The best Marvel scenario is when you have an application that has different navigability options, and it is a long project. Marvel works to design these applications, as well as give a demo in the design to present it to customers and visualize how your application will be on the client side. This is an advantage for the whole team because the client knows what to expect, and the developer know what to develop. I also appreciate the logical order between options and navigation, which allows you to carry everything out very cleanly when working. Now, if there are projects that are short and do not have a level of design that requires you to present your application to a client in a visual way, it is not necessary to work on Marvel, since the ideal use of this application is to really see the scope of a project, to see in a visual way what will be presented and how it will look, and to see functions and features that will be available in some way when the application is developed. That is the great advantage of using marvel.
Proto.io is an excellent product for small to medium teams that wants to have a prototyping or wireframing tool that is easy to use, can be used in collaboration with others and will deliver superior results with less efforts than similar options in the market. I think it is not so suited for teams that don't have more complex prototyping needs. In this case, other tools that are even simpler could be a better fit.
Marvel isn’t the most robust prototyping tool, but its simplicity is what makes the tool rise to the top when it comes to creating quick, simple prototypes to elicit feedback on designs and iterate upon them. While tools like InVision and Axure provide many tools to make more realistic, animation-heavy designs, Marvel is a go-to for a simple interface that enables designers to “just design.” Sometimes it is not necessary to have all of the bells and whistles of a stronger tool, particularly when a designer is low on time. Marvel’s simplicity allows designers to quickly design and iterate in time crunches without the distractions of fancy bells and whistles.
Proto.io is web-based for one, which is a plus - Adobe XD is a desktop application. Adobe XD has some great features, especially for a free product, but from what I experienced Proto.io had way more tools and customization for creating interactive prototypes. Adobe XD is good for building prototypes that go from screen to screen, but Proto.io allows you to get much more detailed with that (every element on the screen can have an interaction).
Creating prototypes of applications, or sites in marvel, guarantees me a considerable return, as it saves time and effort, because the client is quickly introduced to the various stages of prototyping, which avoids rework.
Another plus point, it's free!
No need to download programs, it's all done online.
