10 Best Ecommerce Mobile App Developers for Shopify Stores (USA)

If you're looking to build a custom mobile app for your Shopify store, most people look at two ways to do it: SaaS app builders that let you configure a templated app, or custom development agencies that build something from scratch.

There are a couple of issues with SaaS app builders. One, that they require you to do a lot of work to build and maintain your app (taking up labor you don’t exactly have to spare right now). And two, they often come with limitations, and don’t let you fully recreate everything on your web store.

These tools are fine in a lot of cases. You can certainly build a high-quality, professional mobile app that drives revenue with one of these tools.

But if you’re looking for an option with more control, and that give you a dedicated mobile app development partner, this guide is for you.

This guide focuses on development agencies and services that create custom mobile apps tailored specifically to your Shopify business. These range from full-service agencies building native iOS and Android apps to managed services that turn your existing website into a polished app experience.

Custom development typically costs more upfront than SaaS builders (think $50,000+ versus $200/month), but offers more control over features, design, and long-term ownership. Whether that tradeoff makes sense depends on your budget, timeline, and how differentiated your app needs to be.

What to Look for in a Mobile App Development Partner

Before diving into specific agencies, here's what matters when choosing a development partner for your Shopify mobile app:

Shopify expertise matters

Building an Ecommerce app means integrating with Shopify's checkout, customer accounts, inventory, and order management. Agencies with Shopify Plus Partner status or documented Shopify experience will navigate these integrations more efficiently.

Technology approach

Most agencies use React Native or Flutter for cross-platform development (one codebase for iOS and Android). Some build fully native apps using Swift (iOS) and Kotlin (Android). Cross-platform is typically faster and cheaper; native can offer better performance but costs more.

Full-service vs development-only

Some agencies handle everything from strategy and design through App Store submission and ongoing maintenance. Others focus purely on development and expect you to manage the rest.

Timeline and communication

Custom app development usually takes 3-6 months, though simpler projects can launch in 4-8 weeks. Ask about their project management approach and how they handle scope changes.

The List: Best Mobile App Developers for Shopify

1. MobiLoud

Best for: Brands that want a polished mobile app without rebuilding from scratch, without spending $100K+

MobiLoud takes a different approach than traditional development agencies. Rather than building a custom app from the ground up, they convert your existing Shopify website into native iOS and Android apps that stay synchronized with your site.

This "website-to-app" model means your existing checkout flow, integrations, and customizations carry over automatically. When you update your website, the app updates too - no separate development work required.

The service is fully managed, covering app setup, testing, App Store submission, and ongoing maintenance. MobiLoud handles push notification integration, biometric login, and other mobile-specific enhancements while preserving whatever you've already built on your site.

Key capabilities:

• Native iOS and Android apps built from your existing website
• Full synchronization with Shopify checkout, accounts, and integrations
• Push notifications with segmentation and automation
• Managed App Store submission and ongoing updates
• Dedicated project manager throughout the process

Pricing: Starts at $799/month for ongoing service, plus a one-time setup fee. No revenue share or per-transaction fees.

Timeline: Typically 4-6 weeks from kickoff to App Store submission.

Best fit: MobiLoud is ideal for established Shopify brands that already have a well-optimized mobile website and want to extend it to the app stores, without managing a separate development project. The tradeoff is less granular control over app-specific features compared to a fully custom build.

For most Shopify brands, there’s no need to reinvent the wheel and build a new app from scratch.

If your mobile website is already fast, already looks and feels smooth and easy to use (as most mobile websites today are), MobiLoud offers a much easier, faster, more cost-efficient way to launch a native app for your site.

Want to see what’s possible? Get a free preview of your mobile app now.

2. Koombea

Koombea is a full-service software development agency that's held Shopify Plus Partner status since 2018. They build native iOS and Android apps, cross-platform apps using React Native and Flutter, and Progressive Web Apps.

The agency handles end-to-end development, from initial strategy and UX design through development, testing, and launch. They've worked with both funded startups and Fortune 500 companies, with particular depth in ecommerce and retail.

Key capabilities:

• Native iOS/Android and cross-platform development (React Native, Flutter)
• Progressive Web Apps (PWAs)
• Shopify Plus integration expertise
• Full design and UX services
• Post-launch support and maintenance

Pricing: Custom quotes based on project scope. Expect $50,000-$200,000+ for a fully custom mobile app.

Timeline: 3-6 months for most projects, depending on complexity.

3. Mobikasa

Mobikasa is an ecommerce-focused development agency with offices in New York, Los Angeles, London, Dubai, and New Delhi. They build custom mobile apps alongside web development work, with experience across Shopify, Magento, BigCommerce, and WooCommerce.

The agency has been building ecommerce solutions since 2011 and emphasizes scope discovery to understand business goals before development begins. They've earned recognition from Clutch and other review platforms for their ecommerce development work.

Key capabilities:

• Native iOS and Android app development
• Cross-platform development
• Multi-platform ecommerce experience (Shopify, Magento, BigCommerce)
• Custom integrations and API development
• UI/UX design services

Pricing: Custom project-based pricing. Mobile app projects typically start at $75,000+.

Timeline: 4-8 months depending on project scope.

4. Goji Labs

Goji Labs is a Los Angeles-based product agency specializing in design, strategy, and development for web and mobile applications. They've built over 400 digital products across industries including ecommerce, FinTech, and EdTech, helping clients raise over $500M collectively.

The agency is known for its emphasis on product strategy and user experience. They position themselves as a "product partner" rather than just a development vendor. This means more involvement in defining what gets built, not just how it gets built.

