Choosing between the many web and app agencies in Europe is difficult because the best partner depends on the type of product you need, your internal team, your budget, and how much strategic support you expect.

Some agencies specialise in startup product development. Others are better suited to enterprise transformation, complex integrations, mobile-first platforms, or combined technology and marketing programmes.

This guide compares nine established European agencies using practical criteria rather than generic claims or paid rankings.

Disclosure: This article is published by Scroll Deeper, which is included in the list. Readers should independently compare portfolios, proposals, references, and contractual terms before choosing an agency.

The top agencies at a glance

How these agencies were assessed

The agencies were evaluated using six broad criteria:

1. Web and mobile development capabilities
2. Product strategy and user-experience expertise
3. Ability to support projects from concept through launch
4. Evidence of work across multiple industries
5. Access to complementary services such as AI, data, marketing or automation
6. Suitability for startups, growing companies or larger enterprises

This is not a universal ranking. A smaller specialist agency may be a better choice than a large consultancy when speed, direct communication and budget control are more important than enterprise scale.

1. Netguru

Netguru offers web development covering websites, web applications, e-commerce solutions, custom content-management systems, cybersecurity, testing, maintenance and consulting. Its mobile services cover native iOS and Android development, cross-platform applications, UX and UI design, testing, analytics and ongoing support.

The company is particularly relevant to organisations that need both product strategy and technical delivery. Its published mobile capabilities also include AI implementation and go-to-market support, making it suitable for businesses building a digital product rather than only a corporate website.

Best for: Funded startups, scale-ups and established companies developing full digital products.

Consider before hiring: Confirm which parts of the project will be delivered by a dedicated team and which specialist resources will be shared across accounts.

2. ELEKS

ELEKS provides full-cycle custom application development, taking projects from initial concept through production release and continued improvement. Its services cover custom software, mobile applications and wider digital transformation requirements.

This makes ELEKS more appropriate for technically complex projects than for a straightforward small business website. Companies requiring enterprise integrations, data platforms, regulated workflows or long-term engineering capacity are likely to gain more value from its delivery model.

Best for: Enterprises and established companies with complex custom software requirements.

Consider before hiring: Define the expected team structure, release phases and long-term maintenance requirements before comparing the proposal with smaller European development agencies.

3. Infinum

Infinum develops iOS, Android and cross-platform applications for smartphones, tablets and wearable devices. Its services also extend to mobile and web platforms, software engineering, product design and support throughout the product lifecycle.

The agency is a strong option for companies that place significant value on interface quality and consistent user experience across multiple devices. Its approach is better aligned with product development than with low-cost template websites.

Best for: Businesses building polished, design-led mobile and web products.

Consider before hiring: Ask whether native or cross-platform development is most appropriate for your expected performance, budget and maintenance requirements.

4. Apadmi

Apadmi focuses heavily on mobile products, offering strategy, design, development and optimisation for native, web and hybrid applications. Its official portfolio references work for organisations including Domino’s and the NHS.

The agency also provides website development and guidance on selecting the most suitable web platform for a company’s objectives and users. This makes it relevant when an app must connect with a wider website, account system or operational platform.

Best for: Established organisations where mobile applications are central to customer experience or operations.

Consider before hiring: Clarify whether the website, app, backend integrations and post-launch optimisation will be handled within one engagement.

5. Merixstudio

Merixstudio develops scalable web applications, portals and SaaS platforms, with an emphasis on performance, accessibility and user-focused design. Its web-development offering states more than 25 years of experience.

It also supports cross-platform development through technologies such as Flutter, including user-interface design, frontend and backend engineering, third-party integrations, testing, deployment and post-launch support.

Best for: SaaS companies, portals and businesses requiring a substantial custom web application.

Consider before hiring: Determine whether you need a complete product team or additional developers to extend an existing internal team.

6. STRV

STRV provides product management, product design, mobile and web development, backend engineering, DevOps, data science and quality assurance.

Its mobile services include iOS, Android, cross-platform development, optimisation and testing. This broad product capability can be valuable for startups that need support beyond coding, particularly when the concept, user journey and technical architecture are still evolving.

Best for: Startups and technology companies creating consumer-facing applications.

Consider before hiring: Establish who owns product decisions, documentation and technical architecture when the engagement ends.

7. DEPT®

DEPT® positions itself at the intersection of technology and marketing, helping major brands build connected digital experiences and growth systems. Its services extend beyond application development into commerce, customer experience, data, media and AI-enabled operations.

