In 2025 the Apple App Store generated roughly $117 billion in consumer spend on about 37 billion downloads, while Google Play earned around $49 billion on 136 billion downloads (Business of Apps, App Data Report 2026). Same apps, opposite economics — and opposite optimization rules. Most teams write one listing, paste it into both stores, and quietly underperform on at least one.
That happens because Apple and Google don't just look different — they rank apps with different engines, index different fields, and reward different behavior. This is the field-by-field map of where they diverge, and what you should do differently for each.
Key Takeaways
- The App Store indexes only three fields — app name, a 30-character subtitle, and a hidden 100-character keyword field — and ignores your description for ranking.
- Google Play has no keyword field; it full-text-indexes your title, short description, 4,000-character long description, and even reviews (AppsFlyer, 2026).
- Think precision (Apple) vs. coverage (Google): one rewards restraint, the other rewards natural keyword density.
- Backlinks and Android Vitals move Google rankings; the App Store uses neither.
How do the two stores actually rank apps?
The App Store and Google Play rank apps with fundamentally different engines. Apple uses explicit, opt-in keyword targeting and reviews each submission manually in one to three days. Google Play runs an automated, full-text search model that indexes every word in your listing — and your reviews — and approves most apps within hours (AppTweak, 2026).
That split runs deep. Apple's algorithm does not crawl your description for search terms; you have to declare the keywords you want to rank for. Google's does the opposite — it reads your whole listing, applies natural-language analysis to understand how words relate, and even factors in the language of your reviews (App Radar, 2026).
The practical takeaway: on iOS you are curating a short, deliberate set of terms; on Android you are writing naturally for a search engine that reads everything. One ASO playbook can't serve both. If you're optimizing for Apple specifically, our breakdown of every App Store ranking factor, ranked covers how the keyword field, screenshot captions, ratings, and retention stack up.
Which metadata fields are indexed — and how long can they be?
Apple indexes just three text fields: the app name (30 characters), the subtitle (30 characters), and a hidden keyword field (100 characters). Google Play indexes your title (30 characters), short description (80 characters), and the full 4,000-character long description (AppsFlyer, 2026). Apple ignores the description for ranking entirely; Google reads all of it.
Add those limits up and the asymmetry is stark. The App Store gives you about 160 characters of indexed text to work with. Google Play gives you more than 4,000 — a different surface area by an order of magnitude. On iOS, every character competes; on Android, you have room to cover dozens of related queries in one description.
Total text each store indexes for search
The App Store gives you roughly 160 indexed characters; Google Play gives you over 4,000 (AppsFlyer, 2026). That gap is the root of nearly every other difference in this guide — Apple forces precision, Google rewards coverage. Getting the most out of those 30-character titles on either store is its own discipline; our breakdown of how to spend your 30-character app title covers the keyword-vs-brand call in detail.
Do keywords belong in the description or a separate field?
On the App Store, keywords belong in the hidden 100-character field, never the description — Apple doesn't crawl description copy for ranking. On Google Play there is no keyword field, so the description is your keyword surface: aim for natural 2–3% density on priority terms across the 4,000 characters (MobileAction, 2025). Google even indexes review text.
For Apple's keyword field, efficiency is everything. Separate terms with commas and no spaces, skip plurals and stop words the algorithm infers on its own, and never repeat your app name or terms already in the title — the indexer credits a word once it appears in any indexed field. Every wasted character is a query you forfeit.
For Google, write for humans first. Its language model understands relationships between words, so keyword stuffing reads as spam and natural phrasing ranks better. Cover your primary term, its close variants, and the problems your app solves — then let the description do the work the keyword field does on iOS.
Hold one mental model and most decisions get easier: Apple rewards precision, Google rewards coverage. On iOS you opt into a tight set of terms and keep the description as pure conversion copy. On Android the description is a wide net — the more naturally you cover relevant language, the more queries you surface for. When a tactic works on one store and flops on the other, this is almost always why.
How do visual assets and their specs differ?
The App Store allows up to 10 screenshots — the first three appear directly in search results — plus three app preview videos (15–30 seconds) whose first entry auto-plays in search. Google Play allows up to eight screenshots, shown mainly on the product page, and a single YouTube-hosted promo video (AppTweak, 2026).
Where those assets surface changes how you design them. Because Apple shows your first three screenshots and auto-plays your video in the search feed itself, the opening frames have to sell the app before anyone taps through — they're effectively ad creative. On Google Play, screenshots mostly appear once a user is already on your listing, so they work harder at converting an interested visitor than at stopping a scroll.
The video difference matters too: Apple hosts native app previews that play silently and instantly, while Google routes through a YouTube embed that demands a stronger thumbnail and a tighter hook. Tuning these frames is conversion-rate work, which is how we approach store conversion optimization for every client — see the full app conversion rate playbook for the lever-by-lever detail.
How does A/B testing work on each store?
