Cross-Platform Location Sharing App

I'm looking for a developer who can create a location-sharing app for both iOS and Android. The main function of the app is to allow users to share their current location with contacts.

Key Features:
- Cross-Platform Compatibility: The app should be seamlessly operational on both iOS and Android.
- User-friendly Interface: The app must have an intuitive and easy-to-navigate interface.
- Location Sharing: The core feature of the app is to enable users to share their real-time location with their contacts.

Ideal Skills:
- Experience in developing cross-platform mobile applications
- Proficiency in using Flutter or React Native
- Strong understanding of implementing location services in mobile apps
- Excellent UI/UX design skills
- Prior experience with location-sharing apps is a plus

Please provide examples of similar apps you've developed in your bid.

Additional Details
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I need help developing an iPhone & android app.

The user will fill up the data entry form and then share its location.
Every 5 or 10 mins, the app will send the location to the backend.
Data entry form will contains
1. UUID
2. Name
3. Truck number: Truck number
4. Parcel Id:
5. Drop down: Start / End trip.
6. Checkbox: 1. Morning, 2. Afternoon, 3. Evening, 4, Night

All this data should be sent to REST api.
User location should be sent along with their UUID, every 5 or 10 mins.
The app should only work, if user has permanently shared their location.