Keyword difficulty
Keyword difficulty is a 0–100 score that estimates how hard it is to break into the top search results for a given keyword on the App Store or Google Play. It is the counterweight to search volume: a high-volume keyword you can’t realistically rank for is worth less than a medium-volume keyword you can win. The number is an estimate of competitive pressure, not a guarantee — it tells you where the easy wins and the long, uphill fights are.
- Keyword difficulty is a 0–100 estimate of how hard it is to rank in the top results for a keyword — driven mainly by the strength of the apps already ranking.
- The biggest single factor is the rating count and quality of the top results; an app with hundreds of thousands of reviews is very hard to displace.
- Difficulty changes over time because it’s computed from the current competitors — re-check it rather than treating it as fixed.
- For a new app, lower-difficulty long-tail terms are the realistic, winnable targets; graduate to head terms as you build rating volume.
- Evaluate difficulty per store — the App Store and Google Play rank with different signals and different competitors.
What drives keyword difficulty
Difficulty is dominated by the strength of the apps that already rank for the term. The biggest single factor is the rating count and rating quality of the top results — an app with hundreds of thousands of reviews is extremely hard to displace, because rating strength is one of the strongest ranking and conversion signals on both stores. Secondary factors include how directly those apps use the keyword in their title and subtitle, how long they have been established, whether they appear in the category top charts, and how many apps are crowded around the term.
Because difficulty is computed from the competitors actually ranking, it changes as the field changes: a term gets easier when a strong incumbent slips, and harder when a well-funded app moves in. That’s why difficulty should be re-checked over time, not treated as a fixed property of a keyword.
How to use difficulty when picking keywords
Pair difficulty with volume and relevance. For a new or small app, the winning strategy is usually to target specific, lower-difficulty long-tail terms that describe exactly what the app does — they convert better because intent is sharper, and they are realistically rankable. As the app builds rating volume and authority, you can graduate to higher-difficulty head terms.
A practical rule of thumb: never judge a keyword on volume alone. A high-volume head term with very high difficulty is often a trap for a small app — you will sit on page three forever — while a cluster of lower-difficulty, high-relevance terms can deliver more total qualified installs.
Frequently asked questions
What is a good keyword difficulty score?
There is no universal threshold — it depends on your app’s strength. For a new or small app, lower-difficulty long-tail keywords are the realistic targets; high-difficulty head terms usually require a large existing rating base before they’re winnable.
Is keyword difficulty the same on the App Store and Google Play?
No. The two stores rank apps with different signals and different competitors rank for the same term, so a keyword can be much harder on one store than the other. Always evaluate difficulty per store.
Does keyword difficulty change over time?
Yes. Difficulty is computed from the apps currently ranking, so it shifts as competitors gain or lose rating volume, change their metadata, or enter and exit the term. Re-check difficulty periodically rather than treating it as fixed.
Put this into practice.
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