Rahul Gupta
Rahul Gupta

CEO, Technology Services

25 Years of Experience
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Mobile App Development Company

Mobile App Development Services – Build Superior Mobile Products

Expand your business reach with high-quality mobile app development services. We build superior digital products tailored to your specific business needs while delivering seamless user interactions across modern platforms and devices, including iOS, Android, and cross-platform solutions.
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Clients Served
25,000+
Total Vetted Professionals
20,000+
Toptal Total Projects Delivered
64,000+
Industries Served
300+

TRUSTED BY LEADING BRANDS

Our Services

Toptal Mobile App Development Services

Harness the full potential of mobile technology with Toptal’s Mobile App Development Services. Toptal delivers end-to-end solutions that transform user experiences and drive business growth.

iOS App Development

Develop custom apps tailored to iOS standards, ensuring optimal performance and user engagement.

Android App Development

Craft high-quality Android apps designed to meet business requirements and boost business growth.

Cross-platform Mobile App Development

Utilize leading technologies for cross-platform development to deliver consistent mobile experiences across devices.

Mobile UI Design

Create visually appealing apps with user interface designs that ensure a seamless user experience on all mobile platforms.

Mobile UX Design

Enhance app users’ satisfaction with strategic UX design focused on usability and immersive experiences.

Mobile App Testing

Ensure your app’s functionality and performance with rigorous testing across all mobile device platforms.

App Development Consulting

Refine your mobile strategy with expert consulting, aligning app development with business processes.

App Store Optimization

Boost your app’s visibility and user engagement through strategic ASO practices tailored to both iOS and Android markets.

Mobile App Maintenance

Maintain your app’s edge with continuous updates and support, leveraging the newest mobile technologies.

Mobile App Security

Implement advanced security solutions to safeguard your mobile applications against evolving cyber threats.

Mobile App Analytics

Gain insights into user behavior and app performance with advanced tools, driving data-informed decisions for growth.

Responsive and Adaptive Web Design

Create optimized websites ensuring seamless user experiences across all devices and screen sizes.

Discover the right mobile app development service for your needs

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PARTNERSHIP THAT WORKS

How We Deliver Mobile App Development Services

Our mobile app development team, with experience at leading companies, will work with you to develop and deploy tailored solutions that meet your business needs and unique industry demands, providing you with sustainable results and long-term success.

1

Discover

A leader from our team assesses your business challenges, identifies opportunities, and recommends the most suitable engagement model.
2

Define

A Toptal leader will work with you to define your goals and service needs – from full end-to-end delivery to consulting services.
3

Develop

We will create your unique project timeline, process, and first drafts, whether it’s defining your app’s core functionality and design or building your prototype.
4

Deploy

Toptal will get to work, tracking quality assurance, handling project management, and maintaining the delivery schedule.
Rahul Gupta
Rahul Gupta
CEO, Technology Services

As Toptal’s CEO, Technology Services, Rahul leads the strategy, delivery, and implementation of best-in-class cloud, security, artificial intelligence, and other technology services. Before joining Toptal, he held senior leadership positions at Conduent, Capgemini, and HCL Technologies.As Toptal’s CEO, Technology Services, Rahul leads the strategy, delivery, and implementation of best-in-class cloud, security, artificial intelligence, and other technology services. Before joining Toptal, he held senior leadership positions at Conduent, Capgemini, and HCL Technologies.

Previously At

Capgemini
CUSTOMIZED SOLUTIONS

Mobile App Development Services That Deliver Value

Toptal delivers leading mobile app development services through its diverse talent network and flexible delivery models. We implement the right skills at each project phase, blending expertise from various roles for seamless execution.
Managed Delivery by Toptal
End-to-end project delivery per your specific requirements.
CEO, Technology Services's avatar
CEO, Technology Services
Delivery Manager's avatar
Delivery Manager
Product Manager's avatar
Product Manager
Mobile App Engineer's avatar
Mobile App Engineer
UX/UI Designer's avatar
UX/UI Designer
iOS Developer's avatar
iOS Developer
Mobile Solutions Architect's avatar
Mobile Solutions Architect
Mobile QA Engineer's avatar
Mobile QA Engineer
Rahul Gupta
Rahul Gupta
Toptal Logo

CEO, Technology Services

As CEO, Technology Services, Rahul is responsible for leading the go-to-market strategy, solutions, and delivery for Toptal’s Technology Services. Rahul recently served as Conduent’s CTO and Global Head of Software Engineering and Product Development in the company’s Enterprise Technology Services organization, leading the development and delivery of client-facing technology and platform strategies across the Transportation, Government, and Commercial portfolios. Prior to Conduent, Rahul held leadership positions at Capgemini, HCL Technologies, and Infosys. He holds a bachelor’s in engineering from DCRUST and an MBA from MDI Gurgaon in India.

