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Our Service

Software Testing and QA Company for US Businesses

We test web and mobile applications for US companies, catching bugs before your users do with manual and automated testing, accessibility checks and performance testing.

What We Offer

Manual and Automated Testing for US Products

We provide software testing and QA services for US businesses, helping product teams release web and mobile apps with fewer bugs and more confidence. We can own QA for a whole product or join your existing team, writing test plans, running manual and exploratory tests, and building automated test suites that run in your CI pipeline. US users expect apps to work on the latest iPhones and browsers, load quickly under traffic peaks and be usable by everyone. Our testing covers all three, not only whether features work. Because we also build software, our testers understand how bugs happen and report them in a way developers can fix quickly.

Testing & QA Services
Automation Testing
Manual Testing
Performance Testing
Security Testing
Mobile App Testing
API & Web Services Testing
Cross-Browser Testing
QA Consulting & Test Strategy

We provide software testing and QA services for US businesses, helping product teams release web and mobile apps with fewer bugs and more confidence. We can own QA for a whole product or join your existing team, writing test plans, running manual and exploratory tests, and building automated test suites that run in your CI pipeline. US users expect apps to work on the latest iPhones and browsers, load quickly under traffic peaks and be usable by everyone. Our testing covers all three, not only whether features work. Because we also build software, our testers understand how bugs happen and report them in a way developers can fix quickly.

Our Technology Stack

Technologies and Framework we use

We leverage the best-in-class technologies and modern frameworks to build scalable, secure, and high performance digital solutions

For USA Clients

QA Built Around US User Expectations

Testing for the US market means more than checking that features work. We test the devices, accessibility needs and release pace that American products depend on.

Devices

Tested on the Devices US Users Own

iPhone usage is high in the US, so we test on current iOS versions and Safari alongside Android, Chrome and Edge, on real devices and cloud device labs.

Accessibility

WCAG and ADA Accessibility Testing

Automated scans plus manual checks with VoiceOver, NVDA and keyboard only navigation, with clear reports that map each issue to the WCAG 2.1 AA guideline it fails.

Release Speed

Test Results Ready by Your Morning

Our working hours fall during the US night, so builds shipped at the end of your day are tested and reported before your team starts the next one.

Products We Have Built and Tested for US Clients

A selection of the US products our team has developed and tested end to end before launch.

Sigo Seguros bilingual insurance platform for a US client

Insurance

Sigo Seguros

A bilingual insurance platform with dynamic quote flows, tested across English and Spanish journeys and every question path.

View Project
Claim Cow insurance claims platform for a US client

Insurance Claims

Claim Cow

A claims management platform where each automated step and status update was tested for accuracy and reliability.

View Project
Little Bear Smocks shopping app for a US client

Ecommerce App

Little Bear Smocks

A native shopping app for a children's apparel brand, tested from product browsing through checkout on iOS and Android.

View Project

Our Testing & QA Process

We follow a systematic and comprehensive testing process that ensures complete test coverage, early defect detection, and continuous quality improvement.

1
Test Planning & Analysis

Analyze requirements, define test objectives, scope, and strategy. Create comprehensive test plans, identify test scenarios, and establish success criteria.

2
Test Case Development

Design detailed test cases, create test scripts, develop automation frameworks, and prepare test data and environments for execution.

3
Test Execution & Monitoring

Execute manual and automated tests, perform different testing types, monitor test progress, and document results systematically.

4
Defect Management & Reporting

Log, track, prioritize, and manage defects. Generate comprehensive test reports, metrics, and provide status updates to stakeholders.

5
Test Closure & Knowledge Transfer

Conduct test closure activities, document lessons learned, provide test summary reports, and transfer knowledge to client teams.

FAQs

Frequently Asked Questions

Answers to common questions about our Testing & QA services for businesses in the USA.

Testing & QA FAQ Image
How much do software testing services cost for a US business?
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It depends on the size of the app, platforms and how much automation you need. After a short review, we share a fixed or monthly estimate in USD.

Which test automation tools do you use?
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Mainly Playwright, Cypress and Selenium for web, Appium for mobile, Postman for APIs and JMeter or k6 for load testing.

Can you test an app that another company built?
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Yes. We start with an audit of the current app, then set up test plans and automation without needing to change your code.

Do you perform security testing?
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Yes. We test against the OWASP Top 10, check authentication and access control, and report issues by severity with steps to fix them.

Can your QA team work inside our sprints and tools?
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Yes. We work in your Jira, Slack and CI pipeline, join sprint ceremonies and share daily test reports.

Let's Work Together

Why Clients Choose Zillion

We combine technology, creativity, and strategy to deliver web solutions that drive real business results.

98%
Client Satisfaction

Our clients trust us for timely delivery, clear communication, and exceptional results.

15+
Projects Delivered

We have successfully delivered complex digital solutions across various industries.

5+
Countries Served

Our solutions power businesses in the US, UK, UAE, India and many more countries.

4+
Years of Excellence

Years of experience in delivering scalable, secure, and future-ready digital solutions.

Start Your Project

Have an idea or a project in mind?
Let's connect and turn it into a powerful digital solution.

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