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5-star mobile app testing

High customer expectations. Hundreds of device/OS combinations. Accelerating high-pressure release dates.

Mobile app testing is hard. We can help.

Mobile app customers

The Testlio difference – networked testing

Innovative test management platform

With unique capabilities such as collective testing and instrumented testing, we equip customers with the best possible testing tools – free with a subscription.

Expert testers

With validated testers in 100+ countries, Testlio offers a select pool of the best-trained, most-motivated testers in the business. Only 3% of the tester sign-ups into the Testlio network are accepted.

Compensation model

Our testers are paid by the hour, not by the bug, which leads to higher quality issue detection and thoughtful reporting.

World-class services

Our services team has earned a best-in-class 75 net promoter score and 4.7/5 G2 score.

Mobile Testing Case Studies

Thrive360 Case Study

Thrive360 Case Study

Wellness startup achieves global coverage and 3x testing velocity with Testlio…

Leading Sports App Case Study

Leading Sports App Case Study

Our client, a top-15 sports app and website with multi-sport streaming, score updates, and news, increased their app store rating by 22% after partnering with Testlio.

eCommerce Payments Testing Case Study

eCommerce Payments Testing Case Study

Our client’s rating on the App Store is a world-class 4.9+ stars, and they’ve earned the title as one of Fast Company’s ‘10 Most Innovative Retailers for 2020.’…

Business outcomes

Increased transparency and confidence

“Some of the benefits we’ve received are increased visibility over the “broken” parts of the application and increased confidence in production released.”— Verified Testlio client on G2

Improved user experience

See how this top-15 sports app improved app store ratings by 22% from one release to the next with the help of Testlio.

Less time sorting through bugs

See how SAP concur found 6x and fixed 3x more bugs when switching to Testlio from a leading competitor.

True partnership

“In a world where priorities can change on a whim, Testlio has proven capable of delivering flexibility with a genuine smile. This really helps us serve our customers in an even more effective and timely manner.”— Verified Testlio client on G2

Mobile app testing challenges

Testlio solutions

Accelerating development cadences

On average, our clients update their apps 2 to 4x per month. In a competitive mobile app space, this is a necessary yet stressful development and testing pace.

Overnight and weekend testing

Leveraging our global network of tens of thousands of expert testers, we test overnight and on weekends to deliver results within tight testing windows and deadlines.

Fragmented devices

On average, our clients test 24 device/OS combinations per release. Knowing which combinations to test, and maintaining coverage on all of them, is a tall task.

Unlimited real device coverage

Our global network of validated testers uses 100% real device coverage on over 1200+ devices.


Your apps must appeal to users all over the world, regardless of language, currency, or localized nuances. Testing for a consistent, global user experience can be overwhelming.

Expansive location coverage

Our network lives in 150+ countries, meaning that we can match our testers to your users, no matter where they are.

High consumer standards

Your apps must appeal to users all over the world, regardless of language, currency, or localized nuances. Testing for a consistent, global user experience can be overwhelming.

Usability testing

Our expert engagement managers (often with 10+ years of testing experience) can design test cases to meet even the most rigorous standards of UX.

Quotes from verified clients on G2

“I like how easy they are to work with. It is as if they already understand what you are looking for and are willing to go the extra mile to ensure their service is top notch.”

— Max R, Director Live Digital Operations

“Great mobile app knowledge and coordination with our hectic release cycles. Excellent communication and pleasure to work with.”

— John A, Sr Software Engineer

Testing capabilities

Functional testing

Functional testing means rigorously making sure things work as expected. If they don’t, our testers will find the issues before your users do.

Using test cases for each app function, our testers diagnosed an inability to tip with gift cards.

Usability testing

Usability testing means testing UX as well as function. It catches unnecessarily lengthy user flows, annoying or missing features, and costly bugs like long load times.

Our testers diagnosed an inability to cancel orders in-app – you had to go out of your way to call and cancel.

Localization testing

Localization testing means using real testers in the same locations as your users. They can verify that your mobile app experiences are geographically and linguistically relevant.

One of our testers drove three hours for on-site testing at a remote location to ensure that they experienced the same real-world conditions as users.

User experience testing

End-to-end experience testing means that we test all aspects of your mobile app and how it works in the real world.

By ordering in-app, driving to the restaurant, and picking up multiple orders, our testers found that pickup wait times were, on average, 2x slower than the client’s goal.

Payments testing

Payments testing means verifying that each payment method (and combination of payment method) transacts smoothly.

Our testers diagnosed that payments on Android devices were double-charged.

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