
Online APK Emulator for App Testing
Run and test APK files online across multiple Android versions in a browser-based emulator, or switch to 10,000+ real devices for full hardware accuracy.

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Run and Test APKs on the Online APK Emulator and Real Devices
Interact with your app manually, run Appium and Espresso automation, and validate on real Android devices, all from your browser.
REAL DEVICE CLOUD
Real Device Cloud for Your APK Runner
Emulators give a glimpse, but they fall short of real-world behavior. Run your APK on real devices for natural gestures, live interactions, and every edge case.
Start Testing Now- Real-world scenarios, from natural gestures to live interactions across every edge case.
- 10,000+ real devices and 250+ configurations covering legacy and latest Android.
- Run your full suite in parallel in the automation grid, cutting hours to minutes.
MANUAL + AUTOMATED
Online APK, Both Manual and Automated Workflows
Interact with your app manually, then run automation frameworks like Appium and Espresso against the emulator and real devices. Save time and improve app quality.
Run Your Online APK TestingLambdaTest (now TestMu AI) elevated our mobile app testing with exceptional support, a user-friendly platform, and advanced reporting. Fast, executable, and perfect for us.
Georgije Kundacina
Senior Software QA Engineer
Every Android Device. Any Version. One Cloud.
Run your APK across the full Android matrix, from day-zero flagships to legacy versions, without maintaining a device lab.
Quick App Upload
Drag, drop, and deploy – no waiting, no friction. Get your mobile apps on real devices faster than ever.
40+ Features On Your Fingertips
Test like your users do on real hardware. Authentic gestures including Tap, Swipe, and Zoom deliver true-to-life app experiences.
Device Logs
Debug faster with instant device logs. Get real-time insights into crashes, errors, and performance issues directly from device sessions.
GPS & IPS based Geolocation testing
Test from 170+ global locations for accurate localization, compliance, and regional user experience.
Intelligent UI Inspector
Inspect every element with intelligent precision. Identify UI components, properties, and hierarchies to accelerate debugging.


Accessibility Testing
Build for everyone – automated accessibility testing built-in. Catch WCAG violations early and deliver inclusive experiences for all users.
Text must contrast with the background: 4.5:1 for small text and 3:1 for large.
Why TestMu AI For Your APK Runner
Test Locally Hosted Apps
Effortlessly test your mobile applications with TestMu AI tunnel for seamless performance across various devices.
Extensive Android versions
Explore Android devices like Pixel, Oneplus, Galaxy with Android versions like Android 11, 10, Pie (9) and more.
Uploads Files
Install multiple apps in one session and easily upload apk files and install directly from the Play Store.
Simplify Debugging
Effortlessly debug your Android APK with detailed logs, crash reports, video recordings, and screenshots for each test.
Geolocation Testing
Test your mobile app from different geoIPs to make sure your users get the perfect experience across all locations.
Network Throttling
Ensure seamless user experience by checking your mobile view application responsiveness on various network profiles.
Multi Device Testing
Upload your app and test it on upto 6 devices at the same time on Real Device Cloud, supercharge you online APK testing.
Easy App Control
Effortlessly manage application installation, termination, and uninstall applications within the Apk Emulator Online.
Device Control Features
Easily manage volume, lock device, shake, on-screen keyboard, and rotate in the Apk Emulator Online.
Dedicated Real Device Cloud on TestMu AI
Public Real Device Cloud
Optimize app testing with our Public Real Device Cloud for seamless performance across all devices.
Private Real Device Cloud
Exclusive 24/7 access to dedicated iOS and Android devices for your team.
On-Premise Selenium Grid
Test at cloud scale, your data stays behind your firewall, always secure and compliant.

AI-Agentic Quality Engineering
AI-native agents that plan, author, run, and analyze APK tests across the online emulator, 10,000+ real Android devices, and your CI pipeline.
Plan, author, and evolve end-to-end tests using natural language.
More about KaneAI
LambdaTest is now TestMu AI
On January 12, 2026, LambdaTest evolved into TestMu AI, the same trusted testing cloud, upgraded for the AI era.
Now a full-stack agentic AI quality engineering cloud, it automates end-to-end testing across web, mobile, and AI apps with autonomous agents that plan, author, execute, analyze, and optimize tests.
The next era of the world's first fully Autonomous Agentic AI Quality Engineering Platform is here.
Asad Khan
Co-Founder & CEO
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.”
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Sr. Engineering Manager
Some Love from our Customers
As Best Egg expanded its product offerings and entered new markets, we knew our old testing infrastructure couldn’t keep up.
With support from Tenny Agustin, our Engineering Operations Lead, we modernized our approach with
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Best Egg
best-egg
Excited to Share My Learning Journey with Kane AI & Lambda Tool!
I'm pleased to announce that I've recently gained hands-on experience exploring Kane AI through the Lambda Tool and it’s been a fantastic journey of upskilling!
KaneAI

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See how is #Futureready to enable blazing-fast test orchestration seamlessly integrated with organizations' existing CI/CD platforms, using #Microsoft Azure.
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More Reasons to LoveTestMu AI (formerly LambdaTest)
See how TestMu AI speeds up your testing with AI-native authoring, faster execution, and deeper test insights across web, mobile, and AI applications.
TestMu AI Named a Challenger in the 2025 Gartner® Magic Quadrant™
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