App store optimization (ASO): getting your app discovered

In short: App store optimization (ASO) is the work of making your store listing show up in search and convince visitors to install. Three things matter most: the right search terms in your title and metadata, screenshots that show the benefit within seconds, and good ratings. Apple and Google read different fields, so each platform needs its own approach.

How app store search works

Many installs start with a search inside the store. If your app does not appear there, a lot of users will never see it, however good it is. Both stores weigh two things: whether your app matches the search term (relevance) and how well users respond to it (downloads, ratings, retention).

Apple App Store

On the App Store, the fields that count are the app name (up to 30 characters), the subtitle (up to 30 characters) and the hidden keyword field of 100 characters. Apple does not use the long description for search ranking, though it still matters for people who are already on your page. In the keyword field, separate terms with commas and no spaces, and do not repeat words that already appear in the name.

Google Play

Google Play has no keyword field. Google reads the title (30 characters), the short description (80 characters) and the full description (up to 4,000 characters). A readable text that uses your important terms naturally works best. Keyword stuffing breaks the store policies and puts readers off.

Finding the right keywords

Start with the words your audience uses when looking for a solution. That is rarely your brand name. A field service app gets found through terms like "timesheet", "site report" or "job photos", hardly ever through its product name.

Good sources are customer conversations, support tickets, the autocomplete in store search and your competitors' listings. Dedicated ASO tools estimate search volume and competition. To begin with, a well-maintained list that you review every few months is often enough.

If you target Germany, write a real German listing. Literal translations of English keywords miss how Germans search, which often involves compound words or different terms altogether.

The store page: from visitor to install

Visibility alone does not bring installs. Most visitors decide based on the first screenshots and never read the description.

Screenshots and preview video

Use the first image for your main benefit, with a short headline in large type. Each following screenshot explains one feature. Screens without context, such as an empty login form, waste space. A short preview video can show complex flows, but it should make sense with the sound off.

Icon and name

The icon has to stand out in a search list next to other apps. A simple motif with clear contrast usually beats a detailed logo. The name should carry the brand and, where it fits, the most important search term.

Test instead of guessing

Both stores have built-in testing. Apple calls it Product Page Optimization, Google Play calls it store listing experiments. You can run different icons or screenshots against each other and see which version gets more installs. Apple also lets you create custom product pages for individual campaigns.

Ratings and quality

Ratings affect both ranking and the install decision. Ask for a rating at a good moment, for example right after the user has completed a task. Use the official APIs: StoreKit's requestReview on iOS, which the system shows at most three times a year, and the In-App Review API on Android.

Reply to critical reviews calmly and quickly. People who see that a problem was taken seriously and fixed are more willing to install. Technical quality counts too: crashes, slow start-up and battery drain lead to poor ratings, and on Google Play they affect visibility directly. How to keep users after the install is covered in our post on mobile UX patterns that convert. Push notifications users actually want also help with retention, as long as you use them sparingly.

Frequently asked questions (FAQ)

How long does it take for ASO changes to work?

New metadata goes live with your next update or after store review. Ranking changes usually show within a few weeks. Leave enough time between changes so you can tell which one had an effect.

Do I need separate texts for iOS and Android?

Yes. Apple uses the keyword field and ignores the description for search, while Google reads the description and has no keyword field. The message can stay the same, but write the texts separately for each platform.

Does the app's technology matter for ASO?

It does. Stability, load time and app size shape your ratings, and on Google Play they also affect placement. Whether you build natively or cross-platform matters less than a clean implementation. Our comparison of React Native vs. Flutter goes into the trade-offs.

Is paid advertising in the stores worth it?

Apple Search Ads and Google App Campaigns can speed up a launch and show which search terms actually lead to installs. You can then use that knowledge for organic optimization. A weak store page makes advertising expensive, so optimize the page first.

Conclusion

ASO is ongoing maintenance: review keywords, test screenshots, answer reviews. The biggest gains usually come from the first two screenshots and a title that contains the term your audience searches for. If you are planning an app that should convince people right in the store, talk to us about mobile app development for iOS and Android.