App Store Market Gap Finder: new apps winning in one country, missing in others

Find app ideas that are already proven somewhere. This Actor scans the App Store top charts in 50+ countries, keeps the new apps that top the charts in only 1-3 countries, then checks the big markets (US, UK, France, Germany, Brazil, Japan, Saudi Arabia...) where those apps are not available or not charting.

Every row is a market gap: an app people already pay for in one country, with no presence in others.

Built for app founders, indie developers, studios, investors and AI agents doing market research.

What you get

App	Charting in	Not available in	Released
Weekly budget meal planner (Food & Drink)	Israel #1	US, UK, FR, DE, ES, IT, BR, JP, SA, AE	2026
Trading card price sniper (Shopping)	Netherlands #1, Belgium #14	US, UK, FR, ES, IT, BR, JP, SA, AE	2026
Budget meal planner (Food & Drink)	Hungary #1	9 of 10 markets (all but US)	2026
Medical exam study app (Medical)	Germany #7, Austria #8	US, UK, FR, ES, IT, BR, JP, SA, AE	2026

Real examples from a November 2026 run (top-grossing charts, 56 countries, 12 categories).

Each row includes:

• appName, developer, categories, releaseDate, appStoreUrl
• chartingIn: countries and ranks where the app charts
• bestRank: its best position
• notAvailableIn: target markets where the app cannot be downloaded (the clearest gap)
• availableButNotChartingIn: target markets where it exists but nobody is paying for it yet
• gapScore: higher means a bigger opportunity (2 points per market where it is missing, 1 per market where it does not chart)
• ratingCount, averageRating, price, languages, summary

A ranked list of the 20 biggest gaps is saved as OUTPUT in the key-value store.

How it works

1. Reads the top 100 of the chosen chart (top grossing by default) for every country and category.
2. Keeps apps first released within the chosen window (default: last 365 days) that chart in at most N countries (default: 3) and reach the chosen rank (default: top 50).
3. Checks each app's availability in your target markets with Apple's lookup API.

Input

{
  "chart": "top-grossing",
  "categories": ["Finance", "Health & Fitness", "Education"],
  "releasedWithinDays": 365,
  "maxCountries": 3,
  "targetCountries": ["us", "gb", "fr", "de"]
}

Leave countries and categories empty for a broad scan (56 countries, 12 non-game categories). One run takes about 1-2 minutes.

Raw charts mode: set "mode": "charts" to export the plain chart entries (rank, app, developer, category, country).

Pricing

Pay per result: each market gap (local hit) returned, or each chart entry in raw charts mode. No subscription.

Good to know

• Data comes from Apple's public App Store feeds. Games are not included.
• "Not available" means the app cannot be downloaded in that country's store today. Some apps are local by nature (banks, government services); check the summary before acting on a gap.