What Is App Store Optimization (ASO) and Why It Matters
App Store Optimization, or ASO, is the practice of improving how an app performs in app store search and browse results - the mobile equivalent of SEO, applied to the App Store and Google Play instead of Google Search. It matters because app store search is still one of the largest sources of app discovery, and a genuinely good app with weak ASO can sit at the bottom of search results indefinitely, invisible to exactly the people who would have downloaded it if they'd ever seen it.
What actually influences app store ranking
Both major app stores use a mix of signals, and while neither publishes an exact algorithm, a few factors are consistently, publicly acknowledged as significant.
- Keyword relevance in the title and metadata. The app's name, subtitle, and (on Google Play especially) the description are all indexed for search relevance, similar in principle to how a webpage's title and content are indexed by Google.
- Download velocity and conversion rate. How often people who see the listing actually download it, and how quickly downloads are accumulating, both feed into ranking - which means the app's icon, screenshots, and preview video are doing real, measurable work, not just decoration.
- Ratings and reviews. Both the average rating and the review volume factor in, and reviews are also a direct trust signal to the person deciding whether to download.
- Retention and engagement, particularly on Google Play, which has been increasingly explicit that it looks at whether people who download an app actually keep and use it, not just whether they downloaded it once.
- Update frequency and technical quality - crash rates, load times, and how actively an app is maintained all play into how favorably a store treats it.
Where to focus first
The single highest-leverage starting point for most apps is the listing itself - the title, subtitle/short description, screenshots, and icon - because these affect both search visibility and conversion rate at the same time, and they're entirely within your control without needing a single line of new code. A common mistake is treating the app store listing as an afterthought finished the week before launch, rather than as a living asset that gets tested and iterated the same way a website's landing page would be.
After the listing, keyword research specific to how people actually search within the app stores (which often differs meaningfully from how they'd phrase the same search on Google) is worth real time - guessing at keywords tends to under-perform even a modest, deliberate research pass.
What ASO can't fix
No amount of optimization will sustain rankings for an app people download, try, and quickly delete - retention signals catch up with an app that doesn't deliver on what its listing promised, and a mismatch between the marketing and the actual product tends to hurt more than it helps, because it drags down ratings and retention simultaneously. ASO amplifies a good app; it doesn't substitute for one.
A practical starting checklist
- Research the actual terms people search for in-store, not just what you'd assume.
- Put your most important keyword naturally in the title or subtitle, not buried in the description.
- Treat screenshots as a mini pitch, not a random assortment of app screens - lead with the strongest value proposition in the first one or two.
- Actively ask happy users for reviews at the right moment (after a completed positive action, not on first open).
- Update regularly - both stores factor in recency and active maintenance.
Getting ASO right is part of what we help clients think through for mobile app development at Burncode, because an app that's genuinely well built still needs to be found before any of that quality matters to a real user.