Previously at

Capgemini

Technology Experience

25+ Years

Rachael Karaffa
Rachael Karaffa
Toptal Logo

Delivery Manager

Rachael serves as a Delivery Manager at Toptal with a focus on leading diverse global teams in developing innovative solutions for our clients. She works across multiple disciplines, including technology, marketing, and management consulting. Rachael specializes in managing people and client relationships, process optimization, and driving teams toward optimal business outcomes.

Previously Managed Client

Experience

9+ Years

Chris Busch
Chris Busch
Verified Expert in Product Management
Experience Icon

28+ Years

of Experience

Product Manager

Chris is a self-starting entrepreneur who transforms visions into compelling SaaS product strategies and delivers ROI. He's invented and led product, design, and CI/CD engineering up to 130 FTE for impactful products in real-time analytics, NLP, and IoT for consumer/enterprise markets as well as healthcare AI/ML. Chris's platforms generate $350 million in revenue, using emerging technologies at SAP and Cognizant. He is a two-time recipient of the "IoT Evolution Product of the Year" award.

Previously at

Angel Venchev
Angel Venchev
Verified Expert in Engineering
Experience Icon

11+ Years

of Experience

Mobile App Engineer

Angel is an experienced full-stack developer. He's most proud of building an end-to-end, encrypted mobile application that helps people store and share what's most valuable to them. He led a team of four to migrate from a legacy system and a team of two to create a white-boxed coaching mobile application. With more than 11 years of experience in the industry, Angel worked on projects for companies like Reddit, Microsoft, Wells Fargo, and others.

Previously at

Lee Shea
Lee Shea
Verified Expert in Design
Experience Icon

19+ Years

of Experience

UX/UI Designer

Lee is a startup veteran and former UX consultant who has led product design for companies like Toyota and Apple. He leverages business and customer insights to collaborate on design solutions that are highly engaging, low friction, and easy to use.

Previously at

Mehul Dhorda
Mehul Dhorda
Verified Expert in Engineering
Experience Icon

11+ Years

of Experience

iOS Developer

Mehul is a full-stack engineer with more than 11 years of professional experience, specializing in iOS development for the last seven years. He has led consumer-facing projects impacting millions of Uber, BlackBerry, and Bolt users. His professional background includes working with various technologies, including iOS, web, back-end, and desktop. Mehul is eager to take on iOS projects where he can leverage his experience to drive projects forward efficiently and with high-quality work.

Previously at

Piotr Poznanski
Piotr Poznanski
Verified Expert in Engineering
Experience Icon

23+ Years

of Experience

Mobile Solutions Architect

Piotr is a technical lead with 23+ years of experience working with CERN, Motorola Solutions, universities, and more. He has led projects, developed and delivered complex web and mobile solutions, including business and technical requirements, architecture, 3rd-party API integrations, data acquisition, and processing for BI. Piotr co-developed the pan configuration language and has a PhD in computer science.

Previously at

Enzo Heredia
Enzo Heredia
Verified Expert in Engineering
Experience Icon

18+ Years

Engineering Experience

Mobile QA Engineer

Enzo is an engineer with more than 18 years of experience in QA/QA automation, working with the latest technologies and highest industry quality standards to automate web UIs, REST APIs, as well as back-end services. He's comfortable in startups as well as large companies, either as the only person in a QA role or a member of any size team. He also has experience defining processes, procedures, and tools to achieve the best quality.

Previously at

UNRIVALED EXPERTISE

Our Talent Has Worked With Top Companies

Having previously worked with these leading global companies, our talent brings valuable insights and expertise to deliver world-class outcomes.

Google
OpenAI
Meta
Microsoft
Apple
GoogleOpenAIMetaMicrosoftAppleIBMTeslaOracleAccentureAmazon Web ServicesAirbnbintelDuolingoBooking.comSAPHBOAdobeCiscoNvidiaSAS

OUR THOUGHT LEADERSHIP

Explore Insights From the Mobile App Development Field

Read the latest articles and resources to keep you current on emerging trends in digital innovation, mobile development services, cutting-edge UI/UX designs, and more.

