Custom mobile app development services aligned with your business goals

Our tailored approach to mobile app development focuses on understanding your business goals, target audience’s needs, technical requirements, and resource constraints to find the most suitable platform strategy just for you.

Mobile responsive
web apps

Sometimes, optimising a web application for mobile devices is what your business needs. Our mobile responsive web development service ensures your app offers a consistent experience across various screens, leveraging responsive design principles to adapt to different device sizes and resolutions. This approach eliminates the complexities and costs associated with full-scale app development while maintaining a seamless user experience.

  • HTML

  • CSS

  • JavaScript

  • TypeScript

Cross-platform app
development

When you need to deploy your app to both Android and iOS platforms but have a tight budget, our cross-platform mobile app development services are the solution. By utilising powerful, flexible frameworks, we enable testing of your app concept across multiple mobile platforms, eliminating the need for immediate native development. This approach not only saves time and resources but also ensures your app reaches a wider audience without compromising on performance.

  • Flutter

  • Xamarin

  • React Native

Native app
development

Want to transform your mobile app with advanced functionalities? Our native Android and iOS app development services help you leverage the full capabilities of each platform, ensuring your app delivers a seamless and integrated user experience. By using platform-specific languages, we can create highly optimised apps that perform exceptionally well, providing users with a smooth and responsive interface. Our team has extensive experience with first party app development tools, including official SDKs.

  • Kotlin

  • Java

  • Swift

  • Objective-C

Designed to impress and deliver

We craft exceptional UI/UX that follow best design practices to enhance user interaction, boost user satisfaction and drive engagement, directly contributing to improved business results.

check

User-centred
design

Our user-centred design philosophy results in an app that meets user expectations and achieves higher user satisfaction.


  • Identifying target user needs & context

  • Mapping user journeys

  • Conducting iterative design processes

  • Performing early usability tests

check

Adherence to
platform guidelines

Our design processes adhere to industry standards such as Apple’s HIG and Google’s Material Design guidelines to ensure enhanced usability.


  • Ensuring intuitive navigation

  • Maintaining consistent design elements

  • Facilitating touch-friendly interactions

  • Optimising forms & inputs

check

Custom UI
components

For apps that require specialised functionalities, we design custom UI elements to deliver tailored interfaces according to your business requirements.


  • Upholding branding consistency

  • Unifying visual consistency across platforms

  • Adapting to device features

  • Optimising performance

check

Accessibility
features

Our mobile app design is inclusive, ensuring the navigation is accessible to users with disabilities, including those who use screen readers.


  • Adhering to iOS VoiceOver standards

  • Complying with Android TalkBack requirements

  • Ensuring screen reader compatibility

  • Supporting dynamic text size

Smooth performance on any platform or device

GoodCore follows the best practices in terms of code quality, and quality assurance, delivering optimal functionality on iOS and Android platforms. By following industry standards and rigorous testing protocols, we strategically mitigate app store rejection risks, ensuring smooth and successful app releases.

check

Adherence to
platform-specific guidelines

check

iPad and Android
tablet-specific optimisation

check

Optimised graphics &
lightweight design elements

check

Device-specific
functionalities

check

Extensive compatibility with
Android and iOS devices

check

Optimisation for the
latest OS versions

check

Rigorous
performance testing

check

Regular
feature updates

check

Framework & integration upgrades

End-to-end mobile app mastery

Experience a smooth journey from concept to launch with our end-to-end mobile app development services. We handle everything, from strategy and planning to development, testing, and app store release, ensuring a stress-free and timely delivery. Our development process covers the essential design principles for creating successful apps; clutter-free screens, reduction of cognitive load, simple navigation, notifications, speed appearance, and usability.

Stage

Activities

Strategy consulting

We work with you to understand your app goals and requirements, helping solidify the concept and advising on the most efficient mobile development strategy. By leveraging insights from user research and industry best practices, we ensure your app is built on a solid foundation.

