Cross-Platform App Development Needed

I am looking to have a single application built and deployed for the web, iOS, and Android. The core idea is ready; I now need a developer who can turn it into a smooth, consistent experience across all three platforms using a shared code-base or another efficient approach you prefer.

Please show me examples of similar projects you have already completed. A quick link to the live product, store listing, or a short video demo is ideal; code samples are welcome if they illustrate architecture or problem-solving. I do not have a strict deadline, so we can agree on milestones that match your typical release cycle and testing workflow.

Final deliverables will include:
• Fully functional web, iOS, and Android builds
• Source code with clear documentation
• A short hand-off session (video call or recorded walkthrough) so I can maintain and scale the project after launch

If this sounds like a good fit, share your past work and let’s discuss next steps.