Apache Cordova Tutorial: Developing Mobile Applications with Cordova

Mobile applications are creeping in. Developing for each mobile platform can be an exhaustive task, especially if resources are limited. This is where Apache Cordova comes in handy by providing a way to develop mobile applications using standard web technologies - HTML5, CSS3 and JavaScript. This article explores how one can get started with Apache Cordova and build mobile applications targeted at a wide range of mobile devices.

Read More
Filip Petkovski

Filip Petkovski

Verified Expert in Engineering
10 Years of Experience
Filip is a software engineer with expertise in desktop, mobile, and full-stack web development. Currently a staff production engineer at Shopify, he has also held positions at enterprise software companies Personio and Red Hat. While earning a master's degree in computer science from the University of Zagreb Faculty of Electrical Engineering and Computing, Filip was selected as a Google Summer of Code participant.

Expertise

Previously at

Shopify

Maximizing the Value of Mobile App Development Services

Planning Your Mobile App Development Project

Mobile apps have become essential tools for delivering seamless, on-the-go experiences, whether engaging customers or empowering internal teams. Yet turning a promising idea into a high-impact product takes more than code. It demands strategic alignment, a capable development partner, and a crystal-clear understanding of your goals, constraints, and end users.

The best mobile apps are built on a foundation of scalable architecture, intuitive UI/UX design, and post-launch adaptability. Whether you’re launching a new product or extending an existing system, professional mobile app development services provide the structure and technical depth needed to move from concept to market with confidence. Success depends on thoughtful planning, the right technology choices, and a team that can guide you through the complexities of the mobile ecosystem.

In this guide, we’ll explore the key components of effective mobile app development, including how to select a development partner, estimate costs, and plan for long-term support, performance, and return on investment.

How to Choose a Mobile App Development Partner

When seeking an app development solution, look for a strategic partner that will enable your app to evolve with user needs and market demands. An effective mobile app development company will provide end-to-end support, including product strategy, UI/UX design, scalable engineering, and post-launch optimization.

Ultimately, your app development partner should function as an extension of your internal team and bring the technical expertise and strategic foresight needed to deliver meaningful business results.

These tips will help you find a dependable firm:

  • Assess platform-specific experience. Review the firm’s work across iOS, Android, and cross-platform frameworks like Flutter or React Native to ensure alignment with your product goals.
  • Look for structured project management. Firms that follow Agile principles and use frameworks like Scrum are likely to value adaptability and accountability—qualities that prove essential as priorities inevitably shift during development.
  • Check for cross-functional team support. Your development partner should offer dedicated resources across key roles, including UI/UX design, QA testing, backend systems, and product planning. This reduces handoff friction and improves speed to market.
  • Seek proactive communication. Choose a team that flags risks early, manages dependencies between teams, and keeps your roadmap on track.

Mobile App Development Services Pricing Considerations

Done right, app development is a strategic investment with long-term returns in user engagement, operational efficiency, and competitive differentiation. Cost is a reflection of scope, technical complexity, and long-term maintainability. To avoid overruns and protect your investment, it’s important to understand how different pricing models for mobile development services work and approach the process with due diligence.

Keep these recommendations in mind when planning your app budget:

Clarify the project scope early. Adding or changing requirements mid-project is one of the biggest drivers of increased cost. Establish clear features, user stories, and success metrics up front to reduce surprises later.

Compare pricing models. Fixed-bid models, where scope and cost are agreed upon in advance, work well for clearly defined, smaller projects. Time-and-materials pricing, which bills for hours worked and resources used, offers greater flexibility for evolving products or iterative builds. A phased delivery model provides the best of both approaches and allows you to start with a fixed-cost discovery or minimum viable product (MVP) phase, followed by modular extensions as the product evolves.

Account for true cost drivers. Factors like feature complexity, platform choice (native versus cross-platform), and team location can significantly influence your budget. A feature-rich native app built by a US-based team will carry a different price tag than a streamlined cross-platform MVP developed offshore, but cost alone shouldn’t outweigh strategic priorities.

Don’t forget post-launch expenses. App store fees, backend hosting, analytics tools, and version updates should be factored into the long-term investment. Budgeting for these from the start helps avoid surprises later.

