Coverage matters when considering a testing partner.

At Testlio, we think of test coverage on three dimensions:

1. Devices: The real hardware that our human testers work on matters most to our clients. We never simulate or emulate devices and conduct app testing on a nearly infinite combination of platforms and devices.

2. Locations: In many cases, where we test is critical. With testers in nearly 100 countries around the world, including thousands in the US, we can bring people to precisely the place you require for location testing.

3. Languages: Our testers speak, and can test in, more than 100 languages. When you need linguistic expertise, coupled with functional, localization, and other QA testing services, Testlio can help. 

Testlio QA Testing for Microsoft
Testlio QA Testing for American Express
Testlio QA Testing for CBS
Testlio QA Testing for the NBA
Testlio QA Testing for

Devices Covered

The magnitude of devices, operating systems, and environments enabling today’s apps can overwhelm QA teams and thwart the best-intended coverage strategy. 

Testlio’s got your ‘what’ covered with the smartest network of testers conducting app testing on a nearly infinite combination of real platforms and devices.

Mobile Android App Testing with Testlio


Fully managed Android app test coverage on any hardware manufacturer and carrier.

Apple iOS App Testing with Testlio


Fully managed iOS app test coverage on any Apple device, paired with any carrier.



Whether tethered to apps or standalone, Testlio is a market-leader in testing browser-based experiences.



Consumers expect a flawless desktop app experience. Testlio covers desktop app testing on any operating system.

Smart Watch App Testing with Testlio


From smartwatches, clothing, and glasses, to medical devices and more, Testlio has deep experience with wearables and other IOT offerings. 

Testlio Device Coverage Consoles


When apps must run flawlessly on Xboxes, Playstations and/or other consoles, Testlio ensures broad coverage.

Testlio Device Coverage Streaming


With deep expertise in livestream, analytics and other capabilities, Testlio ensures that native apps work well on Roku, Chromecast, Fire TV, AppleTV and more.

Voice testing with Testlio


Increasingly, digital experiences must work well on and with voice-oriented services like Amazon Alexa, Google Voice, and Apple Siri.

Testlio Device Coverage AR and VR


When apps are connected to headsets and other equipment to power augmented or virtual worlds, Testlio can help.

Testlio Device Coverage


From appliances to home monitoring; from field sales printers to automotive plug-ins; from custom handsets and more, Testlio is there for you. 

Have questions about a specific device testing need? Contact Us.

Locations Covered

Location is often paramount when it comes to test coverage. Today’s test coverage strategy must take into account the evolving ways consumers engage with technology. Apps increasingly meet consumers with a frictionless experience from the digital realm into the physical world. At work, home, the mall, while traveling, or catching a game at the ballpark. 

 Testlio’s got your ‘where’ covered with a global network of validated testers ready to tackle any testing need in any location. They are traveling, shopping, and experiencing apps in the same locations as your customers using real-device in real-world settings. For real! 

Testlio Location Coverage Countries


As your business concentrates on in-country experiences, Testlio can help. With testers in nearly 100 countries, we likely already have coverage. And with our services team, we can recruit additional expert testers anywhere you need us.

Testlio Location Coverage Metros


For advertisers, streaming media, sports and other providers, specific city-oriented metros matter greatly. Testlio has worked with major outlets like CBS and Fox, ensuring that for the biggest game or event, the right testers are available—live.


Whatever the app, from IoT testing on Alexa and Google voice-enabled devices, to home monitoring systems, doorbells, appliances, and more, Testlio has your in-home needs nailed.

Travel Testing with Testlio


Whether it’s on planes, trains, or automobiles – Testlio tests your app-driven experience during real-life moments of travel. Apps are used every day while ride-sharing, taking a bus, driving a car, or even tooling around on scooters. Testlio drives your travel experience test coverage home.

Testlio Location Coverage in the Workplace


Apps often serve as valuable resources for getting work done. Testlio covers professional and business apps in real-work situations and environments.


App-driven experiences are propelling changes in how retailers and restaurants engage. We bring real, expert testers to your stores to ensure that your app/store combinations are great. 


Your apps are used everywhere, including sporting events, festivals, and amusement parks. How do you find testers for these venues? Testlio, of course.

Testlio Location Coverage Anywhere


Wherever you need expert testers, we can be there. Have questions about a specific location need? Contact Us.

Languages Covered

As the world continues to get smaller, your apps must speak to native users across the globe. Lucky for you, Testlio’s educated and certified testers live in nearly 100 countries and speak 100+ languages.

Your testing will never be limited by language with Testlio. We’ve got you covered, including localization testing services to satisfy customers around the world.


Here’s a small sampling of languages we test for our clients. 

Testlio Language Coverage English


Testlio’s validated network of testers live in nearly 100 countries and speak over 100 languages, including, of course, English!