  • Requirements analysis

  • Existing solution and documentation audit

  • Platform selection consulting

  • Monetisation strategy consulting

  • Technology advisory

Planning

We then align your mobile app development goals with resource limitations, establishing delivery schedules and optimising resource allocation. This phase ensures that your project stays on track and within budget by addressing potential challenges proactively.

  • Feature scoping

  • Budgeting and resource planning

  • Risk analysis and risk management plan design

  • Strategic road mapping

Agile design

We develop your mobile app using rapid prototyping and early testing to align the application’s UX with user expectations, streamlining development. This process allows for continuous feedback and improvements to ensure the final product meets user needs effectively.

  • Product wireframing and prototyping

  • UI/UX design

  • Solution architecture (front-end and back-end)

  • API design

  • Database design

Mobile app development

Working in two-week sprints, we implement your app’s functionality in small increments. Ongoing revisions ensure the app meets the defined requirements. This approach maintains clean code, and allows for scalability without compromising performance, for a more robust, efficient mobile app.

  • Front-end and back-end development

  • API integration

  • Infrastructure set-up

  • Automated code deployment

  • Unit testing

Testing and QA

Our testing team ensures your app meets app store guidelines and submission requirements (including the Apple App Store and Google Play Store), delivering a reliable experience across devices and scenarios. This rigorous performance testing and quality assurance approach identifies and fixes issues early, to ensure a smooth user experience.

  • Device compatibility testing

  • Usability and UI testing

  • Performance testing

  • Security testing

  • Regression testing

App release

The next step is to get the app store approval and get your mobile app published on major app stores without rejections or delays. Here's how we assist you:

  • Pre-submission review

  • Preparing product documentation

  • Communication with app store review teams

  • Resolving rejections

  • Knowledge transfer

Post release support

Once the app is released, we proactively monitor the app's performance and address any issues promptly. We help with the following:

  • Monitoring performance

  • Releasing new features

  • Providing bug fixes and security updates

Assemble your mobile app development A-team

If you're looking for custom mobile application development services in London and beyond that deliver speed, cost-effectiveness, and a user-centric approach, we’re here for you. Send us your project details, and we’ll deliver our winning game plan.

Value for money—clients’ feedback about our application development services

I had this app idea in my head for years and GoodCore turned what was in my mind into what should be in my hands. They committed to a fixed-price project in a timeframe and delivered the product way beyond my expectations.

Zack Fortune

Zac Fortune, CEO,

Pick10

profile

Their project manager was very skilled and experienced. He ensured that the requirements for the mobile app were well understood and documented. Their lead developer was great at large-scale mobile app design and this was key to a successful delivery.

Mohamad Halizan

Mohamad Halizan Harith, CEO,

Nissen Technology 

profile

I was looking for honesty, transparency, and great pricing in a partner, and I found that with GoodCore. The platform came out better than I had envisioned and works perfectly. The team has exceeded my expectations at every level and on every metric.

Scott Gardiner

Scott Gardiner, Founder & CEO,

HireVine

profile

My experience has been highly collaborative, and I think that a client couldn’t ask for anything better. Lots of developers can produce an app, but GoodCore is a dependable partner for any client whose business relies on complex software.

Tracey-Walton

Tracey Walton, Managing Director,

Weight Loss Resources Ltd

profile

Frequently asked questions

The cost of mobile app development services in the UK varies depending on factors like complexity, design requirements, features and platform. A basic mobile application can start from £25,000, while apps with advanced features or extensive 3rd party integrations can cost significantly more.

Factors such as the level of customisation, use of native or cross-platform development frameworks, and the integration of additional services (such as cloud storage or payment gateways) also influence the cost. We offer a detailed consultation to understand your needs and provide a transparent quotation with no hidden costs.

