App Store Optimization (ASO) Guide: How to Rank Higher and Get More Downloads

Millions of apps compete for attention in the app stores, and most downloads still start with a search. App Store Optimization (ASO) is how you show up in those searches without paying for ads. It is one of the best growth channels an app can have, but it is also harder than ever, because new apps launch every day. This guide combines proven ASO frameworks, keyword research methods, Google Play tactics and a real live makeover into one practical plan you can follow for your own app.

What ASO is and why it matters

ASO is simply SEO for the app stores. Instead of ranking a website on Google, you optimize your app’s listing so it ranks higher when people search the App Store or Google Play, and so more of those people tap Download.

The biggest benefit is consistency. Paid ads stop delivering the moment you stop paying, but organic rankings keep sending users day after day. Ad costs also keep rising, which is why many developers with small budgets turn to ASO first. If your app ranks well, it generates a steady supply of new users for the life of the app, or at least until the next algorithm change or until someone takes your spot.

Be realistic about the timing, though. ASO is not an overnight trick. Depending on the category and keyword competition, expect roughly one to three months before results show, and be wary of anyone promising rankings in a few days.

The ranking factors that matter most

Nobody outside the stores knows the exact algorithms, so the list below is based on practitioners’ experience rather than official documentation. Treat it as a priority guide.

Keyword research that actually works

Finding the right keyword is the most important part of ASO if you are new. A good keyword can change an app’s fate. One example from the field: an app launched with just two carefully chosen keywords, reached number one for both very quickly, and generated around 150 organic downloads a day. It made $1,600 in sales in its first 22 days, entirely free, because the keywords were ones many people were ignoring. Another app sat doing almost nothing for years until a single title change, based on two newly found keywords, took it to number one for both and finally made it profitable.

A simple keyword selection method

1. Brainstorm and collect a long list of keywords relevant to your app. A real case study started with over 600 candidates and narrowed them to the best 200.
2. Filter ruthlessly: mark what is relevant, what has traffic, and what has low difficulty. Relevant keywords with no traffic can still be worth targeting.
3. Pick about 6 to 10 focus keywords. Roughly this many fit across your title and subtitle in two localizations (see the iOS section).
4. Aim for keywords with a search score of at least about 30 if you can find them. Two keywords at that level were enough to reach around 100 downloads a day in one example.
5. Ideal keywords are low difficulty with high traffic, but those are very hard to find. The next best are low difficulty with some traffic.

What to avoid

• Competitor and brand keywords. They generally don’t work for ASO. If someone searches a brand name, they tap the brand’s own listing. You can target competitor terms with Apple Ads instead.
• Chasing only huge keywords when you have no paid channel. Start with longer-tail keywords.

When high-traffic keywords are out of reach

If the strategy above doesn’t work, try the quantity game: rank for many keywords with very low search scores (around 5 to 20). Each is less competitive, but you need a lot of them ranking well. One client with 92 number-one keywords, all with a score of 5, made roughly $2,000 to $3,000 a month, which is a respectable result if you rely on ASO alone. To scale further you generally need paid ads. If you are under about $10,000 in monthly recurring revenue, Apple Ads is a cheap place to start because all you need is keywords.

Be careful with keyword tools

Tools like Astro, AppFigures, Sensor Tower, MobileAction and AppRadar calculate keyword popularity and difficulty, but Apple does not publish real search volume. The tools rely on Apple Ads data, which reflects how many advertisers bid on a keyword, not the keyword’s actual traffic. That makes them a good proxy, not the truth. Apple Ads reported incorrect keyword popularity data for a period in 2025, which temporarily broke the numbers in several tools. Also, scores differ between tools, so using two tools and comparing is wise: if both agree, you can trust the signal more.

How to validate a keyword before committing

Because tool data is only a proxy, add two simple checks before you rebuild your listing around a keyword.

Check 1: How many apps target the exact phrase, and how many reviews do they have?

In your ASO tool, look at the apps ranking for the keyword. In one example, a keyword reported popularity 26 and difficulty 85, yet only two apps targeted the exact phrase. That looked promising. But the review counts (58,000 and 19,000) showed big, established players, and both were really targeting a different phrase. Few competitors plus large reviews means you need to dig deeper before deciding.

Check 2: Run a small Apple Ads test

Set up an exact-match keyword campaign with a high maximum bid so your ad actually appears, then watch two numbers:

• Impressions: roughly how many people search the keyword.
• Tap-through rate: how many of those who saw it tapped.

