You may use tool like Checkmyidea-IA to validate your idea.
It will help you to :
+ Identify if your idea meets a real market need
+ What methods to test the viability of your idea quickly and at a low cost
+ Analyze competition for your idea
+ Determine if your idea is technically feasible with your skills
+ The needs and behaviors of your users
+ To market your idea and acquire your first users
There are similar tools on the markets, but this is one is for modern webmarketing.
Marshmallow Icon Kit