Cisco
Yes, both NinjaMock and AppDemoStore offer a Free Trial.
NinjaMock is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
AppDemoStore is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for NinjaMock Starts at $7.69/Month when Billed Yearly whereas for AppDemoStore Starts at $20/Month.
Some top alternatives to NinjaMock includes Miro, HotGloo, Pidoco, Balsamiq, Wireframe.cc, Wirify, Claritee, Stage, Mockup Clips and Zen Wireframe.
Some top alternatives to AppDemoStore includes Miro, NinjaMock, Balsamiq, Axure RP, Wireframe.cc, Inspireframe, Stage, Mockup Clips, Device Frames, Zen Wireframe and Mockframe by 500apps.