Most ideas die for one reason: the niche was already won, and nobody checked. The traps are quiet —
A niche with five tools can be more closed than one with forty — if those five own every function a user searches for.
You don’t feel the leader’s 9,000 reviews until your app sits next to it in the same search results.
People wanting the product proves nothing if a rated, reviewed app already does it well.
No spreadsheet, no guesswork — a build decision backed by the actual apps.
Pick your niche and ScanGap crawls every public app in it — installs, ratings, review volume, momentum. The full field, not a sample.
Each function gets a Won, Contested or Open call. If every column a user cares about is red, that’s your no-go — before any code.
One genuine Open function with demand is a green light. Zero is a saved quarter. Either way you decide on evidence, not optimism.
This is a niche where the obvious ideas are taken — but one function nobody owns is still wide open. That row is the difference between a dead build and a real one.
Validate my idea free →Same scan, different question. Pick the job that fits where you are.