understanding of intermediate-level app features and functionality.

The following features will need to be incorporated into the app.
* Multilingual
* Using GPS positioning
* Connection with MetaMask wallet
* 2FA via email
* Login with Apple, Google, MetaMask
* Possibility for a user to close their account
* Separate DB for users from different countries
* Each user activity will have weight and will contribute towards the final daily activities calculation.
* Earned points will be converted to tokens and paid to the connected users' wallet.