What are some alternatives?
When comparing Marvel Explore and Mockup Photos, you can also consider the following products
Designspiration - Discover and share design inspiration
Smartmockups - Create product screenshots with just a few clicks, for free
ReDsgn.Co - Discover and read stories about product redesigns
Mockup Generator - Create attractive product screenshots with just a few clicks
Smock - Mockup a live website to a mobile device
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.