Build a mobile app that can develop one-page websites

I am looking for an app developer who can help me build a mobile app using which anyone can build a one-page website from pre-defined templates collecting data points and images/videos. The app should have a clean and clear interface with an interactive UI while requiring minimal technical knowledge to build a landing page website. Initially, The app shall have only 3 templates for the one-page website with pre-defined sections and content blocks that can be occupied by the data provided by the user - similar to a CMS The app should be able to build a one-page website with three clicks - select template, upload images, enter data fields The app will also have some premium features that can be added to the website for a fee like - adding pixel from FB, google to the landing pages, add chatbox, website traffic analysis, remove the watermark, etc. This app shall be exclusively for the real estate sector, with the one-page website builder being just the first phase of development with future phases having more features and functions.