Regression testing services
Your engineers build. We re-verify.
Outsource regression testing services to QA engineers who re-verify every release across your web, mobile, and AI products on 5,000+ real devices. Automated and manual coverage, fully managed and ISTQB certified.
Trusted by Fortune 500 companies across the globe since 2011
What we cover
Full regression coverage
From a single automated suite to full-stack regression across your whole product, on every platform your customers use.
Framework-based suites that re-run on every commit through your CI/CD pipeline and cut regression from days to minutes.Learn more
Human-driven checks on 5,000+ real devices that catch the visual and usability regressions scripts miss.Learn more
Pixel and layout comparison so a new change never quietly breaks an existing screen.
UI, flow, and cross-browser coverage that protects the experience your users see.
API, database, and integration checks that protect the logic and data underneath.
Confirmation that every existing feature still behaves exactly as expected after each release.Learn more
What you get
Every release, regression-proof
Hand your regression testing to an ISTQB-certified team that builds and maintains your regression suite, re-runs it on every release, and tells you exactly what changed before your users find out.
Release on schedule
Automated regression re-runs in minutes, so new features never wait on a manual test pass.
Catch breaks before users do
Full manual and automated coverage across 5,000+ real devices and every platform your users touch.
Spend less
Up to 70% faster testing cycles, with a certified team and AI that scales on demand.
See what a regression-proof release schedule looks like for your product.
Proven impact
The numbers leadership cares about
The business case for regression testing is the numbers your leadership already tracks: faster releases, lower cost, and fewer incidents in production.
Up to
70%
faster testing cycles so releases stop waiting on QA.
Up to
40%
lower QA cost versus staffing regression in-house.
Up to
100x
cheaper to catch a regression before production than after.
Success story
Supporting Tuul in delivering reliable mobile and IoT releases
We built Tuul's regression suite from scratch and wired QA into their release process, giving the electric micro-mobility company bug-free releases across 50+ iOS and Android device combinations.
Social media
TestDevLab has gone above and beyond in helping us benchmark our application. Their investigative and meticulous approach ensures we're covering all of the bases, providing detailed bug reports and performance metrics that help us make better decisions for our product. Their responsiveness and technical expertise is a great asset to our team.
Sterling Li
Engineering Manager, Video Platform
Communications
TestDevLab has been helping us with audio and video call benchmarking and automating those scenarios. With our ever-increasing need for new tests, TestDevLab has provided us with the best and most efficient quality assurance services.
Xinhong Yuan
Engineering Manager
Automated vs manual regression testing
You need both. We do both.
Automated regression testing services give you speed and repeatability. Manual regression testing services catch what scripts cannot. Here is when each earns its place in your suite.
| Scenario | Automated | Manual |
|---|---|---|
Repetitive checks that run on every build | Yes | No |
Broad coverage of stable, well-understood features | Yes | No |
Large suites under tight release deadlines | Yes | No |
New or frequently changing UI | No | Yes |
Visual, layout, and usability regressions | No | Yes |
Exploratory checks around a risky change | No | Yes |
Critical user journeys before a major release | Yes | Yes |
A strong regression strategy is hybrid. We build the automation that scales and run the manual passes that protect what automation misses.
Frontend & Backend
Validate front-end & back-end environments
Eliminate regressions across your entire application stack. Regressions don't respect boundaries and can break user flows on the frontend or corrupt core logic in the backend. We validate both layers together, so polished user interfaces never sit on unstable foundations.
Frontend regression testing
Protect front-end experiences and ensure interfaces remain intuitive, responsive, and visually consistent after updates. No broken flows, no layout surprises, no silent UX regressions slipping into production.
What we validate
- UI flows and navigation paths
- Form validation and error handling
- Responsive behavior across screen sizes
- Cross-browser rendering consistency
- Visual regression detection
- Third-party integration widgets
- Accessibility standards (WCAG)
Backend regression testing
Keep the systems powering your product stable as they evolve. Verify that data, integrations, and business logic behave as expected, ensuring new changes never compromise performance, accuracy, or security.