Google Play offers native, randomized store-listing experiments that split live traffic and report a winner. Apple's Product Page Optimization tests up to three variants, while Custom Product Pages (CPPs) personalize the listing rather than run a true random test. Apple now allows up to 70 CPPs per app and, since July 2025, lets them surface in organic search (AppTweak, 2026; Adjust, 2025).
What you can vary differs sharply. Apple's Custom Product Pages let you swap only screenshots, app preview videos, and promotional text — the core listing stays fixed. Google's custom store listings go further, letting you change the app title, icon, short description, long description, screenshots, and video, with up to 50 distinct versions targeted by audience, country, or install state (Phiture, 2025).
So Google gives you a genuine experimentation engine across the whole listing, while Apple gives you personalization plus a narrower PPO test. Plan iOS tests around the assets you can actually vary — and remember CPPs double as Apple Search Ads landing pages, not just organic experiments.
What off-listing signals move rankings?
Google Play counts signals that live outside your listing copy. Backlinks from trusted sites feed ranking, and so does technical health via Android Vitals — crash rate, ANR (app-not-responding) rate, battery drain, and startup time. The App Store uses neither backlinks nor Android-style vitals, leaning instead on conversion rate and download velocity (App Radar, 2026).
This gives Android ASO a technical-SEO flavor that iOS lacks. On Google Play, a crash-prone build or a slow cold start can suppress rankings no matter how clean your metadata is, and earning links from reputable sites is a legitimate growth lever. On the App Store, those same factors barely register for search — what moves the needle is how many people who see your listing actually install.
The lesson: on Android, your engineering team is part of your ASO team. On iOS, your conversion creative is. If you're optimizing for Google specifically, our breakdown of every Google Play ranking factor, ranked covers how these off-listing signals stack up against metadata and reviews.
Where do the economics and featuring differ?
Google Play wins on scale while the App Store wins on money. In 2025 Google Play drove about 136 billion downloads to the App Store's 37 billion, yet the App Store earned roughly $117 billion in consumer spend versus Google Play's ~$49 billion (Business of Apps, 2026; ASOMobile, 2025). Roughly four in five downloads happen on Android, but the typical iOS user spends far more.
Share of 2025 app downloads
Commissions and featuring diverge too. Apple charges 30% standard, dropping to 15% for developers under $1M a year via its Small Business Program; Google charges 15% on the first $1M of annual revenue, then 30% above it (AppTweak, 2026). Featuring works differently as well: Apple's is editorial, curated by a human team, while Google's placements are largely algorithm-driven. That means polish, quality, and a strong story court Apple's editors, while consistent metrics court Google's algorithm. If the App Store side is your priority, our guide to how to actually get featured on the App Store breaks down the seven criteria editors score and how to submit a nomination.
The most common mistake we see is a single description copied across both stores. On iOS it doesn't matter for ranking — but on Android that same copy is the entire keyword engine, and an un-optimized one leaves a long tail of queries on the table. The first thing we split for a new dual-platform client is almost always the Google Play long description, written for natural density, separate from a tight, comma-packed iOS keyword field.
Frequently asked questions
Does Google Play have a keyword field like the App Store?
No. The App Store has a hidden 100-character keyword field, but Google Play has none. Google instead indexes the words in your title, short description, 4,000-character long description, and even your user reviews (AppsFlyer, 2026), ranking you on natural language rather than a dedicated slot.
Does the App Store read my description for keywords?
No. Apple doesn't use the long description as a ranking factor, so it never crawls that copy for keywords. Your search terms must live in the app name, the 30-character subtitle, and the hidden 100-character keyword field. On iOS, the description's only job is conversion.
Can I use the same listing on both stores?
You can, but you'll underperform on at least one. The indexed fields, character limits, and ranking models differ enough that copy tuned for Apple's keyword field wastes Google's 4,000-character description, and vice versa. Split your keyword strategy and your descriptions at minimum.
How many screenshots should I prepare for each store?
Prepare up to 10 for the App Store, where the first three show in search results, and up to 8 for Google Play, which displays them mainly on the product page (AppTweak, 2026). Design the first frames to communicate value at a glance, especially on iOS.
Which store is better for organic ASO?
Neither universally. Google Play offers more indexable text, native A/B testing, and backlink signals; the App Store concentrates ranking into a few high-weight fields and converts at higher revenue per install. The winning move is to optimize each store to its own rules.
The bottom line
One app, two stores, two different games. The App Store rewards precision — a few high-weight fields, a hidden keyword list, and creative that sells in the search feed. Google Play rewards coverage — a full-text description, backlinks, technical health, and native experimentation. Treat them as one and you leave rankings on the table somewhere. The practical splits:
- Write a tight, comma-packed keyword field for iOS; write a natural, 2–3% density long description for Android.
- Design Apple's first three screenshots as ad creative; design Google's to convert an on-listing visitor.
- Mind backlinks and Android Vitals on Google; mind conversion rate and velocity on Apple.