A word of caution: prioritize transparency over shortcuts or discounts. Work with a partner that can clearly explain how their pricing relates to app quality, performance, and future-proofing. If an agency’s timeline or price seems too good to be true, they may be omitting key steps—such as QA, security, or documentation—from the app development process.

Mobile App Development Process, Tools, and Methodologies

Mobile application development services are built around a structured, iterative process that spans from concept discovery to post-launch support. Whether you’re creating a customer-facing product or an internal tool, success depends on how well each stage of the development lifecycle aligns with your goals, workflows, and long-term vision.

Explaining the Mobile App Development Process

Turning a nebulous concept into a polished, user-ready product is no easy task. While the specific tools and tactics may vary, most successful app projects follow a repeatable sequence of phases.

During the foundational phase of discovery and planning, the product team works closely with stakeholders to define business objectives, user needs, and technical requirements. Activities such as stakeholder interviews, competitor analysis, and the development of a prioritized feature roadmap will shape the project’s direction and align team members.

Next, during the UI/UX design phase, designers translate early insights into wireframes, user flows, and high-fidelity mockups. The aim is to reflect your brand while enhancing usability and reducing friction across key user journeys. Once the design is locked in, frontend and backend development begin, with software engineers building the UI and the systems behind it, including databases, APIs, and third-party integrations.

Before release, the quality assurance testing phase ensures the product performs reliably across devices, screen sizes, and operating systems. QA engineers run manual and automated tests to catch bugs and validate functionality. Once performance benchmarks are met, deployment follows—a process that includes submitting your product to app stores, handling environment configuration, and distributing it to users. Finally, during post-launch iteration, your app development partner will analyze performance data, user feedback, and error tracking to guide ongoing updates and inform roadmap decisions.

This process becomes even more powerful when tailored to the nuances of your user workflows, data ecosystem, and internal systems. Rather than forcing your needs into a one-size-fits-all template, custom app development aligns with your infrastructure and amplifies competitive advantage.

Equally critical is what happens after launch. Post-launch support helps your high-performing app remain stable, secure, and aligned with evolving user expectations. Ongoing maintenance efforts include performance monitoring, OS compatibility updates, bug resolution, and feature enhancements. Prioritize a support strategy from day one to ensure your app continues to deliver value long after it goes live.

Mobile App Development Best Practices

High-performing mobile apps require more than an innovative idea. Their success is shaped by the decisions that follow—choices about architecture, development practices, tooling, and compliance that determine how well your product operates, scales, and endures. The earlier these decisions are made, the better positioned your app is for long-term growth.

Selecting the Right Technology Stack

Your tech stack determines everything from development speed and UI responsiveness to long-term maintainability and integration capabilities.

When choosing between native development (using Swift for iOS or Kotlin for Android) and cross-platform frameworks like Flutter or React Native, consider your project’s specific goals. Native development typically offers superior performance and deeper OS integration, while cross-platform approaches reduce development time and cost by sharing code across platforms.

Advanced technologies can also unlock market differentiation. If your app needs real-time personalization, automated insights, or immersive interfaces, technologies like AR, VR, AI, or blockchain may be essential.

If your roadmap includes support for wearables or embedded devices—like smartwatches, medical sensors, or fitness trackers—your stack must support lightweight architecture and UIs optimized for small screens and low power consumption.

Across all cases, ensure your stack:

  • Aligns with your team’s technical capabilities
  • Supports required integrations (e.g., payment systems, CRMs, IoT platforms)
  • Enables offline functionality, robust security, and actionable analytics

Code Maintenance Best Practices

Maintainable code is the backbone of sustainable app development. A modular, well-documented codebase reduces long-term costs and enables efficient updates as your product evolves. Code maintenance best practices improve reliability and give you the flexibility to scale without starting from scratch.

It’s essential to use version control systems like Git, which allow for detailed commit histories that enhance collaboration and traceability. It’s equally important to modularize features, a practice that makes it easier to fix bugs or deploy improvements without disrupting unrelated parts of the app.

In fast-paced development environments, CI/CD pipelines and automated testing are crucial for catching regressions early and maintaining consistent code quality through rapid release cycles. To support scalability and effective teamwork, especially across distributed teams, prioritize clear documentation. Finally, planning ahead for OS updates, evolving device specs, and changes to third-party libraries ensures the app remains functional and adaptable over time.

Developing for SEO and Accessibility

Mobile apps must be discoverable and prioritize accessibility. That starts with App Store Optimization (ASO) techniques that ensure the title, description, keywords, and screenshots for your product are designed to boost visibility and encourage installs.