Testlio Language Coverage Spanish


¡La red validada de evaluadores de Testlio vive en casi 100 países y habla más de 100 idiomas, incluido el español!

Testlio Language Coverage German


Das von Testlio validierte Testernetzwerk lebt in fast 100 Ländern und spricht über 100 Sprachen, darunter Deutsch!

Testlio Language Coverage Japanese


Testlio no kenshō-zumi tesutā no nettowāku wa, hobo 100-kakoku ni sunde ori, nihongo o fukumu 100 ijō no gengo o hanashimasu!

Testlio Language Coverage French


Le réseau de testeurs validés de Testlio vit dans près de 100 pays et parle plus de 100 langues, dont le français!

Testlio Language Coverage Chinese

Mandarin Chinese

Testlio de cèshì rényuán wǎngluò biànbù jìn 100 gè guójiā, jiǎng 100 duō zhǒng yǔyán, dāngrán bāokuò zhōngwén!

Testlio Language Coverage Hindi


taistlio ke pareekshaarthiyon ka maany netavark lagabhag 100 deshon mein rahata hai aur hindee sahit 100 se adhik bhaashaen bolata hai!

Testlio Language Coverage Arabic


taeish shabakat aikhtibar Testlio almuthwqt fi hawalay 100 dawlatan watatahadath ‘akthar min 100 lughatan , bima fi dhalik allughat alearabia!

Testlio Language Coverage Malay


Ujian penguji Testlio di hampir 100 negara dan bercakap lebih dari 100 bahasa, termasuk bahasa Melayu!

Testlio Language Coverage Russian


Proverennaya set’ testirovshchikov Testlio prozhivayet pochti v 100 stranakh i govorit na boleye chem 100 yazykakh, vklyuchaya russkiy!

Testlio Language Coverage Bangla


Ṭēsṭali’ōra parīkṣakagaṇēra baidhatāprāpta nēṭa’ōẏārka prāẏa 100 ṭi dēśē bāsa karē ēbaṁ bānlā saha 100 ṭira’ō bēśi bhāṣāẏa kathā balē!

Testlio Language Coverage Portuguese


A rede validada de testadores da Testlio vive em quase 100 países e fala mais de 100 idiomas, incluindo o português!

Testlio Language Coverage


Testlio’s language coverage expands the globe. Whatever language you need tested, we can test it. Do you have a unique language testing challenge? Drop us a line.

The Testlio Difference

We help leading brands and emerging companies by way of comprehensive test coverage and the Testlio App Testing Platform: Experienced people – enabled by technology – who do the heavy lifting to scale and manage your app testing with ease.

Our Customers Love Us. So will you.

Your customers rely on your apps every day, and we care about their experience as much as you do. Testlio has deep domain expertise with over 1.5 billion end-users touching our customers’ apps every month. We only hire passionate and rigorously verified global testers and QA industry leaders to manage projects. We’ve proudly earned an industry-leading NPS score, which is why the world’s best app developers and clients trust Testlio to manage their test coverage.

Global Test Coverage

Our testers collect real devices, so you don’t have to depend on simulators to approximate real-life performance. This level of test coverage means fewer false positives and more complete, reliable results. Our AI algorithm complements the most challenging coverage strategy by pairing you with targeted devices, operating systems, environments, and testers in the regions that matter most.

Flexible Managed Services

View Testlio as your QA team with fully-managed services or as an extension of your team with co-managed options. Either way, from collecting cycle requirements to delivering results on deadline, we oversee test coverage, identify risks, and recommend enhancements to improve the overall app experience. We become one of the “high-performers” on your team and ensure you keep up with continuous deployment.

Enjoy A Transparent, Intuitive, and Scalable Platform

You have visibility into every step of the testing process – from testers, devices, and test cycles, to issues uncovered, to a chat forum that captures conversations. Our world-class testing software enables your Testlio team to efficiently manage your test coverage so you can spend your time building world-class apps.

Our Clients

From leading brands to emerging companies, our clients support 1.6 billion+ users and are organizations of all sizes.

Testlio QA Testing for American Express
Testlio QA Testing for CBS
Testlio QA Testing for
Testlio QA Testing for Microsoft
Testlio QA Testing for the NBA

Dream up any testing scenario. We've got you covered.

Testlio is the leader in managed app testing. We can help!

  • Take comfort in a managed services approach that combines expert project managers averaging 10+ years of QA industry experience and Testlio’s network of passionate testers.
  • Gain visibility into your testing environment by way of Testlio’s transparent testing process and world-class testing software.
  • Tap into Testlio’s magnitude of app testing capabilities to assure test coverage on any device, any location, and any language.

Find Out More

Schedule a chat with one of our test coverage experts to discover how we can make testing painless for your organization