App Store Optimization, or ASO, has become one of the most important growth levers for mobile apps. Whether you are launching a new iOS app, scaling an Android product, or trying to improve conversion from paid user acquisition, the right ASO agency can help your app become more visible, more persuasive, and more profitable. The best agencies combine keyword research, creative testing, localization, analytics, competitive intelligence, and conversion rate optimization to improve performance across Apple’s App Store and Google Play.
TLDR: The top App Store Optimization agencies help mobile apps increase visibility, downloads, and conversion rates on iOS and Android. Leading agencies such as Phiture, AppTweak, SplitMetrics, Gummicube, Moburst, Yodel Mobile, and ConsultMyApp offer specialized ASO services for startups, scaleups, and enterprise apps. Choosing the right partner depends on your budget, app category, markets, growth goals, and whether you need strategy, execution, testing, localization, or full mobile growth support.
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Why App Store Optimization Agencies Matter
Millions of apps compete for attention across the App Store and Google Play. Even excellent products can struggle if users cannot discover them or if the store listing fails to communicate value quickly. An ASO agency helps solve this problem by improving how an app appears in search results, category rankings, browse traffic, and conversion funnels.
Unlike general marketing agencies, ASO specialists understand the unique mechanics of mobile marketplaces. They know how metadata, screenshots, ratings, reviews, app icons, preview videos, in app events, custom product pages, and store listing experiments influence installs. They also understand that iOS and Android require different approaches. Apple’s App Store places strong emphasis on keywords, subtitles, screenshots, and conversion assets, while Google Play uses a different indexing system that looks more like search engine optimization in some areas.
A strong ASO partner can help answer questions such as:
- Which keywords should your app target in each country?
- Why are users viewing your page but not installing?
- How should screenshots differ between iOS and Android?
- Which competitors are gaining traffic, and why?
- How can ratings and reviews be improved ethically?
- Which markets should be localized first?
What Makes a Great ASO Agency?
The best ASO agencies do more than rewrite an app title or change a few screenshots. They approach app growth as a continuous process of testing, learning, and optimization. A reliable agency should be able to show a clear methodology, explain how success will be measured, and adapt its strategy based on real store performance.
Look for agencies with strengths in the following areas:
- Keyword research: Identifying high intent, realistic, and relevant search terms for each platform and region.
- Creative optimization: Testing icons, screenshots, videos, feature graphics, and messaging to improve conversion.
- Localization: Adapting language, visuals, cultural references, and app positioning for international markets.
- Competitor analysis: Understanding what top ranking apps are doing and where your app can stand out.
- Experimentation: Running A B tests through Google Play Experiments, Apple Product Page Optimization, or external testing tools.
- Analytics and reporting: Connecting ASO performance to impressions, page views, installs, conversion rate, retention, and revenue.
Top App Store Optimization Agencies for iOS and Android Apps
1. Phiture
Phiture is one of the most recognized mobile growth consultancies in the world. Based in Berlin, the agency works with major apps across categories such as health, education, fintech, entertainment, and subscriptions. Phiture is especially known for its structured approach to ASO, lifecycle marketing, retention, and mobile growth strategy.
Its ASO services often include keyword optimization, creative testing, localization strategy, conversion rate optimization, and measurement frameworks. Phiture is a strong choice for companies that want more than a one time store listing update. It is particularly suitable for mature apps that need a sophisticated, data driven growth partner.
Best for: Enterprise apps, subscription businesses, and mobile teams looking for strategic growth support.
2. AppTweak
AppTweak is best known for its ASO intelligence platform, but it also offers consulting and managed services. The company provides robust data for keyword analysis, competitor tracking, category rankings, and market trends. Its agency services are useful for app teams that want expert guidance combined with strong technology.
Because AppTweak operates a dedicated ASO software platform, its consultants can base recommendations on large amounts of marketplace data. This makes it valuable for teams that want transparency, measurable insights, and regular optimization cycles.
Best for: Data focused app teams, marketers who want access to ASO tools, and companies scaling across multiple countries.
3. SplitMetrics
SplitMetrics is a major name in mobile growth and app store experimentation. The company offers products and services for ASO, A B testing, Apple Search Ads optimization, and conversion rate improvement. Its expertise is especially valuable for brands investing heavily in paid acquisition, because small improvements in store conversion can significantly reduce cost per install.
SplitMetrics can help app teams validate creative concepts before pushing them live, test different messaging angles, and understand how users respond to screenshots, icons, and videos. This is particularly important in competitive categories where the difference between an average listing and a high converting listing can be substantial.
Best for: Apps running paid campaigns, teams focused on conversion rate optimization, and companies that want advanced testing.
4. Gummicube
Gummicube is a long established ASO agency that focuses heavily on app store data, keyword optimization, and mobile conversion. The company has worked with apps across many verticals and is known for providing full service ASO support, including metadata optimization, creative strategy, and performance tracking.
One of Gummicube’s strengths is its emphasis on mobile specific behavior. Instead of treating app search like traditional web search, it focuses on how real app store users discover, compare, and install apps. This can be useful for brands that need a practical partner to manage ongoing optimization.
Best for: Companies looking for dedicated ASO management and hands on optimization across both major app stores.
5. Moburst
Moburst is a mobile first digital agency offering ASO, user acquisition, creative production, influencer marketing, media buying, and broader app growth services. It has worked with well known consumer brands and technology companies, making it a strong fit for apps that need both strategic positioning and execution at scale.
Moburst’s ASO services typically include store audits, keyword research, creative optimization, localization, and conversion improvements. Because the agency also handles paid growth and creative campaigns, it can align ASO with broader marketing efforts. This matters because paid traffic often lands on the same store pages that organic users see.
