What are some alternatives?
When comparing hireframes.com Mobile Sketchpad and Figma Map Maker, you can also consider the following products
Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
Figma Super Tidy - Figma plugin to easily align, rename and reorder your frames
Source Wireframe Kit - Library of 537 blocks for desktop and mobile prototyping
Viewports - Figma plugin to set screen sizes with market share in mind
Method Wireframe Kit - Find your method of being incredibly fast in prototyping.
Figma Plugins - Extend Figma with plugins. Easy to create. 1-click install.