What ASO really covers
ASO is about maximizing two things: the number of times your app appears in the store's results, and the percentage of people who install it after seeing it. Everything else flows from these two objectives.
The common confusion is to reduce ASO to picking a few keywords. That is a framing error. Apple's and Google's algorithms also weigh behavioral signals: listing conversion rate, download speed, D7 retention, uninstall rate. A perfectly optimized title that generates installs quickly deleted ends up dropping in the rankings. ASO is therefore a discipline of visibility AND quality.
The parallel with web search is direct. If you already work your SEO agency on the organic channel, you find the same logic of search intent and conversion, transposed to a closed environment. The difference: on the stores, post-click engagement factors carry more weight than on Google, because the store measures the app's real usage.
The App Store and the Play Store are not handled the same way
Apple and Google run two distinct engines. Apple reads the title, the subtitle and a hidden 100-character keyword field, but ignores the description for ranking. Google, conversely, indexes the entire long description and weighs term frequency. A single listing duplicated across both platforms therefore leaves performance on the table everywhere.
The text field: title, keywords, description
Text is the ASO lever that weighs most on ranking. Each field has a precise role and a different weighting depending on the store.
The title (30 characters on both stores) concentrates the strongest algorithmic weight. Place the brand and the main keyword there. Apple's subtitle (30 characters) extends the title with a value promise and secondary keywords. Apple's keyword field is invisible but decisive: 100 characters, comma-separated terms, with no space and no duplicate with the title. Do not waste these characters on words already indexed elsewhere.
On the Google side, the short description (80 characters) serves as a converting hook, and the long description (4,000 characters) must naturally incorporate your target keywords. Google weighs density but penalizes stuffing: aim for readable text where the main term appears two to three times per useful paragraph.
| Text field | App Store (Apple) | Play Store (Google) |
|---|---|---|
| Title | 30 chars, maximum weight | 30 chars, maximum weight |
| Subtitle / short desc. | Subtitle 30 chars, indexed | Short desc. 80 chars, indexed |
| Hidden keyword field | 100 chars, decisive | Nonexistent |
| Long description | Not indexed for ranking | 4,000 chars, indexed and weighted |
Choosing the right keywords
Start from intent, not raw volume. A heavily searched but ultra-competitive keyword pays off less than a mid-tail expression where you can actually rank in the top 3. Cross three sources: the store's autocomplete suggestions, the keywords of direct competitors, and the real vocabulary of your users in the reviews. It is the same rigor of semantic analysis as for SEO on Amazon, where the algorithm rewards transactional relevance before popularity.
The visuals that convert
Visuals do not raise the rank directly, but they decide the listing conversion rate, which in turn influences ranking. A mediocre visual kills a perfectly indexed listing.
The icon is the first point of contact. It must remain legible at very small size, stand out in a grid of results and reflect the app's category without clutter. Test it on light and dark backgrounds, at the actual display size.
The screenshots carry most of the persuasion. The first two or three are seen without scrolling: they must state the value proposition, not show a settings menu. Add short benefit-oriented captions rather than raw screenshots of the interface. The preview video (up to 30 seconds) increases conversion when it demonstrates usage in a few seconds; it must convince without sound, because autoplay is muted.
Place the main value proposition on the first image visible without scrolling. It is the one that decides the install.
'Track your spending in 10 seconds' converts better than 'Analytics dashboard'.
Autoplay is muted. Every key message must come through in text and visual demonstration.
Check legibility in a grid of results on light and dark backgrounds, never in a large isolated format.
Localize, not just translate
A visual that performs in the United States does not necessarily perform in France or in Spain. Color codes, content examples and priority arguments vary by market. Localizing screenshots and captions, by store and by language, is an integral part of serious ASO. The same holds true for social platforms: a format that works elsewhere must be readapted, as observed with TikTok SEO where internal search rewards each audience's native codes.
Reviews, ratings and trust signals
Reviews are a direct ranking factor, not a mere ornament. The average rating and the volume of ratings rank among the most heavily weighted signals on both stores, and they also drive the conversion rate: few users install an app rated below 4.0.
Above 4.5 stars, a listing benefits from both a better rank and a higher conversion rate. Below 4.0, conversion collapses regardless of the work done on keywords.
Three levers move these signals upward. First, the timing of the prompt: ask for a rating after a moment of success in the app (a goal achieved, an action completed), never at launch or during a frustration. Second, freshness: stores value a steady flow of recent reviews rather than a large volume of old ones. Finally, replying to reviews, especially negative ones: replying publicly and solving a problem often raises the initial rating and sends a quality signal to the store as well as to future users.
Never fall into buying reviews. Both stores detect artificial patterns and penalize with a lasting demotion, or even removal. The only viable strategy is to earn reviews by reducing friction and prompting at the right moment.
Reducing uninstalls
The uninstall rate and short-term retention are silent but heavy signals. An app that installs quickly and is deleted just as quickly sends a bad message to the algorithm. Working on onboarding and perceived value in the first few minutes therefore indirectly improves your ASO.
Measure and iterate without fooling yourself
ASO is an iterative process, not a one-off setting. The queen metric is the listing conversion rate: the percentage of people who install after seeing it. It is what reveals whether your visuals and your text work.
Isolate two families of traffic in your consoles (App Store Connect and Google Play Console): keyword search and browse/navigation. A good rank on a keyword that does not convert signals a gap between the listing's promise and the search intent. Conversely, a strong conversion on a low-volume term justifies broadening the targeting around that semantic field.
Test one element at a time. The Play Store offers native A/B tests on visuals and texts: use them before any decision based on intuition. On the App Store, Product Page Optimization lets you compare variants of screenshots and icon. Without a controlled test, you attribute to your latest change variations that actually come from seasonality or an external campaign.
Aligning ASO with overall acquisition
ASO does not live in a silo. Paid traffic (Apple Search Ads, UAC) feeds the organic conversion signals, and conversely an optimized listing reduces the cost per install of your campaigns. Audit your app presence the way you would audit your organic and AI visibility: with a clear grid of levers and metrics. To assess where you stand on visibility, our AI Visibility Score gives a quantified starting point before launching a project.
We audit your ASO presence and your AI visibility to identify the priority levers. Free GEO audit, no commitment.
Questions fréquentes
What is the difference between ASO and SEO?+
SEO optimizes a website's visibility in web search engines like Google. ASO optimizes an app's visibility in app stores like the App Store and the Play Store. The two disciplines share the logic of keywords and conversion, but ASO adds mobile-specific signals: average rating, review volume, app size and uninstall rate.
How many keywords can you target on the App Store?+
Apple offers a hidden 100-character keyword field, invisible to the user but read by the algorithm. You place comma-separated terms in it, with no spaces and no repetition of words already present in the title or subtitle. Filled in well, this field covers around thirty usable keywords.
Do reviews influence an app's ranking?+
Yes, strongly. The average rating and the review volume rank among the main ranking factors on both stores. A rating above 4.5 improves both the rank and the listing conversion rate. Replying to reviews and prompting for ratings at the right moment in the user experience moves these signals upward.
Do you need a different strategy for the App Store and the Play Store?+
Yes. Apple indexes a dedicated keyword field and ignores the description for ranking. Google, by contrast, reads the entire long description and weighs term density. You must therefore write two distinct listings: concise and structured by field on the Apple side, rich and naturally optimized on the Google side.