Best for: Consumer apps, funded startups, and brands seeking a full mobile marketing partner.
6. Yodel Mobile
Yodel Mobile is a UK based mobile growth agency with expertise in ASO, user acquisition, retention, mobile strategy, and analytics. The agency often works with apps that want to build sustainable growth rather than rely only on short term acquisition tactics.
Yodel Mobile’s approach usually includes auditing the app’s funnel, improving discoverability, strengthening store page conversion, and aligning acquisition with retention. This broader perspective can be helpful because more installs are not always the answer. A successful app also needs the right users, strong onboarding, and long term engagement.
Best for: Apps that want ASO connected to the complete mobile growth funnel.
7. ConsultMyApp
ConsultMyApp specializes in mobile marketing, ASO, customer engagement, and app growth consulting. The agency works with brands that want to optimize the entire user journey, from discovery in the app stores to activation, retention, and repeat usage.
Its ASO offering can include keyword research, metadata updates, creative testing, competitor reviews, and localization. Since ConsultMyApp also focuses on CRM and engagement, it is a valuable option for apps where growth depends not only on installs but also on customer lifetime value.
Best for: Apps that care about both acquisition and retention, especially in competitive consumer categories.
8. REPLUG
REPLUG is a mobile app marketing agency based in Europe, offering services across ASO, paid user acquisition, mobile analytics, creative strategy, and growth consulting. The agency is often a good fit for startups and scaleups that need a flexible team capable of supporting multiple growth channels.
REPLUG’s ASO work is typically grounded in market analysis, keyword planning, listing optimization, and creative improvement. Its mobile marketing background also helps ensure ASO decisions are aligned with performance campaigns, tracking, and user quality.
Best for: Growing apps that need practical ASO plus broader mobile marketing expertise.
9. PreApps
PreApps focuses on helping apps launch, gain visibility, and attract early users. Its services include ASO, app marketing, public relations, influencer outreach, and launch strategy. This makes it especially interesting for app founders preparing for release or trying to build momentum in the early stages.
For newer apps, ASO can make a major difference. A clear title, strong screenshots, optimized keyword targeting, and compelling description can help an app look credible from day one. PreApps may be a useful partner for teams that need support before and immediately after launch.
Best for: New apps, launch campaigns, and founders seeking early market visibility.
10. App Radar
App Radar offers ASO software and managed services for mobile app growth. The platform helps with keyword tracking, metadata management, competitor monitoring, and optimization workflows. Its service side can support teams that want expert input while maintaining visibility over the process.
App Radar is particularly useful for companies managing app listings across multiple countries or product lines. Its workflow tools can help teams organize updates, monitor performance, and keep optimization consistent over time.
Best for: Teams that want software assisted ASO and scalable metadata management.
How ASO Differs for iOS and Android
Although the goals are similar, ASO for Apple’s App Store and Google Play is not identical. On iOS, keyword fields, app names, subtitles, and in app events can all influence visibility. Apple also offers Custom Product Pages and Product Page Optimization, which allow marketers to tailor and test different page experiences.
On Android, Google Play considers elements such as the title, short description, long description, visual assets, engagement signals, and app quality indicators. Because Google’s system can interpret text more broadly, the description often plays a larger role than it does on iOS. Android also provides native store listing experiments, making creative testing more accessible.
A good ASO agency should understand these differences and avoid applying the same strategy to both platforms. For example, an iOS keyword strategy may need careful character allocation, while an Android strategy may require more natural language optimization in the description. Screenshots may also need different layouts because device dimensions, store presentation, and user expectations vary.
How to Choose the Right ASO Agency
Before selecting an agency, define what you actually need. Some apps need a complete ASO overhaul, while others need ongoing experiments or localization support. The right agency for a global gaming app may not be the right agency for a B2B productivity tool.
Use the following checklist when evaluating potential partners:
- Relevant experience: Have they worked with apps in your category?
- Platform expertise: Do they understand both iOS and Android optimization?
- Testing process: Can they run structured creative and metadata experiments?
- Reporting quality: Will they connect ASO changes to measurable business outcomes?
- Localization ability: Can they adapt your listing for different languages and cultures?
- Collaboration style: Do they work well with product, design, analytics, and paid marketing teams?
- Transparency: Are they clear about what they will do and how results will be judged?
Common ASO Services to Expect
Most top agencies offer a combination of strategic and execution focused services. A typical engagement may begin with an audit of your current store listings, competitors, rankings, traffic sources, and conversion rates. From there, the agency may recommend new metadata, refreshed creative assets, keyword targets, localization priorities, and a testing roadmap.
Common deliverables include:
- ASO audit for iOS and Android listings
- Keyword research and prioritization
- App title, subtitle, short description, and long description recommendations
- Screenshot and video concepts
- Icon testing guidance
- Competitor benchmarking
- Localization strategy
- Ratings and reviews improvement recommendations
- Monthly reporting and performance analysis
Final Thoughts
The best App Store Optimization agency is not simply the one with the biggest client list or the most impressive case studies. It is the agency that understands your app, your audience, your markets, and your growth model. For some teams, that may mean a highly strategic partner like Phiture. For others, it may mean a testing focused company like SplitMetrics, a full service mobile agency like Moburst, or a platform supported partner like AppTweak or App Radar.
ASO is not a one time task. Store algorithms change, competitors update their listings, user expectations evolve, and new features become available. The strongest results usually come from continuous improvement: researching, testing, measuring, and refining. With the right ASO agency, your iOS or Android app can gain stronger visibility, convert more visitors, and build a healthier foundation for long term mobile growth.
