When someone says they're "optimizing their app," they could mean a dozen different things. Optimizing the code so it loads faster. Optimizing the onboarding so more users complete setup. Optimizing the push notifications so fewer people turn them off.
All of those are valid. But the most impactful form of app optimization — and the one most indie developers never do — happens before anyone even downloads the app.
It happens in the App Store listing.
Short answer: optimizing an app means improving the factors that determine whether people find it, download it, and keep using it. For indie iOS apps, that splits into two jobs: in-app optimization and App Store Optimization (ASO). If your app is already useful but downloads are low, the App Store listing is usually the highest-leverage place to start.
The Two Types of App Optimization
App optimization broadly splits into two categories:
1. In-app optimization — everything inside the product itself.
- Performance: load time, crash rate, battery usage
- UX: onboarding flow, navigation, feature discoverability
- Retention: push notifications, re-engagement, habit loops
- Monetization: paywall placement, pricing, trial length
2. Store optimization — everything that affects how your app is found and downloaded.
- Metadata: title, subtitle, keyword field, description
- Visuals: screenshots, preview video, app icon
- Social proof: ratings, reviews, review response strategy
- Localization: metadata in multiple languages for multiple markets
Most developers are familiar with the first category. It's the work that happens in Xcode. The second category — store optimization, formally called App Store Optimization or ASO — is where most indie apps have the largest untapped opportunity.
What Store Optimization Actually Involves
When you optimize your App Store listing, you're improving four things:
Discoverability — how often your app appears in search results. Apple's algorithm reads your title, subtitle, and keyword field to decide which searches your app is relevant for. If those fields aren't optimized with the right keywords, your app doesn't show up — regardless of how good it is.
Conversion — how often someone who sees your listing decides to download. This is driven by your screenshots, app icon, and the first two lines of your description (the text visible before the "more" button). A strong screenshot with a clear benefit statement can double conversion rates over a raw UI screenshot.
Ratings and reviews — how your social proof compares to competing apps. Apple's algorithm factors in review volume and recency. A newer app with 50 recent 4.8-star reviews often outranks an older app with 200 reviews that are two years old.
Localization — how visible your app is in non-English markets. This is the most overlooked lever in store optimization. If your metadata is only in English, you're effectively invisible to users searching the App Store in Japanese, German, French, or Portuguese. Markets like Japan and Germany have high purchase rates and significantly less competition than the US English store.
Why Most Indie Developers Only Do Half the Job
The in-app optimization work is visible. You can see it in your crash logs, your session data, your DAU numbers. When you improve onboarding, you can measure the result the next day.
Store optimization is less visible. You can't easily see that your app is ranking #140 for "habit tracker" in the US when it could rank #12 in the same category in Germany — because you've never looked at German keyword data.
This is why most indie apps are discovered primarily by users who already know the app name and search for it directly. Organic discovery — users finding the app through category browsing or keyword search — is minimal for apps that haven't invested in metadata optimization.
The opportunity gap between apps that have done proper ASO and apps that haven't is one of the largest in mobile software. An app that ranks well for 20 keywords in 5 countries gets orders of magnitude more organic downloads than an identical app with unoptimized metadata.
What Optimization Looks Like in Practice
A concrete example: a productivity app with the title "FocusFlow" and no subtitle.
After optimization:
- Title: "FocusFlow — Pomodoro Timer" (adds primary keyword in 30 characters)
- Subtitle: "Focus, work blocks & time track" (adds secondary keywords)
- Keyword field: all 100 characters used, no repeats from title/subtitle, targeted at specific search terms like "pomodoro technique" and "deep work timer"
- Screenshots: first screenshot shows "Build focus habits in 7 days" instead of raw UI
- Localization: metadata translated and keyword-researched for Japan, Germany, and France — three markets where productivity apps convert well and the competition is significantly lower than the US
The result after 3–4 weeks: rankings appear for keywords the app was previously invisible for. Organic downloads from non-English markets begin. Each market where you rank for relevant keywords compounds over time as behavioral signals (downloads, retention) reinforce your position.
The Part That Takes the Most Time
Keyword research for international markets is the most time-intensive part of store optimization. It requires pulling search volume data from ASO tools for each market separately, identifying which terms have real traffic, cross-referencing against what your competitors rank for, and writing metadata that fits within Apple's character limits (30 characters for title, 30 for subtitle, 100 for the keyword field).
For an indie developer doing this alone, proper research for a single market takes 4–6 hours. Across 5 markets, that's a full working week — before writing a single line of metadata.
That's the problem LocalizeRank solves. Market research, keyword gap analysis, and ready-to-paste metadata for your App Store listing across 5, 10, or 20 markets — delivered as a Google Sheet you paste directly into App Store Connect.
If your English listing is already decent but your international downloads are flat, the next step is usually App Store localization: researched title, subtitle, keyword field, and screenshot text for markets like Japan, Germany, France, Brazil, and South Korea.
How to Know Which Type of Optimization to Do First
A simple framework: if your app has users and a significant number of them churn in the first session, fix in-app optimization first — no amount of store optimization will help an app with broken onboarding.
If your app has good retention metrics (users who find it come back) but low organic downloads, store optimization is the lever. You have a distribution problem, not a product problem.
Most indie apps have both, but the store optimization gap is almost always larger — because developers build in Xcode and forget that the App Store listing is also a product.
A quick diagnostic:
- Check your App Store Connect impressions vs. downloads. If your conversion rate is below 3%, your visuals and description need work.
- Check your keyword rankings. If you rank for fewer than 10 keywords in your primary market, your metadata needs research.
- Check your international sales. If less than 15% of your downloads come from non-English markets, you're invisible to the majority of the world's iOS users.
Before submitting your next metadata update, review your title, subtitle, and keyword field for duplicate words and wasted characters — recovering even 20–30 characters can add several new indexed terms without changing your app.
If localization is the missing piece, review the LocalizeRank ASO localization packs. You only pay after I confirm your app is a good fit.
FAQ
What does optimizing an app mean?
Optimizing an app means systematically improving the factors that determine how many people find, download, and keep it. It splits into two types: in-app optimization (performance, UX, retention) and store optimization, formally called ASO (metadata, screenshots, ratings, localization). Most indie developers do one and skip the other — and the bigger untapped opportunity is almost always store optimization.
What does it mean to optimize an app for the App Store?
Optimizing for the App Store means improving your listing so Apple surfaces your app in more relevant searches and more users choose to download it. This involves keyword research and metadata (title, subtitle, keyword field), visual assets (screenshots, icon), ratings collection, and localization — adding metadata in local languages for non-English markets.
What does "optimizing apps" mean on iPhone?
When your iPhone shows "Optimizing apps" during an iOS update, it's a technical process — the OS is re-compiling app code for the updated system. This is unrelated to App Store Optimization (ASO), which is the marketing discipline of improving your app's store listing for discoverability and downloads.
How do you optimize an app for more downloads?
Start with keywords: research what users in your category actually search for (use AppFollow or ASOdesk free tiers), put the best keyword in your title, secondary keyword in your subtitle, and fill the 100-character keyword field with remaining candidates — no words duplicated from your title or subtitle. Then improve your first screenshot to show a user benefit, not just UI. Then add localized metadata for at least 3 non-English markets. These three changes consistently move organic download numbers.
