
A Mobile Testing Lab in Your Browser
Open one of 50,000+ real iOS or Android devices in seconds and test the way your users do, with the camera, GPS, biometrics, and carrier network all live.
Trusted by 3M+ users globally at
"We have tripled our tests and are now executing tests in less than 2 hours with 78% Faster Test Execution"
"We figured out a more efficient way to monitor system health and resolve failures earlier in lower environments."
"TestMu AI has significantly boosted our testing speed, is easy to implement, and provides exceptional support."
"With 70% faster test execution, TestMu AI helped us achieve faster time-to-market and enhanced CX."
What Is a Mobile Testing Lab?
A mobile testing lab gives software testers a wide range of mobile devices, from Android phones and tablets to iPhones and iPads, for manual and automated testing of apps in real-life conditions.
TestMu AI runs the lab in the cloud. The real device cloud gives you 50,000+ real Android and iOS devices in your browser for live mobile app testing, and the same devices run your Appium, Espresso and XCUITest suites through app automation.
Mobile Testing Lab for Live and Automated Testing
Test on 50,000+ real iOS and Android devices, run your suites in parallel, write tests with KaneAI, and check every breakpoint on actual screens.
REAL DEVICES
Live testing on real Android and iOS devices
Install your .apk, .aab or .ipa build, or pull it from the App Store or Play Store, and test it on the latest and legacy devices your users carry.
Get Started- Latest and legacy Samsung, Pixel, iPhone and Xiaomi models
- Set network, location, locale and orientation per session
- 24/7 access from anywhere, no in-house device lab to run

APP AUTOMATION
Automate mobile app tests in parallel from your CI
Your existing Appium, Espresso, XCUITest and Detox scripts run unchanged on real devices, with video, device logs and network logs from every run.
Get Started- Trigger runs from Jenkins, GitLab, CircleCI or Azure
- Run in parallel across devices to shorten test cycles
- Session replays and bug filing to Jira and Azure DevOps

KANE AI
Describe the test and KaneAI writes it
Tell KaneAI what to check on your app and it builds a runnable test from your words while you watch it happen on a real device.
Explore KaneAIDescribe the test in natural language and KaneAI converts it into executable steps automatically, with no scripting knowledge required.
Tell Kane CLI what you want to check in plain English and it runs the test on your app in an emulator or simulator, right from the terminal or through your AI coding agent.
When a UI element changes - a button renamed, a field repositioned; KaneAI automatically updates the locator and keeps the test running.

RESPONSIVE TESTING
Responsive testing on custom viewports
Load your site in Safari on iOS and Chrome on Android to check breakpoints, font scaling and tap targets on real device screens.
Get Started- Safari, Chrome, Firefox and Edge on real mobile devices
- Thousands of screen size and resolution combinations
- Parallel runs across phone, tablet and custom viewports

TestMu AI Mobile Testing Lab vs In-House Device Labs and Emulators
Top Choice
Features
In-House Device Lab
Emulators and Simulators
Device count
Setup time
Maintenance
Parallel runs
Biometric sensors
NFC and battery
Network
Manufacturer OS builds
Cost model
Mobile Testing Lab Tools for Real-world Conditions
Mimic Real-World Scenarios
Simulate how users interact with the app by testing on real world scenarios like network conditions, battery usage and more.
Integrated Native Developer Tools
Use Chrome DevTools to debug mobile apps across multiple devices with different screen sizes.
Upload App Files
Install multiple apps in one session and easily upload .aab, .apk, .ipa files, or install directly from the Play Store/App Store.
Test Locally Hosted Apps
Local hosted apps to help you test in dev environments and save your mobile apps from after-deployment bugs.
Geolocation Testing
Route device traffic through IP addresses in 170+ countries, including India, Japan, the United States, and more.
Accessibility Testing
Scan native Android and iOS apps for accessibility issues on real devices with the TestMu AI App Scanner.
Plug into TestMu AI's Real Device Cloud
Point your Appium, XCUITest, Espresso, Detox, or Maestro suite at our cloud with one endpoint change. No rewrites, no migration.
Success Stories of TestMu AI (Formerly LambdaTest)
50%
reduction in test execution time
“HyperExecute is a highly reliable test execution platform and has excellent customer support.”
Sagar Uday Kumar
Sr. Engineering Manager
More Reasons to Love TestMu AI
TestMu AI is a leading agentic AI quality engineering platform, trusted globally, that assures your AI deployments work as intended, safely and securely, across enterprise and real-world conditions.
Users
3M+
Tests
1.5B+
Enterprises
18K+
Countries
132
TestMu AI positioned as a Leader in the 2026 Gartner® Magic Quadrant™
Read ReportTestMu AI recognized in The Forrester Wave™: Autonomous Testing Platforms, Q4 2025
Read ReportWall of Fame
TestMu AI is the #1 choice for SMBs and enterprises across the globe.

Enterprise-Grade Security
We safeguard your data and AI systems with global security, privacy, responsible AI, and ESG standards.

Integrations
Works where you work, 120+ integrations with the tools your team relies on.

As Seen On
Frequently asked questions
- Create a free TestMu AI account.
- Pick a real Android or iOS device on the real device cloud.
- Upload your app build or install it from an app store.
- Set network and location, then test in your browser.
TestMu AI for Enterprise
Get access to solutions built on enterprise-grade
security, privacy, & compliance
- Advanced access controls
- Advanced data retention rules
- Advanced Local Testing
- Premium Support options
- Early access to beta features
- Private Slack Channel
- Unlimited Manual Accessibility DevTools Tests