• EnglishEN
  • FrenchFR
  • GermanDE
  • SpanishES
  • NorwegianNO
  • SwedishSV
  • FinnishFI
  • DanishDA
  • LatvianLV
Contact us
services

Functional Testing Services

Functional testing is like a foundation for a successful application. Let's build this foundation together and ensure you deliver good quality experiences to your clients.

Get in touch
A QA engineer working with 4 mobile phones on the desk, with one placed in a tripod.

Join the group of Startups & Fortune 500 companies that care about quality.

  • Discord
  • Twilio
  • Microsoft
  • Zoom
  • Pinterest
We can help

Achieve the balance in software testing

Functional testing demands a balance between manual testing and test automation. One can help with fresh insights and edge-case coverage, while the other - long-term efficiency.

Two QA engineers sitting at the office, working with their laptops.

Test Automation

Technologies evolve, and so do test automation capabilities. With the right tools and 10+ years of experience, we can help you get the most out of those capabilities by streamlining your functional testing activities.

Learn more

Manual testing

Although test automation comes with considerable benefits in the long run, not everything can or should be automated. In those cases, we utilize our manual testing expertise and help you take advantage of that.

Learn more
Testing levels

Comprehensive coverage

Our functional testing services span across various software testing levels to ensure software integrity throughout the software development lifecycle.

Integration testing is the very first stage where we get our hands on software for the very first time. With a close collaboration with development teams, we look for issues that can arise due to independent component integrations.

An open office space with multiple people sitting at their desks and working on laptops.
A QA engineer working on a project with a laptop.
Platforms covered

Equal quality across all platforms

Ensure your application delivers smooth and quality user experiences for all of your users, no matter how they access and use your solution. Let it be web, mobile, desktop, VR, or cross-platform, we cover them all.

Hands-on experience with:

FAQ

Most popular questions answered

Functional testing is a type of software testing that focuses on verifying whether the application's features and functions behave as intended. It involves checking inputs and outputs, user interactions, and how the software responds under various scenarios. The goal is to validate that the system performs according to business and functional requirements, ensuring that all user-facing and backend processes work correctly.
Functional testing is critical because it helps identify defects before your users do. It ensures the software performs key operations accurately and meets business requirements. By validating each function of the application, you reduce the risk of bugs in production, improve user satisfaction, and maintain the overall quality of your product. Functional testing also supports regulatory and contractual compliance, where software behavior must meet specific standards.
TestDevLab offers a wide range of functional testing services to cover different stages and components of your software. These include unit testing (verifying individual code components), integration testing (ensuring modules work together), system testing (evaluating the entire application), regression testing (checking that updates don't break existing functionality), and user acceptance testing (validating the product meets end-user expectations). We can deliver these services manually or through automation, depending on your project needs.
Yes, many functional tests can and should be automated, especially those that are repetitive or need to run frequently. We use modern automation frameworks like Selenium, Appium, Playwright, Cypress, and others to build scalable test suites. Automation helps improve test coverage, accelerates testing during continuous integration, and reduces manual workload, making it easier to maintain high quality even as your application evolves rapidly.
Functional tests should be run throughout the development lifecycle. Initially, they help verify new features after implementation. As the product grows, they become part of your regression suite to ensure existing functionality remains stable. Before any major release, thorough functional testing is essential to catch last-minute issues. In agile development, we recommend running tests after each sprint and integrating them into your CI/CD pipeline for continuous quality assurance.
Ready to get started?

Test your solution better. Faster. Together.

Test your solution faster and more thoroughly by working with quality assurance experts who will help you develop a testing solution tailored to your needs.

Contact us