Performance Testing Services

Want to keep your product's performance up to the highest standard? Relevant can provide performance testing services to ensure its speed, responsiveness, and stability under a workload.

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Client testimonials

«We now have a core team of engineers at Relevant who work for us full-time and are supplemented by 4 or 5 engineers with different skillsets when and if required.»

Paul Carse
CTO and Co-founder of Life Moments

“Working with you guys has been fantastic. The level of expertise of your development team is as good as the people that we get in the UK. You’ve got a fantastic talent base of programmers. It’s more challenging to find people of that quality in the UK.”

Cassian Harrison
Co-founder of Splink Industries and My Theory Test App by James May
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Performance testing services we provide

Load testing

As part of performance testing services, load testing lets you see how different amounts of simulated demand (load) impact your product's responsiveness and functionality.

Stress testing

Stress testing helps determine if your mobile or web app can maintain a particular level of performance under unusual, unfavorable conditions.

Scalability testing

This type of performance testing checks your app's ability to perform as the number of user requests spikes up or falls down.

Stability testing

This is a non-functional type of performance testing that allows you to see if your web or mobile app can run smoothly within a given period of time.

We also provide:
  • • QA Testing
  • • Application Testing Services
  • • Web Application Services
  • • Manual Testing Services
  • • Automated Testing Services
  • • Outsourcing Testing
  • • Functional Testing
  • • Cloud Testing
  • • Software Testing Consulting
  • • Healthcare Software Consulting
  • • Mobile App Penetration Testing

Why is Relevant a good choice for performance testing services?


Agile Methodology

Our performance testing company applies the Agile framework to plan and allocate the workflow among our teammates. This allows us to stay productive and provide high-quality results.


Dedicated Project Manager

As part of our performance and load testing services, we assign a project manager who will work only on your product. This professional will ensure a well-organized workflow and timely project completion.


80% Employee Retention Rate

Our specialists enjoy comfortable working conditions and a friendly environment. Hence, they are motivated and ready to take on new tasks and projects.


9/10 Client Satisfaction Score

We take care of our clients and ensure complete transparency in communication. Our customer-centric approach is among the crucial factors allowing us to build trust and boost the number of recurring clients.


92% Of Senior and Middle Engineers

We cooperate with the top professionals worldwide to ensure the best quality of all our software performance testing services.


Risk Handling

Our team can handle and prevent various risks your product might face after the release. We use advanced testing tools and frameworks to diminish any chance of bugs or system flaws.

Success cases

My Theory Test app by James May
Building #1 driving app in the UK
View case
Reducing paperwork for construction companies
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Optimizing the service industry's tipping process
United States
View case


What is performance testing?

Performance testing as a service is a QA practice focused on improving your mobile or web app's responsiveness, stability, and efficiency, whatever demand volume or conditions it might face. It's a complex test set that includes scalability, stability, stress, and load checks. This is an essential part of any product testing as it helps detect and prevent flaws in your solution's efficiency. As a result, you'll get a stable, responsive application.

What should you check via performance tests?

Performance testing usually includes a standardized set of QA practices to ensure the highest quality of your future web or mobile app. This type of testing includes volume, scalability, endurance, spike, stress, and load checks. In other words, you check how your solution performs under different conditions with the same system configurations.

What key elements should you consider while testing performance?

There are multiple factors you should take into account while running performance tests. The main ones include processor usage, memory use, thread counts, CPU interrupts per second, bandwidth, disk time, response time, throughput, and others.

What are the performance test case examples?

Some of the most obvious examples of performance testing cases are: 

  • Checking the maximum amount of users an app can handle before it crashes
  • Verification of the app's response time under low, moderate, heavy, and normal load conditions
  • Defining the database execution time when a given number of records is written at the same time
What are the most common performance issues?

The most popular issues relate to poor scalability, load and response time, and speed. Another common issue you might face while running performance tests is bottlenecking. This is a system obstruction that affects the overall efficiency of the system. The list of bottlenecks includes disk usage, OS limitations, network, memory, and CPU utilization.

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Do you know that we helped 200+ companies build web/mobile apps and scale dev teams?

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