An iOS or Android app does not improve your Google search rankings. Google said so explicitly in May 2025. Deep links, the technology that lets app content surface in search results, "don't change how Google Search shows your content," per Google's own Search Central documentation. Firebase App Indexing, the only mechanism that ever connected apps to web SEO, shut down on August 25, 2025. The mechanism is gone.
Firebase Is Dead. Start There.
In 2015, Google launched Firebase App Indexing. The premise: Google could crawl app content and surface it in web search results, letting app content appear in Google Search results. For a few years, it was the only SEO argument for building an app.
It's gone. Google deprecated Firebase App Indexing starting in 2021 and shut down Firebase Dynamic Links, the deep-linking infrastructure underpinning it, on August 25, 2025. Any SEO guide still recommending it is four years out of date.
A Short Life: The Firebase Timeline
Firebase App Indexing: Birth to Burial
2015: Google launches Firebase App Indexing. Apps could surface alongside web pages in Google Search.
2021: Google begins deprecating Firebase App Indexing. Adoption was always limited; most developers never implemented it.
May 2025: Google Search Central updates its deep links documentation. The finding: deep links "don't change how Google Search shows your content."
August 25, 2025: Firebase Dynamic Links shuts down permanently. The infrastructure is gone. No path back.
Sources: Google Search Central (May 2025), Freelance SEO SG (2026)
What Google Actually Said in May 2025
Google's Search Central blog (May 2025): deep links let app content open inside an app when a user clicks a search result, but only if they already have the app installed. The documentation is explicit: "this doesn't change how Google Search shows your content; Search continues to use the content of your web pages for indexing and ranking."
Google Ads documentation adds a second confirmation: "app content will not affect your Search rankings."
Two separate official sources. Same answer. The mobile website is what Google indexes.
Three Ways an App Can Touch SEO
The direct path is closed. Three indirect effects exist. None are proven in controlled tests.
- Brand search volume. A well-known app drives users to search for your brand name on Google. Branded search is a recognized ranking signal. If your app reaches genuine scale, that brand lift can translate to improved performance on branded queries. Not because of the app. Because of the recognition it builds.
- Credibility for quality evaluators. Google's quality evaluators look at whether a brand has a credible presence across the web. A highly rated app in the App Store or Google Play adds to that picture. Google has not confirmed it as a ranking factor. Quality evaluators look at your full web presence, app store rating included.
- Return visitor behavior. An app can keep users returning to your brand's ecosystem. Return visitors who later search for your site or click your results could affect behavioral signals. No Google documentation confirms this as a ranking factor.
Where to Put the Time Instead
If you are building an app hoping it will lift your Google rankings, work on the mobile website instead. Since 2023, Google uses mobile-first indexing for all sites. The mobile version of your web pages is what Google crawls, indexes, and ranks. A fast, well-structured mobile website does more for your rankings than any app.
Modern deep linking, specifically Android App Links and iOS Universal Links (the replacements for Firebase), still lets your app open directly from search results for users who have it installed. Freelance SEO SG's 2026 breakdown covers how to implement these. They improve the user experience. They do not change your rankings.
Watch: Search YouTube for "Android App Links iOS Universal Links SEO 2025" for practical implementation walkthroughs to replace the old Firebase setup.
Build the App. Not for Google.
Build the app because your users need it. Distribute it well. Get the ratings up. But do not build an app expecting it to move Google web rankings. The tool that once made that possible is gone. Google has said it twice, in separate official documents. It ranks web pages. Not apps.
Your mobile website is the SEO asset. Build that instead.
