// compatibility testing services
Compatibility Testing Services
QACraft's compatibility testing services validate your software across operating systems, devices, hardware and networks — so every user gets a flawless experience, whatever they run it on.
what it is
What Is Compatibility Testing?
Compatibility testing is the practice of verifying that your software works correctly across every environment your users might run it on — different operating systems and versions, device types and screen sizes, hardware configurations and network conditions. It is how you eliminate the "works on my machine" defect: the bug that is invisible on the developer’s setup but very real on a three-year-old Android phone, an older macOS, or a slow connection.
QACraft's compatibility testing services validate your critical flows across an environment matrix built from your real users — Windows, macOS and Linux; Android and iOS versions; screen sizes; and fast, slow and offline networks — on real devices and environments.
This service covers everything beyond the browser. For browser-specific rendering and behaviour across Chrome, Firefox, Safari and Edge, see its sibling — our cross-browser testing services. Both sit under our functional testing umbrella.
our services
Our Compatibility Testing Services
We build compatibility coverage around the environments your users actually run — operating systems, devices, hardware and networks. Most engagements combine several of the services below.
Validate your software across Windows, macOS and Linux — and across the OS versions still in real use, not just the latest.
Phones, tablets, laptops and desktops across vendors and tiers — so the experience holds from flagship to budget hardware.
Confirm new releases still work on the older OS versions your users have not upgraded from, and that upgrades do not break existing installs.
Verify layouts and interactions across resolutions, aspect ratios and pixel densities, from small phones to large desktops.
Behaviour on fast, slow, high-latency, intermittent and offline networks — because connectivity is part of the environment.
Different hardware capabilities, memory, and system configurations, so low-end and unusual setups still work.
Flexible engagement models
A QA pod that owns your compatibility coverage every release, priced by configurations kept green rather than hours.
QA engineers who plug into your existing process and device lab under your leadership — scaled up or down monthly.
One product, one agreed environment matrix, full coverage across OS, device and network — one quote, one report.
tools & frameworks
Tools & Frameworks We Use
Tool choice is decided in Phase 1, against your environment matrix and CI — never by default. Compatibility work spans real-device clouds, VMs and network simulation:
Real desktop OS and mobile-device cloud across Windows, macOS, Android and iOS.
Real-device and VM cloud with parallel runs and CI integration.
On-demand real Android and iOS devices that scale with your pipeline.
Physical phones, tablets and machines for the configurations that matter most.
Windows, macOS and Linux VMs for OS-version and configuration coverage.
Simulated 3G/4G/5G, high-latency, intermittent and offline conditions.
Cross-platform automation for mobile device-matrix coverage.
Compatibility runs wired into Jenkins, GitHub Actions or GitLab CI.
why automate
Why Compatibility Testing Matters
Your users are not all on your machine. They are on old phones, locked-down work laptops, every OS version, and networks that drop. A defect on any common configuration is a user who thinks your product is broken. Here is what compatibility testing changes:
Your software is verified across the real OS/device/network mix your users have — not just the team’s machines.
Configuration-specific defects are caught in QA, where they are cheap, not in a support ticket from a frustrated user.
Coverage of the long tail of devices and OS versions means no real segment gets a broken experience.
Issues that only appear on a specific OS, device tier or hardware capability are surfaced before launch.
Your app is validated on slow, flaky and offline connections, not just fast office wifi.
A full compatibility matrix means a release works everywhere it needs to — no post-launch firefighting.
our process
Our Compatibility Testing Process
Every engagement follows the same disciplined path — and produces a concrete artifact at the end of each phase, so you always know exactly what you are getting.
Define the Environment Matrix
We pull your analytics to build the matrix your users actually run — operating systems, OS versions, device types, screen sizes and network conditions — ranked by reach.
→ artifact: data-driven OS/device/network matrixTest Across Configurations
We run your critical flows across the matrix — Windows/macOS/Linux, Android/iOS versions, screen sizes, and slow/offline networks — on real environments.
→ artifact: per-configuration pass/fail resultsLog Config-Specific Defects
We log issues that only appear on specific configurations — an OS version, a low-end device, a flaky network — with the exact environment and reproduction steps.
→ artifact: config-specific defect reportsAutomate & Re-verify
Stable checks are automated across device clouds and re-run on every release, so a new build is verified across the full matrix before it ships.
→ artifact: automated compatibility suite in CISee the compatibility matrix
A sample run across an OS × device × screen-size matrix — every configuration your users run, lighting up green as each combination passes.
automate it
Automated Compatibility Testing
Compatibility testing means the same flows across many environments — repetitive and broad, which makes it ideal for automation. We automate stable checks across device clouds so every release is re-verified across the matrix in parallel.
AI helps select which configurations a given change is most likely to affect and classify config-specific failures as real vs flaky — with a QA engineer reviewing the verdict. See our automation and mobile automation services.
industries
Industries We Serve
We provide compatibility testing for teams across high-reach industries, where the diversity of users’ devices and networks is exactly the risk.
why us
Why Choose QACraft for Compatibility Testing
Teams choose QACraft when they want QA engineers who own outcomes — not a body shop billing hours.
High-traffic configurations are verified on real devices and machines, where config-specific bugs actually live.
The compatibility suite, automation and CI config live in your repository from day one. No black boxes, no lock-in.
We test the OS/device/network combinations your users actually run — meaningful coverage, not an arbitrary checklist.
We move in days, not quarters — typically an environment matrix in the first week and first results soon after.
Embed a dedicated pod, augment your team, or take a fixed-scope compatibility pass — scaled to your needs.
Compatibility connects to your functional, cross-browser and mobile testing under one team — joined-up, not stitched together.
straight answers
Frequently Asked Questions
What is compatibility testing?
Compatibility testing verifies that your software works correctly across the full range of environments your users have — operating systems (Windows, macOS, Linux), devices, OS versions, screen sizes, hardware and network conditions. It catches the "works on my machine" defects that only appear on a specific setup.
What's the difference between compatibility and cross-browser testing?
Compatibility testing is the broad picture — operating systems, devices, hardware, screen sizes and networks. Cross-browser testing is the browser-specific slice of it: rendering and behaviour across Chrome, Firefox, Safari and Edge. If your concern is specifically browsers, that is the sibling service; this page covers everything beyond it.
Which operating systems and devices do you cover?
Windows, macOS and Linux on desktop; Android and iOS across the versions and device tiers in use; plus the screen sizes and hardware classes your users actually run. The exact matrix is built from your analytics in Phase 1, not from an arbitrary list.
Do you test on real devices or emulators and VMs?
Both, deliberately. High-traffic configurations are verified on real hardware where sensors, performance and OS skins matter; emulators, simulators and VMs extend coverage to the long tail of versions cost-effectively.
Do you test under different network conditions?
Yes. We validate behaviour on fast and slow connections, high-latency and intermittent networks, and offline states — because an app that works on office wifi can fall apart on 3G or in a tunnel.
How do you decide which configurations to cover?
By real usage data, not guesswork. We prioritise the OS/device/network combinations your analytics show your users on, cover the high-traffic ones on real environments, and use device clouds for the long tail — so coverage is meaningful without testing infinite combinations.
Ready to work flawlessly on every setup?
Build your plan in 60 seconds — or bring your software to a 30-minute call and leave with an OS/device coverage matrix and a single number.