Create a detailed proposal for a mobile application that seamlessly integrates the OpenAI, Eleven Labs, and Canva APIs. The proposal should include the following elements:

1. **Objective**: Clearly define the purpose of the app and the problems it aims to solve.
2. **Features**: List and describe the key features that will leverage the capabilities of each API, including:
   - How OpenAI's API will enhance user interactions or content generation.
   - Ways in which Eleven Labs' API can be utilized for audio or voice features.
   - The integration of Canva's API for design and creative functionalities.
3. **User Experience**: Outline the user journey from onboarding to using advanced features, including any interactive elements that will make the app engaging.
4. **Technical Requirements**: Identify the technical stack needed to implement the integration and any specific challenges that might arise.
5. **Monetization Strategy**: Suggest how the app can generate revenue, such as subscription models or in-app purchases.
6. **Target Audience**: Define the intended users and how the app meets their needs.

Ensure the proposal is comprehensive and demonstrates a thorough understanding of how to effectively utilize these APIs in synergy.