What we validate
- REST/GraphQL API contracts and responses
- Database query integrity and performance
- Business logic and calculations
- Third-party service integrations
- File processing and data transformations
- Authentication and authorization flows
- Background jobs and scheduled tasks
Our process
Risk-based by design
A proven process that puts testing effort where a break would hurt most, then keeps it running as your product grows.
Analyze impact
We map what your change touches and where regressions are most likely to surface.
Prioritize by risk
Critical paths, recently changed areas, and historically fragile features go first.
Build and automate the suite
We create maintainable automated coverage and wire it into your CI/CD pipeline.
Run on every release
Automated regression on every build, plus targeted manual passes before major releases.
Maintain and report
We keep the suite current as features evolve and report clearly on what passed, what broke, and why.
Modernizing a legacy system? A solid regression suite is often the first thing that needs rebuilding. See how we approach legacy software testing.
AI-augmented regression testing
Run the right tests, not all the tests
Running every regression test every time isn't a strategy, it's a delay. AI-augmented regression testing maps code changes to the tests that actually matter, cuts cycle time substantially, and flags the high-risk areas most likely to break.
Impact-based test selection
AI maps each code change to the tests most likely to catch a regression, so high-impact tests run first.
Shorter cycles, same confidence
Risk-ranked execution cuts cycle time by 50–70%, without sacrificing the coverage that matters.
Risk flagged before it ships
High-risk change areas identified in the pipeline, not discovered by users in production.
Tools & tech
Regression testing services built on your stack
No rip-and-replace. We build regression coverage on proven frameworks (or the ones you use) and plug straight into your pipeline.
Representative tooling
Web and mobile automation:
API and performance tooling:
CI/CD integration:
CI/CD
AI-assisted maintenance
We use AI to speed test creation and keep suites self-healing and stable as your product changes.
Partner with TestDevLab
A regression testing company that cares about your success
"A regression suite is only as valuable as your confidence to ship on top of it. We build and maintain regression coverage that runs on every commit, so your team ships new features without breaking the ones your customers already rely on. That is the whole point: move fast, and keep what already works."
Director of Quality Assurance, TestDevLab
- 500+
- QA experts
- 5000+
- real devices
- 14
- years in QA
- 95.6%
- client retention
Engagement models
Work with us your way
Every team's QA needs are different, and they shift as you grow. Start with the model that fits where you are now, then scale up, switch, or blend approaches as your product and roadmap evolve.
Dedicated regression team
A stable, product-embedded team that owns your regression suite as your in-house QA would.
Managed regression testing
We own the full regression cycle end to end, from strategy and automation to reporting.
QA staff augmentation
Add certified regression testers to your existing team to cover spikes, specialties, or gaps.
Project-based regression
Defined scope and fixed timeline for a release, migration, or one-off regression pass.
FAQ
Questions we get about our regression testing services
Regression testing is the practice of re-running tests on existing features after a code change to confirm that new work has not broken anything that already worked. It combines automated regression testing, which re-verifies known behavior quickly on every build, with manual regression testing, which catches the visual and usability issues scripts miss.
After every meaningful code change, before each release, and whenever you fix a bug, add a feature, or update a dependency or integration. We automate the core suite to run on every build in CI/CD and add targeted manual passes before major releases.
Both. Automated regression handles speed, repeatability, and broad coverage; manual regression catches visual, usability, and exploratory issues scripts miss.
No. Smoke testing is a fast sanity check that a new build runs at all; regression testing is a deeper re-check that existing features still work after a change.
We prioritize by risk: critical user paths, recently changed areas, and historically fragile features first.
A regression caught in testing costs a fraction of one caught in production, where fixes can cost up to 100 times more, and automation frees your engineers to build instead of re-testing by hand.
It depends on scope, engagement model, and automation coverage, but outsourcing is almost always lower than staffing a full regression team in-house.
Yes, as a dedicated team, fully managed regression, or staff augmentation, inside your existing pipeline and cadence.
Usually within days, typically beginning with a short scoped engagement so you can validate our work before scaling.
Ship your next release without regressions
Regression testing services that catch what changed, protects what didn't, and gives your team the confidence to ship without re-checking everything by hand.