Contact person: Cross-Platform BLE Toy App

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Location: Naples, United States

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I’m building an interactive toy that talks to a phone over Bluetooth Low Energy and I need the full mobile app for both iOS and Android. Core requirements are:

• Reliable BLE scanning, pairing and reconnection routines.
• Data transfer in both directions so the toy can stream sensor readings while the app sends configuration data or firmware updates.
• Real-time device control—tapping buttons or using sliders in the UI should trigger immediate actions (lights, sounds, motors) on the toy.
• Proximity sensing to alert the user when the phone moves out of range or when the toy gets close enough to unlock extra content.

You’re free to choose the cross-platform toolkit you’re most comfortable with (Flutter, React Native, Kotlin Multiplatform, etc.) as long as native BLE performance is maintained. Once the BLE layer is solid, I’ll layer in graphics and game logic myself, so clean, well-documented code and a clear API boundary are important.

Deliverables:
1. Complete project source with build instructions for Xcode and Android Studio.
2. A brief README explaining BLE packet structure, characteristic UUIDs and any third-party libraries used.
3. Test build on TestFlight and Google Play Internal Track demonstrating the three BLE features above working with my prototype toy.

I’ll provide the GATT specification, toy firmware and design assets as soon as we start." (client-provided description)