Key capabilities:

• Product strategy consulting
• UX research and UI/UX design
• Mobile app development (iOS, Android, cross-platform)
• Web application development
• Post-launch iteration and optimization

Pricing: Custom project pricing. Engagements typically range from $50,000-$300,000+ depending on scope.

Timeline: 3-6 months for full-cycle engagements; MVPs can move faster.

5. Folio3

Folio3 is a US-based software development company with over 15 years of experience and Shopify Plus Partner certification. They have offices across the US, UK, UAE, Mexico, and Australia, with particular strength in complex ecommerce integrations.

Beyond mobile app development, Folio3 specializes in connecting Shopify with ERPs, CRMs, marketplaces like Amazon and eBay, and other enterprise systems. This makes them a good fit for brands with complex operational requirements.

Key capabilities:

• Native and cross-platform mobile app development
• Progressive Web Apps (PWAs)
• Custom Shopify app development
• ERP and CRM integrations
• Multi-vendor marketplace development

Pricing: Custom quotes. Enterprise mobile projects typically start at $75,000+.

Timeline: 3-6 months for mobile app projects.

6. DigitalSuits

DigitalSuits is a Shopify development agency recognized by Clutch and DesignRush as a top custom ecommerce development vendor. They build both custom apps for individual merchants and public apps for the Shopify App Store.

The agency offers transparent pricing guidance, noting that basic custom Shopify apps start around $3,000-$5,000, while more complex projects with advanced features range from $5,000-$50,000+. This relative transparency is uncommon in the agency space.

Key capabilities:

• Custom Shopify app development
• Public Shopify App Store development
• Full-stack ecommerce development
• Third-party integrations
• Ongoing maintenance and support

Pricing: $3,000-$5,000 for basic apps; $5,000-$50,000+ for complex projects. More transparency than most agencies.

Timeline: Weeks for quick prototypes; 2-4 months for full custom builds.

7. Eastside Co

Eastside Co is a Shopify-focused agency based in Birmingham, UK, with deep expertise in custom app development and payment gateway integrations. They've built both custom apps for individual merchants and public apps for the Shopify App Store, including the TrueLayer app for open banking payments.

The agency handles the full development lifecycle, from requirements through QA testing and App Store submission. They're particularly strong in payment integrations and custom functionality that extends Shopify's native capabilities.

Key capabilities:

• Custom Shopify app development
• Public Shopify App Store apps
• Payment gateway integrations
• Custom theme development
• QA testing and deployment

Pricing: Custom project pricing based on scope.

Timeline: Varies by project complexity.

8. Dinarys

Dinarys positions itself as a custom Shopify development agency that turns "ecommerce challenges into your greatest strengths." They offer full-cycle development from ideation and strategy through deployment and ongoing maintenance.

The agency uses agile methodology and emphasizes ongoing collaboration throughout the development process. They build both public and private Shopify apps, with experience in B2B functionality, marketing automation, and CRM integrations.

Key capabilities:

• Custom Shopify app ideation and strategy
• Full-stack development (public and private apps)
• Third-party API integrations
• B2B ecommerce functionality
• Ongoing maintenance and updates

Pricing: Custom project-based quotes.

Timeline: Agile sprints with iterative delivery.

9. GenovaWebArt

GenovaWebArt has over 8 years of Shopify app development experience with particular focus on B2B and ecommerce solutions. They emphasize a process-driven approach, starting with investigation of business processes before recommending solutions.

The agency has worked with startups, mid-sized companies, and international corporations, building custom Shopify solutions at varying scales. They position themselves as problem-solvers first, developers second.

Key capabilities:

• Custom Shopify app development
• B2B ecommerce functionality
• Business process analysis
• Custom ERP integrations
• Shopify theme development

Pricing: Custom quotes based on project scope.

Timeline: Defined project phases with clear milestones.

10. Sunrise Integration

Sunrise Integration is a Los Angeles-based Shopify Plus Partner with over 20 years of experience in data integration and ecommerce. They focus on React Native and Flutter for cross-platform mobile development.

The agency's strength is connecting mobile apps with complex backend systems - ERPs, inventory management, order fulfillment, and third-party services. This integration expertise sets them apart from agencies focused purely on frontend development.

Key capabilities:

• Cross-platform mobile development (React Native, Flutter)
• Shopify Plus integrations
• ERP and backend system connections
• Data synchronization and automation
• API development and management

Pricing: Custom enterprise pricing.

Timeline: 3-6 months for typical projects.

Custom Development vs Managed Services: Which Approach Fits?

The first step in choosing the right agency for you is choosing the right approach. 

The choice comes down to two fundamental approaches:

Full custom development (Koombea, Mobikasa, Goji Labs, etc.) makes sense when:

• You need highly specific features that don't exist in any template (or on your site)
• You have budget for $50,000-$200,000+ upfront investment
• You want complete ownership of the codebase
• You have internal resources to manage ongoing maintenance

Managed website-to-app services (MobiLoud) make sense when:

• Your mobile website already works well and you want to extend it to an app
• You prefer predictable monthly costs over large upfront investment
• You want ongoing maintenance handled externally
• Speed to market matters more than granular customization

There's no universally "better" option - the right choice depends on your specific situation, budget, and goals.

Final Thoughts

Building a mobile app for your Shopify store is a significant investment, whether you go the custom development route or choose a managed service approach. The agencies and services listed here represent different points along the spectrum from fully custom builds to turnkey solutions.

Before reaching out to any partner, get clear on your requirements: What specific functionality do you need? What's your realistic budget? How quickly do you need to launch? How much ongoing maintenance can you handle internally?

With those answers in hand, you'll be better positioned to find the right development partner for your Shopify mobile app project.

If you’re ready to explore launching your own mobile app, get in touch with us - book a free consultation now to discuss how MobiLoud can help you go live with minimal cost and effort.