You describe an app idea in plain English. We work out what somebody would type into App Store search to find a thing like that, look up who currently shows up for those phrases, and tell you which of them you could realistically place in.
It is a viability check, not a rank tracker. The question it answers is "is there room here" — before you spend six months building.
Everything we show comes from Apple: the public search results, the public charts, the public listing data, and search volume from an Apple Search Ads account. We have no private access to anybody's App Store Connect, and nothing here is a prediction.