App Store Optimization (ASO) a complete guide for iOS and Google Play

App Store Optimization (ASO) is the work of making your app easier to find in App Store and Google Play search, and more likely to be installed once people see it. It has two halves: ranking, which depends on your app name, keywords and ratings, and conversion, which depends on your icon, screenshots and description.

Why ASO matters for creators and publishers

For a podcast, magazine or course business, most installs come from your own audience: your website, newsletter and social posts. ASO doesn't replace that. It makes sure that people who search for your app find it straight away, and that the listing convinces them to install. It also brings in people who search for your topic but don't know you yet. As more creators launch their own apps, a vague listing is easy to overlook.

App Store and Google Play listing fields compared

The biggest difference is that iOS has a hidden keyword field and Google Play does not.

FieldApp Store (iOS)Google Play
App nameUp to 30 charactersUp to 30 characters
Second lineSubtitle, up to 30 charactersShort description, up to 80 characters
KeywordsHidden keyword field, 100 characters, comma-separatedNo keyword field
Promotional textUp to 170 characters, editable without a new version, no effect on search rankingNo equivalent
Long descriptionUp to 4,000 charactersFull description, up to 4,000 characters
ScreenshotsUp to 10Up to 8 per device type, at least 2 to publish
VideoUp to 3 app previews, up to 30 seconds eachOne YouTube preview video
A/B testingProduct page optimizationStore listing experiments

Sources: Apple's product page guide and App Store Connect reference, which counts the keyword limit in bytes, so non-Latin languages fit fewer words. For Google Play, the store listing best practices and preview asset requirements.

How to choose ASO keywords

  1. List the words your audience uses. Your brand, your show or author name, the topic and the format, such as podcast, audiobook or course.
  2. Put the most important words in the name and second line. That is the app name and subtitle on iOS, and the title and short description on Google Play. Keep the name readable.
  3. Fill the iOS keyword field with other words. Use commas and no spaces. Apple advises against repeating words from your name, subtitle or category, adding plurals, or using the word "app". Never use competitor or trademarked names, which Apple names as a common reason for rejection.
  4. Write Google Play descriptions in plain language. Google asks for "everyday language, not a list of keywords", and treats repetitive word lists as a policy violation.
  5. Localize for each market. Apple lets you translate the app name and tailor keywords for each language.

Paid ASO tools such as AppTweak and Sensor Tower estimate search volume and show which keywords competing apps rank for. For a small content app, the free data in App Store Connect and Play Console is usually enough to start.

ASO ranking factors you can influence

Apple says its search results are based on text relevance (title, subtitle, keywords and primary category) and user behavior (downloads, ratings and reviews). Neither Apple nor Google publishes how these are weighted.

You can work on ratings directly. You can ask for a rating with Apple's built-in prompt up to three times in a 365-day period, so ask at a good moment, for example after someone finishes an episode, not on first launch.

Screenshots do much of the selling, because Apple shows them directly in search results. The first two or three should show your real content and what people get, not just a logo.

How to measure ASO

Apple's App Analytics shows impressions, downloads and conversion rate, broken down by source such as App Store Search. Play Console has similar store listing reports. Change one thing at a time, wait a few weeks and compare. For icons and screenshots, use Apple's product page optimization or Google's store listing experiments.

ASO for subscription apps built with Audiorista

With Audiorista, your app is published under your own name in your own Apple and Google Play developer accounts, so you own the listing. You write the name, subtitle, keywords, description and screenshots, and you can change them whenever you like. Audiorista builds and uploads the app, you submit it, and we help if Apple rejects it. See how to get an app on the App Store and our iPhone app builder guide for the steps.

If you sell subscriptions, make clear what is free and what is paid, and follow Apple's advice to keep specific prices out of the description. Our explainer on in-app purchases covers how subscriptions appear in the store. Audiorista does not do keyword research or ASO for you, but the steps above are enough to start.

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FAQ

What is ASO (app store optimization)?

ASO is the process of improving an app's store listing so it ranks higher in App Store and Google Play search and turns more visitors into installs.

What is the difference between SEO and ASO?

SEO helps a website rank in search engines like Google. ASO helps an app rank inside the app stores, and the goal is an install rather than a page visit.

What are the main ASO ranking factors?

Apple names text relevance (title, subtitle, keywords, category) and user behavior (downloads, ratings, reviews). Neither store publishes exact weights.

How can I learn ASO? Do I need a course?

Start with Apple's product page and search guides and Google's store listing best practices, which are free. A paid course or tool helps once you manage several apps or a crowded category.

How do you measure app store optimization?

Track impressions, conversion rate and downloads from search in App Store Connect and Play Console, and change one element at a time.

Want your own branded content app on the App Store and Google Play? See how Audiorista works.

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