Define your requirements: Before you start searching for on demand app developers, it's important to define your app requirements clearly. This will help you identify the skills and expertise you need from your development team.

Look for experience: Experience is crucial when it comes to on-demand app development. Look for developers who have a track record of successfully delivering similar projects in the past.

Check the portfolio: Always ask for the portfolio of the development team you are considering. This will give you an idea of the quality of work they have done in the past and their area of expertise.

Check client references: Ask for client references and contact them to get a sense of the development team's communication skills, project management, and overall professionalism.

Consider the team's communication skills: Good communication is essential for successful on-demand app development. Ensure that the development team you hire has strong communication skills and is available to discuss the project with you regularly.

Look for technical expertise: On-demand app development requires technical expertise in various areas such as back-end development, database management, and API integration. Ensure that the development team you hire has the required technical expertise.

Choose a team that provides end-to-end services: Choose a development team that can provide end-to-end services, from ideation to deployment, and ongoing support and maintenance.

Consider the development methodology: Agile development methodology is widely used for on-demand app development. Ensure that the development team you hire follows this methodology for efficient and effective development.

Choose a team that prioritizes security: On-demand apps deal with sensitive user data and payment information. Ensure that the development team you hire prioritizes security and takes appropriate measures to protect user data.

Consider the budget: Finally, consider your budget when hiring on-demand app developers. Ensure that the development team you hire provides quality services at a fair price that fits your budget.