Start with the same search.
Look at the apps appearing for a keyword your audience might type. Those results are more useful than a generic list of popular apps because they share the user's immediate intent.
Read the full listing.
Compare titles, subtitles, categories, screenshots, ratings, and recent updates. Notice which promise each app makes before you decide what is missing from your own listing.
Compare countries separately.
An app's position and presentation can differ by storefront. Research the countries you care about instead of assuming one market represents all of them.
Keep estimates in perspective.
Download and revenue estimates can help frame a niche, but they are not a competitor's actual sales reports. Public listing information and your own product judgment should carry more weight.
Turn observations into a decision.
For each competing app, write down the search term where you found it, the promise in its title and screenshots, and one gap your own app genuinely addresses. For example, if the top results all emphasize complex project management but your app is built for a simple daily plan, test whether a more specific planning term brings up apps closer to yours.
Do not copy another app's wording or assume that its position proves a particular title works. The useful outcome is a clearer picture of user intent and a shortlist of differences worth testing in your own listing.