This stage includes creating a mockup. A mockup is a visual interface model that is used to represent the concept, design, and functionality of a future product. It is created using special software tools.
The interface should be intuitive and easy to use. It should also allow the user to easily select options and parameters to customize the product. In addition to the mockup, at this stage, technical documentation and video explanations on the functions of the future product are also being created.
Taken together, this is the complete terms of reference for the project. After creating the TOR, you can most accurately estimate the time and cost of development.