Describe your idea
One sentence, any kind.
Has my idea been done?
Type your idea in one sentence and find out who is already doing it, how crowded it is, and where there is still a gap.
How it works
From one sentence to a straight answer.
We research the live web
Real competitors, real prices, real reviews.
Get a straight answer
What exists, where the gap is, what to do next.
A free business idea validator that shows its sources
Every competitor, price and gap in your result links back to a real page on the live web, so you can see exactly where it came from. Nothing is made up, and if we cannot find good evidence, we say so plainly.
Questions people ask
How do I check if my business idea already exists?
Type your idea in one sentence and press See what exists. SideSus searches the live web for businesses, products and creators already doing something similar, then tells you how crowded the space is and where there is still a gap.
Is SideSus free?
Yes. The free check shows the verdict, up to three close competitors, how crowded it is and one gap. If you want every competitor, demand numbers and next steps, there is an optional full report for £9.99.
What kinds of ideas can I check?
Almost anything you could start: apps, platforms, online shops, local services, products, side hustles and content niches. We only turn away ideas that are impossible, harmful or not really an idea.
How is this different from just Googling it?
Googling gives you a page of links to sort through yourself. SideSus runs the searches for you, picks out the real competitors, and sums up how crowded it is and where the gap is, with a link to every source so you can check it.
Will my idea stay private?
Yes. Your idea is used only to run your check. We never publish it or share it.