Security is paramount in our mobile app development process, and our developers address it through a multi-layered approach:

  • Adherence to platform guidelines: we strictly adhere to the security guidelines and best practices of iOS and Android apps platforms, ensuring compliance and protecting user data.
  • Secure data storage: we implement robust encryption and secure data storage methods to safeguard sensitive information both in the app and during data transmission.
  • High code quality: our mobile app developers follow secure coding practices to prevent vulnerabilities with regular code reviews and quality checks to maintain high standards.
  • Secure API communication: we ensure secure and encrypted communication between the app and any APIs or servers, protecting data in transit.
  • Vulnerability testing: we conduct comprehensive vulnerability assessments and penetration testing to proactively address security issues, ensuring a reliable and secure app.

Our bespoke software development services include support for mobile app submission and release. We help with the following:

  • Creating a developer account: we set up and verify a developer account. If you already have an existing account on the Apple App Store or Google Play Store, we use that. 
  • Preparing store listings: we assist you in creating app descriptions, uploading graphic assets, and optimising with relevant keywords to increase discoverability.
  • Addressing possible issues: If there are any issues or rejections, our mobile app developers quickly address and resolve them, making necessary modifications to comply with app store guidelines.

There are 3 options which you can choose from:

  • Fixed cost/fixed scope model: ideal if you have well-defined requirements for your mobile application development project.
  • Dedicated team model: suitable if your project requirements may change over time or you will need to hire mobile app developers for multiple projects.
  • Staff augmentation: if you want to bridge skill or capacity gaps in your existing in-house team without the need for expensive recruiting.

For a more detailed comparison of these models, you can visit our engagement options page.

Native mobile app development requires developing multiple versions of the app for different operating systems (like iOS and Android), each with its own set of front end development tools, languages, and expertise. This approach means you are essentially building and maintaining two separate iOS and Android apps.

On the other hand, cross-platform development tools allow for a single codebase to be used across multiple operating systems, reducing development time and costs. However, cross-platform apps might come with some trade-offs in terms of leveraging device-specific hardware features.

We always strive to delve into your specific business needs at the beginning of our collaboration to be able to suggest the best mobile app development platform based on your long and short-term goals and resource constraints.

The structure of our project teams depends on the complexity and specific requirements of your mobile application. Generally, a project team may include:

  • A project manager: oversees the project, ensuring that your vision and goals are effectively met.
  • UI/UX designers: designs the visual and interactive elements of the app.
  • Mobile app developers: the number varies depending on whether the project is for a single platform or cross-platform, and the complexity of the app features.
  • QA engineers: they ensure the app is thoroughly tested and free from bugs.
  • Backend developers: included for apps requiring server-side functionality.

This team composition can be scaled up or down based on the size and complexity of your app project.

While our software development company does not directly provide App Store optimisation (ASO) services, we help you prepare essential documentation and media for your app. Our team ensures that all the materials align with ASO best practices, providing a solid foundation for you to collaborate with specialised ASO professionals to maximise your app's reach.

To get started, simply reach out to us by filling out the form below for an initial, no-obligation consultation. During this discussion, we'll understand your project vision and requirements. Our team will analyse your needs and prepare a detailed proposal, including a timeline and quote. Once you're ready to proceed, we'll formalise our agreement and introduce you to the team that will build your mobile app.

Smoothly navigate mobile app development

Leverage our intelligent strategies, streamlined development processes, and robust quality assurance practices to secure the long-term success and durability of your mobile apps.

    Seeking digital excellence?

    Tell us your project vision and receive expert insights, practical feedback, and suitable engagement options from our leadership.

    By submitting this form, you agree to GoodCore Software Privacy Policy

    19+ years

    of experience crafting exceptional software

    6.8 years

    clients spend with us on average

    100+

    successful projects for startups and enterprises


    Check Mark
    NDA Included

    Strict adherence to confidentiality

    Check Mark
    IP rights secured

    Intellectual Property belongs to you


    Got questions?
    Want to talk to us?
    020 8781 6903
    Want to join our team?