App Store Country Compare — One App, Every Store

The App Store is not one store. It is 175 separate storefronts, and the same app has a different rating, a different review count, a different price and often a different description in each one. Sometimes it is not on sale there at all.

Every other App Store Actor checks one country. This one checks all of them at once, and tells you where your listing is losing.

What it finds

Three real apps, 30 storefronts, 1.4 seconds:

App	On sale	Listing text differs from US	Best store	Worst store
Notion	29 / 30 — missing in Russia	28	BR ★4.88	TR ★4.59
Instagram	30 / 30	29	MX / BR ★4.81	SA ★4.34
YouTube	30 / 30	16	BR ★4.74	SA ★4.17

Read the YouTube row. It is rated 0.57 stars lower in Saudi Arabia than in Brazil, and its store listing is identical to the US in 14 of the 30 countries checked. Neither fact is visible from a single-country lookup, and both are things a product team acts on.

What you get

One record per app per storefront, including the storefronts where the app is absent:

{
  "app_id": "1232780281",
  "title": "Notion: 메모, 작업, AI",
  "country": "kr",
  "is_available": true,
  "rating": 4.7766,
  "rating_count": 41189,
  "rating_rank": 9,
  "rating_delta_vs_best": -0.1,
  "reviews_rank": 3,
  "reviews_share_pct": 9.63,
  "is_localized": true,
  "price": 0, "price_display": "Free", "currency": "KRW", "is_free": true,
  "price_differs": false,
  "version": "1.7.333",
  "version_matches_reference": true,
  "countries_available": 29,
  "countries_checked": 30,
  "reference_country": "us",
  "genre": "Productivity",
  "url": "https://apps.apple.com/kr/app/id1232780281",
  "source": "Apple iTunes Search API (official, public)"
}

A storefront where the app is not sold comes back explicitly:

{ "app_key": "1232780281", "country": "ru", "is_available": false }

Group	Fields
Cross-country	rating_rank, rating_delta_vs_best, reviews_rank, reviews_share_pct, is_localized, price_differs, version_matches_reference, countries_available
Listing	title, developer, seller, genre, genres, content_rating, description, release_notes
Ratings	rating, rating_count, rating_current_version, rating_count_current_version
Commercial	price, price_display, currency, is_free
Build	version, version_released_at, released_at, minimum_os, size_mb, languages, supported_devices
Media	icon_url, screenshot_urls, screenshot_count

Two notes on how the derived fields are computed:

• is_localized means the store listing text differs from the reference storefront. English-speaking markets often share identical copy with the US, so false there is normal rather than a gap — the signal is most useful for non-English stores.
• reference_country defaults to us. If the app is not on sale there, the store with the most ratings is used instead, since that is the app's real home market.

Input

Field	Type	Notes
apps	array	Numeric App Store IDs (1232780281) or bundle IDs (com.burbn.instagram)
searchTerms	array	Look apps up by name instead of ID
countries	array	Two-letter codes, or major (30 biggest, default) or all (60)
referenceCountry	string	The store everything is compared against. Default us
includeDescription	boolean	Return the full localized description. Off by default
availableOnly	boolean	Omit storefronts where the app is missing. Off by default
maxItems	integer	Cap the run. 0 = no limit

The numeric ID is the digits at the end of any App Store URL: apps.apple.com/us/app/notion/id1232780281 → 1232780281.

Who this is for

• App developers and ASO teams — where is the listing unlocalized, where is the rating dragging, which stores is the app missing from entirely
• Competitive analysts — how a rival's app performs market by market, and which markets they have not entered
• Investors and market researchers — geographic distribution of an app's user base, read from where its ratings actually come from
• Localization teams — a direct list of storefronts still serving English copy
• AI agents needing structured, current app-market data

Notes

Official Apple API, not scraping. Every request goes to itunes.apple.com/lookup and itunes.apple.com/search — Apple's public, documented Search API. No key, no quota, no login, and nothing to block. Thirty consecutive country lookups returned 30/30 successes in 5.9 seconds during testing.

No personal data. Only app listing metadata is returned. Customer reviews, which carry user-written content and nicknames, are deliberately not collected.

Rating values are Apple's own. rating is the lifetime average for that storefront; rating_current_version covers only the current release. They diverge sharply for apps that recently shipped a bad update — worth checking both.

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Development

$apify push

스토어프론트 목록과 API 호출은 src/itunes.py, 나라 간 비교 계산은 src/normalize.py의 add_cross_country()에 있다.