It’s equally important to ensure that your app can be used by people with visual, auditory, and fine-motor impairments. Incorporate accessibility features like:

  • Voice navigation and screen reader compatibility
  • Scalable font sizes and high-contrast visuals
  • Alternative input methods for users with fine-motor limitations

Testing with users who rely on assistive technologies helps identify blockers early and avoid compliance issues later. Align your design and development approach with Web Content Accessibility Guidelines (WCAG) and native OS accessibility standards to ensure a seamless experience for every user.

Security and Compliance Best Practices

Security and compliance must be treated as core components of the development process. When users trust your app with sensitive data, protecting that trust is non-negotiable. Building with compliance in mind not only mitigates risk but also strengthens your brand’s reputation.

To start, implement secure authentication, data encryption, and safe API interactions to ensure a strong security baseline and avoid legal and reputational risk. Your app must also remain compliant with relevant regulations, such as GDPR for user privacy, HIPAA for health data, or PCI-DSS for payment processing. If your app involves custom workflows or integrations, work with a team that can design a tailored security architecture aligned with your requirements.

Additionally, perform regular audits of data permissions, SDK usage, and third-party services to ensure you’re not unintentionally exposing user information. Finally, prepare for the unexpected with incident response plans and recovery protocols that can minimize downtime and data exposure in the event of a breach.

What are the Benefits and Challenges of Mobile App Development?

Mobile apps offer businesses a way to create more personalized relationships with their users. They enable faster interactions and more meaningful data capture, and when designed effectively, they can drive new revenue, streamline operations, and increase brand loyalty.

However, building a stable, scalable product isn’t simple. Companies must navigate a wide array of challenges across devices, platforms, and evolving user expectations. Understanding both the advantages and hurdles of mobile app development will help you make better decisions about development partners, technology choices, and long-term investment strategies.

Benefits and Outcomes
Challenges
  • Seamless business integration: Connect your app with internal systems to streamline operations and capture valuable data.
  • Ongoing engagement and retention: Drive loyalty through rewards, subscriptions, and onboarding flows.
  • Personalized app experiences: Offer tailored content and functionality based on user behavior and saved preferences.
  • Real-time user interaction: Enable push notifications, geolocation, and live updates to engage users in the moment.
  • Offline access and native features: Support functions like camera, sensors, and biometrics even without a connection.
  • Cross-platform trade-offs: Prioritizing speed or cost may lead to compromises in performance, consistency, or native functionality.
  • Device and platform fragmentation: Supporting different OS versions, screen sizes, and hardware configurations can complicate development and testing.
  • Maintaining long-term stability: As APIs and security standards evolve, it becomes harder to ensure ongoing app reliability.
  • App store compliance: Approval delays and changing platform rules can slow down release timelines.

Business Applications of Mobile App Development Solutions

Mobile apps are more than just simple utilities. They’re integral components of modern business that create value across nearly every industry. Whether your goal is streamlining internal operations, improving customer engagement, or launching a new offering, professional mobile app services tailor the product to meet your business needs.

  • Retail and e-commerce apps drive revenue by enhancing the customer shopping experience with smoother checkouts, personalized promotions, loyalty programs, and real-time inventory.
  • Healthcare apps extend care and convenience through features like appointment scheduling, patient monitoring, and secure messaging between providers and patients.
  • Finance apps make it easy for users to securely access account management, budgeting tools, transaction history, and customer support.
  • Field operations apps improve workforce efficiency by enabling offline data capture, streamlined dispatch, and real-time reporting from remote job sites.
  • Enterprise apps boost productivity and communication by making team knowledge bases and operational dashboards accessible anytime, anywhere.

Why You Should Invest in Mobile App Development Services

Mobile is where business happens. Users expect seamless, on-the-go experiences, and mobile apps offer a direct path to deeper engagement, operational efficiency, and long-term growth.

A custom-built mobile solution enables your business to meet users where they are, with functionality tailored to their needs and behaviors. An app is more than a product—it’s a core driver of business value. Partnering with an expert-led development company ensures your app is built for scalability, security, and long-term user impact.

From design to deployment and beyond, a strong mobile strategy supports user acquisition, retention, and loyalty to keep you at the forefront of a competitive landscape. With the right mobile development services, your app can be a strategic asset that grows with your business and adapts as the market evolves.

Maximize your business performance with mobile app development services

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