In the example, only 151 people saw the ad in a week, compared with more than 12,000 impressions on another campaign. The test cost under $73 and revealed the keyword had little traffic, saving about six months of waiting for a ranking that would have disappointed.

iOS: title, subtitle, keywords and localizations

How much each field counts

The title carries the most weight, the subtitle the second most, and then the keywords field. Within the keywords field, terms placed further left tend to carry a bit more weight. You don’t strictly need words like “app” or “free”, since Apple auto-indexes some terms, but adding them can occasionally help for phrases such as “symptom tracker free”.

The localization trick

The US App Store indexes several additional localizations beyond US English, including Spanish (Mexico). That means you can put English keywords in the Spanish (Mexico) title, subtitle and keywords, and they can still help your US rankings. Apple publishes which storefronts overlap, and Canada and the UK have overlapping localizations too. In practice, you balance your target keywords across the US and Spanish (Mexico) fields.

Practitioners also report that repeating your main focus keyword (for example, the one in the US subtitle) in the other localization’s title can increase rankings, since it acts like a second entry into the ranking lottery. They note Spanish (Mexico) tends to carry more weight than the other overlapping localizations. Treat this as an experiment to test with your own app, not a guarantee.

A tip for a post-update push

After an ASO update, some developers briefly run a free lifetime offer for a couple of days and promote it on communities or Reddit, creating a burst of downloads. The idea is that download velocity gives the new keywords a push. This is optional and debated, so test carefully.

Real example: an ASO makeover step by step

A live case study shows how these ideas combine. The app was a small symptom and sick-day tracker, a “painkiller” type of app, meaning users have a pressing need they want to solve. The team researched more than 200 keywords using two tools and compared the data. They then:

1. Filtered the keywords by relevance, traffic and difficulty, marking keywords that did not fit.
2. Compared two ranking candidates for the title: “symptom tracker” and “headache tracker”. Looking at the actual search results showed that few apps had the “headache” keyword in the top results and the leaders had few ratings, so the headache keyword looked easier to win.
3. Moved “headache” into the title and “symptom” into the subtitle. The title has the most weight, so the best opportunity goes there.
4. Kept the app’s existing number-one phrase (“sick days”) alive in the Spanish (Mexico) title, so the ranking they already had was not lost, and repeated the focus keyword across both localizations.
5. Chose a set of about 11 focus keywords and treated them as plan A, B, C and D. Be aggressive in the first round with the highest-traffic keywords. If the algorithm doesn’t favor them, adjust in rounds two and three using the data.
6. Noted that a keyword like “chronic illness” has low difficulty, decent traffic and fits the painkiller idea, so it was a strong addition.

Align screenshots with your main keyword

If someone searches “headache tracker”, they expect to see a headache tracker. So the main keyword should appear in the first couple of screenshots. Keep the text bold, short (three to five words) and to the point, and study successful apps in the same niche for inspiration, then adapt rather than copy.

Google Play: 10 strategies

Google Play works differently from iOS, so here are ten strategies from a developer with over a decade of experience.

1. Localization. Only about 20% of people speak English. If you don’t localize, you are missing out on most of the audience, because people search in their native language. Translate your keywords in your metadata.
2. App updates. If you stop updating, you may notice new users dropping because visibility is reduced. Updating at least once a month is suggested to maintain ranking.
3. Full description. This is your biggest chance to place keywords. Research and rank keywords by popularity and difficulty first, then write the description, then check keyword density and mention your top keywords several times (at least five times was the recommendation). Keep it readable, not stuffed.
4. Short description. Users read this right below the title, so it must make sense. Keyword stuffing may lift ranking but will hurt conversion, and a falling conversion rate tells Google your app isn’t good, which pushes you down.
5. App title. This has the highest priority for keyword ranking. Google Play allows 30 characters, so include only your top keywords. Put extra keywords in other localizations.
6. Reviews. You can’t control what people write, but you can control your replies. Users who leave one or two stars are often very angry, and a good reply can turn them into four or five stars. Also note that Google added a filter letting users hide apps under four stars, so a low rating can keep you out of view.
7. Package name. Usually your domain reversed (for example, com.yourcompany.appname). Google reportedly uses it for keyword ranking, so including relevant keywords can help. It is hard to change later, so decide before you create the project.
8. Developer name. Also considered in keyword ranking. Works best if you have one app, and is hard to use if you have several.
9. Android vitals. Google wants to show apps that work. Crashes and app hangs hurt ranking, so use a crash reporting tool such as Crashlytics and roll updates out gradually, so you can catch problems before everyone gets them.
10. Category and tags. Category doesn’t affect ranking directly, but users browse by category, so pick the correct one (some are easier to rank in). Google Play also lets you add up to five tags to help the algorithm understand your app. Some tags show under your title, so you don’t need to spend title characters on them (for example, “offline”).

