Custom Route Navigation App Development

I'm seeking an experienced mobile app developer to create a unique navigation app for Android, with potential for iOS in the future. This app will allow users to input a word (like "heart", "iron", "circle", etc.) and generate a route based on that shape using their current location and a user-selected location. The start and end point must be the same.

Key features include:
- Voice-guided navigation
- Route generation based on user-inputted words/shapes
- Support for car, bike, and walking routes
- Text input for shape/word entry

Ideal candidates should have:
- Proven experience in mobile app development, especially in navigation apps
- Familiarity with AI integration in app functionalities
- Strong skills in implementing voice-guided navigation features
- Ability to create user-friendly text input interfaces

Please provide examples of similar work done in your bid.