Marvel is a very strong tool in scenarios where designers seek to quickly create simple prototypes on their desktops using a simple, intuitive interface. It offers “just enough” functionality to create somewhat realistic designs to present to stakeholders and other designers. However, there’s a limit to how “realistic” those designs can be, given that Marvel has somewhat limited functionality around animations. Marvel is not a strong option for those who want to create very complex prototypes with many animations, or for those who want to edit prototypes on their tablet or phone. Marvel is a jewel for simplicity but starts to be difficult to use when creating complicated designs. For creating more complicated prototypes, I would recommend a more robust tool, such as Axure.
MockFlow is a great tool for low-fidelity wireframing for quick validation & contextualization of UX & UI hypotheses. It is not a substitute for full-fledged designing tools such as Figma or Adobe XD.
I really miss being able to duplicate, make a copy of the prototype I'm working on. Sometimes, I want to make a comparison with detail changes and without being able to duplicate it is difficult.
Compared to other similar services, I feel the animations could be more fluid and smoother.
It could have more free sophisticated icons and images.
Ultimately, InVision was just a better fit for our company's needs. It's probably faster to create prototypes using Marvel, but InVision's collaboration features (comments, notes, etc.) are much more robust, which was helpful for our large team spread across multiple continents. InVision also offers more advanced features, and Marvel felt a little too limited for our overall business needs.
Figma is a high-fidelity designing tool and provides too many features which would be overkill if we are looking for basic prototyping. Also, if you are not a designer and just want to create basic wires or prototypes as a Business Analyst or Product Manager, MockFlow would suffice your needs. But if you are focusing on pixel-perfect designs then I would suggest going for Figma. The ease of usability with MockFlow is very convenient as there would be a steep learning curve for Figma. Balsamiq is very similar to MockFlow but the wires created in it look a bit sketchy & clumsy.