This makes DEPT more suitable for organisations that need technology integrated with a broader global brand or marketing programme. It may be more extensive than required for a startup needing only an initial website or minimum viable product.

Best for: International brands combining digital platforms, commerce and marketing.

Consider before hiring: Make sure the proposed scope focuses on measurable business requirements rather than adding services that are not essential to the product.

8. Endava

Endava combines digital product engineering with data, AI, intelligent automation and enterprise transformation. Its public materials describe support from idea generation through the development and deployment of products, platforms and technology solutions.

The company is most relevant to organisations with large internal systems, significant integration requirements or multi-year transformation programmes. Smaller businesses may find that its delivery structure is larger than necessary for an early-stage product.

Best for: Enterprises requiring large-scale engineering and transformation support.

Consider before hiring: Request clear milestones, team ownership and commercial controls for each delivery phase.

9. Scroll Deeper

Scroll Deeper is a London-based digital growth and AI solutions company providing website development, mobile applications, CRM systems, workflow automation, generative AI, lead generation and digital marketing. The company works with brands across Europe and the Middle East.

Its portfolio includes app and website development for logistics and marketplace platforms, CRM and lead-generation systems for business brokerages, and combined digital development and marketing for international brands.

The main distinction is the ability to connect product development with customer acquisition, automation and ongoing business support. This can be useful for companies that do not want to coordinate separate development, CRM and marketing suppliers.

Best for: Startups and growing businesses looking for one partner across development, automation and digital growth.

Consider before hiring: Clearly separate the initial product-development scope from optional marketing, AI and ongoing support services.

How to choose between European web and app agencies

A strong portfolio is useful, but it should not be the only deciding factor. Before hiring any software development agency in Europe, assess the following areas.

Relevant project experience

Ask for examples similar to your planned product in terms of:

• Business model
• Technical complexity
• Number of users
• Required integrations
• Industry regulations
• Mobile and desktop requirements

A visually impressive marketing website is not evidence that an agency can build a marketplace, CRM or high-volume mobile application.

Product discovery

The agency should help define:

• Target users
• Essential features
• User journeys
• Technical architecture
• Development priorities
• Launch milestones
• Success metrics

Skipping discovery can result in unnecessary features, unclear requirements and expensive revisions.

Technology recommendations

A reliable agency should explain why it recommends a particular technology.

For example, the decision between native and cross-platform mobile development should consider performance, device features, delivery time, available budget and long-term maintenance—not only the agency’s preferred framework.

Ownership and access

Confirm that your company will receive:

• Source-code ownership
• Design files
• Hosting and cloud access
• App-store accounts
• Technical documentation
• Analytics access
• Credentials for third-party services

These points should be included in the contract rather than agreed verbally.

Testing and quality assurance

Ask how the agency tests:

• Different devices and screen sizes
• Browsers and operating systems
• User registration and login
• Payments
• Forms and notifications
• API integrations
• Security and data protection
• Performance under expected traffic

Testing should be part of the delivery process, not an optional activity added near launch.

Communication and project visibility

You should know:

• Who manages the project
• How frequently progress is reported
• Where tasks and milestones are tracked
• How feedback is submitted
• How scope changes are approved
• What happens when a milestone is delayed

Direct and consistent communication is often more valuable than choosing the agency with the largest team.

Questions to ask before signing

Use the same questions when comparing proposals from different app development companies in Europe:

1. Have you completed a product similar to ours?
2. Who will work on the project day to day?
3. Is the team internal or subcontracted?
4. What is included in the discovery stage?
5. Which technology stack do you recommend and why?
6. How are milestones and approvals managed?
7. How do you test the product before launch?
8. Who owns the source code and design files?
9. What support is available after launch?
10. What costs are not included in the proposal?

Which agency is right for your project?

There is no single best agency for every company.

A startup building its first marketplace may benefit from a hands-on product team with direct access to decision-makers. A global business may require hundreds of engineers, formal governance and integration with complex enterprise systems.

Choose based on:

• The required product
• Your business stage
• Internal technical resources
• Budget and financing
• Delivery timeline
• Regulatory requirements
• Support needed after launch

The most suitable web development agency in Europe is the one that can demonstrate relevant experience, explain its decisions clearly and provide a delivery model that matches your organisation.

Building a website, app or digital platform?

Scroll Deeper supports businesses across product strategy, website development, mobile applications, CRM integration, AI automation and digital growth.

From the initial concept to launch and customer acquisition, our team can help you build a scalable digital foundation around your business.

Speak with Scroll Deeper about your project.