Why does my app rank differently in different countries?

Because each country is a separate storefront with its own catalogue of available apps, its own competitors, and its own demand and popularity signals. The store ranks your keyword against a different field in every market, so the same app and term can be near the top in one country and buried in another.

Is it enough to track per country, or do I need per language too?

Per language too. Inside one country an app can have listings in several languages, and each localised listing only competes for searches in its own language. A Spanish and a Catalan listing in Spain rank separately, so the tracking unit is store, country, and language.

Why not just track one global ranking to keep it simple?

Because a global average hides the very things you need to act on. An app that is number 3 at home and 45th elsewhere averages to a number that describes neither, so you would miss your strong markets, your weak ones, and any competitor taking a region. Per-market tracking keeps that information intact.

Why you should track rankings per country and language

Q: How does tracking per language help if I have not localised yet?

It reveals the gap. If a market is served an untranslated fallback listing, it competes for none of the local search terms, and a country-only view would never show that. Tracking per language tells you which markets still need a real translation.

There is no single global rank

It is tempting to ask "where does my app rank for this keyword?" as if there were one answer. There is not. The same app and the same keyword sit at very different positions depending on the market, because each market is its own search space. A term you own in one country can be buried in the next, and even two listing languages in the same country can rank worlds apart.

One keyword:budget

English

#34

Portuguese

#72

Spanish

#9=

French

#123

German

#185

Hindi

#241

Catalan

#318

Japanese

#45=

gained positions=heldslippedvs last week

One app, one keyword, eight different truths. Notice Spanish and Catalan in the same country rank apart, and each market moves on its own. A single global number would blur all of it, so AppTracker tracks every market separately and shows how each is trending.

Illustrative example.

Each country is a separate storefront

The App Store and Google Play are not one global catalogue, they are a separate storefront per country. Each has its own set of available apps, its own competitors, its own demand, and its own popularity signals. The apps people install most for "budget" in the United States are not the ones they install in Japan, so the ranking for that keyword is computed against a completely different field in each place. Your position is only meaningful relative to the market it is measured in.

Language splits it again, inside one country

Country is not the whole story. Within a single storefront, an app can publish a listing in more than one language, and each localised listing only competes for searches in that language. A Catalan listing is ranked for Catalan queries, a Spanish listing for Spanish queries, and the two live side by side in the same country with their own positions. That is why the unit AppTracker tracks is store plus country plus language, not country alone.

Spain

one storefront

Spanish (es)

Catalan (ca)

#31

Spain is one storefront, but a Spanish listing and a Catalan listing are tracked separately. Each competes only for searches in its own language and ranks on its own, so the tracking unit is store plus country plus language.

It also matters because a localised listing only ranks for the terms it is actually translated for. If you have not localised, the store may serve a fallback language that competes for none of the local search terms, and a country-only view would never reveal it. Tracking per language is how you see whether each translation is actually pulling its weight.

A single global number hides everything useful

Suppose you did blend every market into one worldwide rank. The number would be meaningless. An app that is number 3 in its home market and 45th everywhere else would average out to something mediocre that describes neither reality. You would not see the markets you dominate, the ones where you are invisible, or where a competitor is quietly taking a region. Averages destroy exactly the information you need to act.

One keyword, the same app, every market

global avg

#12

#18

#24

#45

A single global rank around #19 would average all of this away, hiding the markets you win and the ones where you are invisible.

What tracking per market actually gives you

Once each country and language is tracked on its own, the data starts telling you where to spend effort:

Find your strong and weak markets for each keyword, instead of one blurred score.
See whether a translation is working, or whether a market is being served an untranslated fallback.
Spot a competitor dominating one region before it spreads, since the field differs per market.
Measure a localisation or listing change in the exact market you made it, not diluted across the world.

On AppTracker, every tracked keyword is pinned to a specific store, country, and language, and each one gets its own daily keyword snapshot of the top 20 apps, so your history is correct per market rather than averaged into a number that means nothing.