Thank for the feedback, sorry if I made you confused but on what I am working on is not similar to what was on marketopia (actually, as I know that website is not anymore updated).
Let me give some examples of the differences:
If I am decided to go into a category (let's say "crowdfunding" which you cannot find as category on TF )
(build a theme) I need to know following thing
a. how many items are there (just active one, those who do sales)
b. How many sales in that category (to see your opportunity)
c. Average sales for an Item and lot more.
Next, for ex. Opurtunities:
a. I try to get information about all business categories and total business in that category for ex. let's say "aquariums" how many aquariums are and how many themes is in that category and if there are any sales ... the app can suggest you in what category you need to move, as we know the niche themes are the success.
Next. for ex. Competitors (I guess that's most important) it's really important to know lot information about your competitors:
a. Sales (that's fine but not enough)
b. Comments (it's really important to know what customers are asking from your competitor)
c. Social Activity
that's just examples that will like to have in app and I would like to here more from you.
Any suggestions are much appreciated.