How to write a Google Play listing that ranks

A live Play Store walkthrough adds practical rules for the actual writing.

Never copy a competitor’s listing

Some people search their category, then copy the top app’s title, keywords and description. This doesn’t work. Google can tell which app is the original, and a copied listing with few downloads looks like spam. Instead, study competitors to understand the keywords, then write your own.

Title: target two or three keywords, long-tail

Your title has 30 characters, so there is no room for waste. Instead of a short, generic title for a crowded keyword (for example, a plain “PDF Reader”), use a longer, more specific title that targets several related keywords such as “PDF reader”, “PDF viewer” and “PDF editor”. People search in different ways, so covering variations helps you appear in more searches. Don’t compromise on using the full 30 characters.

Short description: simple and clear

Explain your app in one plain sentence that tells Google (and the user) what it is and what it does, for example: a fast PDF reader to view, edit and manage all your documents. The easier it is to understand, the faster Google can match you with keywords. The limit is 80 characters.

Long description: three simple paragraphs

1. What your app is. Start with your main keywords in a clear opening sentence, like a heading.
2. What it does. List features and how users can use them, including whether it works offline.
3. Why choose it. Explain why your app is worth installing, who it is for, and end with a call to install.

• Length: you don’t need to use all 4,000 characters. Around 1,200 to 1,500 characters is enough and keeps your targeting clear. Filling the limit with repeated words is spam and makes it harder for Google to see what you target.
• Language: write the description in English, since English keywords tend to rank faster. If you’re not comfortable in English, a translation tool can help.
• AI-written text: it is fine as a helper, but AI tends to add awkward, spammy keyword usage. Write it yourself or edit carefully.

Don’t keep changing your listing

If you update the title and description every few days or weeks, Google gets confused about what you want to rank for. Make the changes, then give it time. Keywords usually take around 15 to 20 days to be indexed, and ranking takes about a month or more.

Brand names

A brand name alone has no search volume if nobody knows it. If you use your brand in the title, you lose characters for keywords. A common approach is to use keyword-rich titles for ranking, and if you can’t compromise on the brand name, support it with paid ads so people learn it.

Conversion and monetization tips

Ranking gets people to your listing. Conversion and revenue decide whether it was worth it.

• Icon and screenshots are your first impression. If they are weak, Google won’t rank you well because few people tap. A/B test them to improve the conversion rate.
• Pricing: for ongoing-use apps (like health trackers), a yearly plan with a free trial usually fits better than weekly plans, which suit one-time-use apps. You can often charge more than you think.
• Paid intro offers can work, for example a low-priced first month and then the yearly plan.
• Flexible paywalls: onboarding doesn’t have to be linear. A user who is sick right now is more motivated, so a hard paywall may fit, while others might get a longer free trial if they dismiss the offer.
• Apple Health integration: for health apps, integrating with Apple Health can be a source of downloads, and some apps were recommended there. In one tested case, asking for the integration after the paywall converted better. For photo apps, asking for photo access before the paywall helped. Test for your category.
• Explain widgets visually: not every user knows how to add a widget. A short video in onboarding works better than text.
• Be specific about benefits: “Upgrade to Pro” gives no reason. Show what users unlock, like understanding their triggers, unlimited tracking or deeper stats.

Your ASO action plan

1. Collect a long list of relevant keywords and compare data from at least two tools.
2. Filter by relevance, traffic and difficulty, then choose 6 to 10 focus keywords with backups.
3. Validate them by checking competing apps and their review counts, and run a small Apple Ads test if your app is live.
4. Put the best keywords in the title and subtitle (iOS), spread across the US and Spanish (Mexico) localizations, and use the keywords field for the rest.
5. On Google Play, write a long-tail 30-character title, a clear short description and a three-paragraph description of around 1,200 to 1,500 characters.
6. Align your first screenshots with your main keyword.
7. Keep the app stable, respond to reviews and update regularly.
8. Wait. Give each change time, then review the data and adjust in rounds.

Common mistakes and gotchas

Frequently asked questions

Conclusion

ASO rewards patience, research and clarity. Choose your keywords with data from more than one source, validate them before betting your title on them, place the strongest ones where the stores give the most weight, and write listings that are clear to both people and algorithms. Keep your app stable, answer your reviews and test your screenshots.

Don’t expect overnight results and don’t copy someone else’s listing. Make a change, give it time, read the numbers and improve in rounds. Do that consistently and your app can earn a steady stream of free downloads long after any ad campaign would have stopped.