Your app runs fine on every device you own. Your users have the other 10,000.

That's where the worst bugs hide, and most teams still catch them by hand. Mobile test automation never paid off: too costly to build, too brittle to keep, and split across separate iOS, Android, web and API testers. Mobile testing with Thunders changes the math. Describe the flow in plain language, and it generates, runs, and self-heals your iOS and Android tests on real devices, no script.

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Side-by-side comparison of a manual Appium test script that breaks on the next OS update versus a Thunders test described in plain language, running automatically on iOS and Android and self-healing on UI change

What is mobile app test automation?

Mobile app test automation runs your app's real user journeys onboarding, login, checkout, account settings as repeatable tests on iOS and Android, instead of a QA team re-tapping them by hand every release. Most of the work is regression testing: proving that this build still works on the device and OS combinations your users actually carry. Traditionally that meant Appium scripts, an engineer to maintain them and a device lab to run them on. Thunders generates the test from a plain-language description of the flow, runs it across device configurations, and repairs it when the UI or the OS changes.

It's time mobile test automation got the love it deserves

Automating mobile meant scripts, engineers, and a device lab, and the tests still broke on the next OS update. So most teams did the math and kept testing by hand: whole QA teams re-running the same flows every release, on a fraction of the devices their users actually carry. Slow, expensive, and it still misses the one device where your app falls over.


And the pressure keeps rising. Apple rejected 1.35 million submissions in 2025 because the app didn't work properly as submitted, one every 23 seconds, while releases per app have climbed 22% since 2022. More releases, same manual capacity. (Sources: Apple App Store Transparency Reports 2022–2025.)

Thunders removes that tax. Describe the flow, and it does the rest.

Line chart showing mobile release pressure rising 22% since 2022, with teams shipping more releases per app on the same manual testing capacity

Your app works on your device. Fifty other configurations go untested.

Without Thunders
QA is split across six teams: iOS, Android, web, API automation, manual testers and device procurement.
  • Manual QA re-testing the same flows on every release
  • Device fragmentation coverage stays incomplete by default
  • Tests written for one OS version break on the next
  • No time left for edge cases, gestures or real user behaviour
  • Web, mobile and API each tested in a separate tool, by a separate person
Thunders Logo
With Thunders
One team. One language. Every surface.
  • Tests generated from natural language, no scripting and no SDK
  • One test spans web, mobile and API, carrying state from start to finish
  • Run automatically across iOS and Android configurations
  • Self-healed when your UI or OS version changes
  • Real user behaviour covered: taps, swipes, scrolls and form input

One test, from web to phone

Your users don't stop at the browser, and your tests shouldn't either. A single Thunders flow can start on web, follow the API call, and finish in the native app, carrying state the whole way. Sign up on the site, verify through the backend, finish onboarding in the app, all in one test.

That is the part most teams need three separate tools and three separate people to cover. Thunders runs it as one flow, in one language. Most mobile testing tools stop at the app boundary. Thunders doesn't.

One platform. The full mobile testing lifecycle.

Most tools run the scripts you write. Thunders generates the tests, runs them across devices, and keeps them working as your app changes.

Generate a mobile flow from a plain-language description

Describe your mobile flow, onboarding, checkout, account settings. Thunders builds a full test suite covering happy paths, edge cases and error states.

Execute across devices

Tests run in parallel across real iOS and Android configurations, every release. Results land in your CI pipeline and your ticketing system.

Self-healing tests that survive an OS update

OS update, UI refresh, new device form factor. Thunders detects the change and self-heals. Your suite stays current without a manual fix.

Real devices for truth, emulators for speed

Emulators give you broad coverage on every commit: instant, parallel, cheap. Real devices catch what only hardware shows, the OS quirk, the odd screen, the flaky network your users are actually on. Thunders runs both, so you stop choosing between fast feedback and real-world confidence.

See it on a real cross-surface flow: sign up on web, buy in the app

Illustration of the 'Describe' step, writing a test scenario in plain language in Thunders

1. Describe

A new user signs up on our website, opens the mobile app, adds a product to the cart, applies a promo code, and completes payment on iOS and Android.

Illustration of the 'Generate' step, Thunders building the test automatically from the description

2. Generate

Thunders builds the full suite across both surfaces: the web sign-up form, backend verification, the app's tap sequences, payment confirmation, and error handling.

Illustration of the 'Execute' step, the test running and returning a pass or fail result

3. Execute

Web and app run as one flow, in parallel across iPhone and Android configurations. Pass or fail report in your CI in minutes.

Illustration of the self-healing step, Thunders repairing the test after a change

4. Maintain

Next sprint the cart UI is redesigned. Thunders detects the change and self-heals the test. Zero intervention.

Plugs into your mobile stack in minutes.

Thunders fits into your CI/CD pipeline, however it is built. No custom setup. No separate tool.

Illustration of Thunders integrating with CI/CD, issue tracking, and messaging tools

With Thunders, in just six weeks, our PM team covered 80% of our test scope, without writing a single line of code.

Florian Ernoult

VP Engineering, AgoraPulse

Mobile app testing services, run by certified QA specialists

Prefer to hand it off? With Thunders QA as a Service, certified specialists build, run and maintain your iOS and Android suites for you, on the Thunders platform. Bring in a dedicated QA specialist embedded in your team, or commission a set volume of tests on your priority mobile journeys. Either way, you add coverage without hiring and without standing up a mobile automation practice from scratch.

Frequently Asked Questions

Does Thunders test on real iOS and Android devices?

Yes. Thunders runs your tests on real iOS and Android devices across multiple configurations. Every release is checked against the device and OS combinations your users actually run.

Do I need to write code or install an SDK to use Thunders?

No. You describe the flow you want to test in plain language and Thunders generates, runs and maintains the test. There is no scripting and no SDK to embed in your app.

How does Thunders handle test maintenance when my app changes?

Thunders self-heals its tests. When your UI is redesigned, an OS version updates or a new device form factor ships, Thunders detects the change and repairs the affected test with no manual intervention.

Can Thunders run mobile tests in parallel across devices?

Yes. Thunders executes tests in parallel across iOS and Android configurations on every release, and returns a pass or fail report in your CI pipeline within minutes.

What types of mobile flows can Thunders test?

Thunders tests complete mobile journeys, including onboarding, login, checkout, payments and account settings. It covers real user behaviour such as taps, swipes, scrolls and form input, across happy paths, edge cases and error states.

How quickly can I create my first mobile test?

You can create your first test in minutes. Describe the flow in plain language and Thunders builds the full suite covering happy paths, edge cases and error states, then fits into your existing CI/CD pipeline.

Which platforms does Thunders support for mobile app testing?

Thunders supports native iOS and Android app testing. Tests are generated from plain language, run across real device configurations and self-heal as your app evolves.

See more use cases

Ready to ship faster with smarter testing?

Screenshot of the Thunders app Test Cases list, showing test sets, labels and last run status, with a label picker open