Building a 1-to-1 video chat app with Java or Kotlin can be an real estate digital decluttering services exciting project! Consider utilizing WebRTC for real-time communication, along with libraries like Twilio or Agora for added functionality. Focus on user experience, ensuring smooth video streaming and reliable connectivity. Don’t forget to handle security aspects like encryption and authentication carefully. Utilizing frameworks like Android’s CameraX can simplify handling video input. Good luck with your development journey!