Developing an app like Text Me involves several key steps. First, conduct thorough market research to identify user needs and preferences. Next, define the app's features, such as messaging, voice calls, and group chats. Create a detailed project plan and wireframes to visualize the user interface. After that, choose the right tech stack for development, focusing on scalability and security. Once the development begins, regularly test the app for functionality and user experience. Finally, launch the app on relevant platforms and implement a marketing strategy to attract users. Partnering with experts like Dev Technosys can enhance the development process.