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

Microsoft
OpenAI
Nvidia
Boomi

"We have tripled our tests and are now executing tests in less than 2 hours with 78% Faster Test Execution"

Hrishi Potdar, Quality Engineering Architect

Boomi
GitHub
Best Egg

"We figured out a more efficient way to monitor system health and resolve failures earlier in lower environments."

Tenny, Engineering Operations Lead

Best Egg
Workday
Akamai
Louis Vuitton
NBCUniversal
City Furniture

"TestMu AI has significantly boosted our testing speed, is easy to implement, and provides exceptional support."

Nicholas Paulsen, Senior Quality Engineer

City Furniture
Cox
Transavia

"With 70% faster test execution, TestMu AI helped us achieve faster time-to-market and enhanced CX."

Daniel de Bruijn, Quality Assurance Automation Engineer

Transavia
Estée Lauder
TripAdvisor
boohoo

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.

TestMu REAL DEVICESREAL 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
Device picker spanning Android 9 to Android 17 on Samsung, Google Pixel, OnePlus and Xiaomi phones, beside app upload options

TestMu APP AUTOMATIONAPP 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
Automation dashboard listing Appium and TestNG builds on 50,000+ real Android and iOS devices

TestMu KANE AIKANE 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 KaneAI

Describe 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.

KaneAI authoring and self-healing tests on real devices

TestMu RESPONSIVE TESTINGRESPONSIVE 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
One web page rendered side by side at phone, tablet and custom viewport sizes in a real device session

TestMu AI Mobile Testing Lab vs In-House Device Labs and Emulators

Android holds 69.17% of the mobile OS market and iOS 30.81%, per StatCounter data for September 2026. Compare each option from device count to cost.
sparkles

Top Choice

Features

TestMu AI

In-House Device Lab

Emulators and Simulators

Device count

50,000+ real devices
20 to 200, typically
Virtual images only

Setup time

Under 30 minutes
Weeks to months
Fast, per machine

Maintenance

Handled by TestMu AI
Full-time lab management
SDK and Xcode upkeep

Parallel runs

Many devices at once
Fixed by devices on hand
Limited by local hardware

Biometric sensors

Real sensors
Real sensors
Not available

NFC and battery

Real hardware
Real hardware
Not testable

Network

Real radio, 2G to 5G
Your office network
Host network only

Manufacturer OS builds

Real OEM skins
Only models you own
Stock images

Cost model

Subscription
Devices, racks, staff
Free

Mobile Testing Lab Tools for Real-world Conditions

Mimic Real-World Scenarios

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

Integrated Native Developer Tools

Use Chrome DevTools to debug mobile apps across multiple devices with different screen sizes.

Upload App Files

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

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

Geolocation Testing

Route device traffic through IP addresses in 170+ countries, including India, Japan, the United States, and more.

Accessibility Testing

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.

Appium

Appium

Automate iOS and Android apps in any language.

XCUITest

XCUITest

Automate iOS tests using Apple's native framework.

Espresso

Espresso

Run Android UI tests on real devices.

Detox

Detox

End-to-end testing for React Native apps.

Maestro

Maestro

Flow-based UI testing for Android and iOS.

Success Stories of TestMu AI (Formerly LambdaTest)

Dashlane

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 Report

TestMu AI recognized in The Forrester Wave™: Autonomous Testing Platforms, Q4 2025

Read Report

Wall of Fame

TestMu AI is the #1 choice for SMBs and enterprises across the globe.

Software review award badges

Enterprise-Grade Security

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

Security compliance certification badges

Integrations

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

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As Seen On

Frequently asked questions

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