Find what's frustrating your users, not just breaking the build.

Your product might be 'functionally' flawless, but does it match how users expect it to behave? Testlio’s managed usability testing puts real users and UX researchers in front of your product to uncover friction, confusion, and usability gaps that drive churn before your customers do.

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Replicate real user experiences, globally and at scale

Validate experiences with a curated group of real users who represent your target audience, speak your customers' languages, and use the devices and payment methods they rely on daily. With Testlio, you get the real-world coverage your product deserves without slowing your release pipelines.

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600k+
Devices
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800+
Payment methods
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150+
Countries
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100+
Languages

Improve the experiences that matter most

Whether you’re looking for early design validation or insights into how you can outperform your competition, Testlio gives you the qualitative and quantitative data that reveals where and why your experience feels frustrating to users, as well as how to fix it. Our services include:

Moderated usability testing

Facilitated sessions, led by UX researchers, with real users who test critical flows, navigation patterns, and complete tasks while thinking out loud to expose failure points as they happen, with issues ranked by severity.

Unmoderated usability testing

Self-guided sessions that test end-to-end journeys across user profiles, devices, and markets in parallel, delivering task success rates, drop-off points, and screen recordings at scale.

Competitive benchmarking

Side-by-side comparison of your product against direct competitors across the same flows, features, and tasks, with a clear breakdown of where you're winning, where you're losing, and how you can improve your product.

A/B preference testing

Comprehensive evaluation of design variants, interaction patterns, and UI decisions with real users before development begins. You get preference data and behavioral rationale you can act on with confidence.

User interviews

In-depth conversations that explore workflows, decision points, and unmet needs, going beyond surface-level behavior to uncover the motivations and context driving how users actually use your product.

Surveys

Structured feedback across your user base that measures satisfaction, task effort, and sentiment across features and flows, with validated data to support prioritization and roadmap decisions.

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What working with us looks like

Here's how a usability testing engagement runs from start to finish.

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Discover and align

We dig into your product, identify the flows and audiences that matter most, and define the research questions and success metrics needed. 

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Design research plan

We align on the right testing method for your objectives and build test scripts, tasks, and survey questions tailored specifically to your product. 

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Recruit target users

We source and vet participants who reflect your target audience based on location, device, language, behavior, and experience level.

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Run the test

Users complete various tasks across your product in moderated or unmoderated sessions with full-screen, audio, and video capture throughout. 

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Analyze and report

We review session recordings, identify usability issues, and rank findings by severity, backed by direct user quotes and video evidence. 

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Deliver and present

You receive a structured report with prioritized findings and improvement recommendations for each issue, so you can refine your design.

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A curated group of users matched to your product

Our usability engagements, led by Testlio's UX researchers, are intentionally staffed with participants who are truly representative of your user base. Our global, vetted community brings on-demand and in-market contextual knowledge and lived experience to surface the issues that matter most to your users.

Full visibility into every session, finding, and decision

Testlio’s Platform, powered by LeoAI Engine™, matches the right users and participants to your engagement, orchestrates end-to-end testing workflows, and surfaces findings in real time. You see who participated, what was tested, and where users struggled. With built-in integrations with tools like Jira and TestRail, your team can triage and act quickly without disrupting workflows.

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Connected to your broader quality strategy

Usability doesn't exist in isolation. A flow that feels right might still fail in a new market, break for users with assistive technologies, or fall apart at checkout. Testlio supports 20+ testing types so you can combine usability testing with localization, accessibility, payments, functional validation, AI testing, and more in a single managed engagement.

Everything you need to ship experiences users love

Usability testing only drives impact when the findings are clear, the process is tight, and someone is accountable for making it all work. Testlio manages every piece of that, so your team can focus on building better products.

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End-to-end execution

We take ownership of participant sourcing, qualification, scheduling, study execution, and analysis. You receive prioritized findings mapped directly to product and release decisions without the overhead.

Strategic guidance

Your client team partners with product and engineering leaders to define key user flows and success criteria aligned with your goals, what is shipping next, and where the experience risk is high.
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Flexible coverage

We scale resources and coverage to your roadmap, align testing to your sprint and release cycles, and execute across the time zones and markets your product relies on to succeed.
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Intentional staffing

Every participant is carefully vetted and matched by geography, language, device, and usage context so findings reflect real production conditions and real customer behavior.

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Built-in security

We are ISO/IEC 27001:2022 certified and follow rigorous data protection protocols across every engagement. Your product and your customers' data stay protected at every stage.
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Proven at scale

Leaders at PayPal, Microsoft, Uber, and the NBA rely on Testlio to manage critical testing programs. Our experience spans finance, media, retail, healthcare, and more.

In the spotlight

Blog
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A Comprehensive Guide to Remote Usability Testing

In-person usability testing ensures a user interface (UI) is intuitive and user-friendly. However, it can be less effective in certain situations, especially ones where tight time constraints are a factor.

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Understanding Healthcare App Testing: Improving Customer Acquisition & Retention

Did you know the global digital health market is on track to surpass $660 billion by the end of 2025? That’s no surprise, considering how healthcare apps have become indispensable in our daily lives.

Blog
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The Mobile QA Metrics That Help You Ship Better

For many engineering leads and executives, reviewing quality assurance dashboards and automation reports may feel like trying to solve a complex puzzle, one where the pieces keep changing, and the full picture only comes into focus after it’s too late.

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Ship experiences people actually want to use.

Frequently asked questions

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How is Testlio's usability testing different from other providers?

Testlio combines a fully managed crowdsourced delivery model with a global community of users representative of your target audience. Our UX researchers handle everything from research design and participant recruitment to session execution, analysis, and reporting. You get structured, prioritized findings without building or managing an in-house research operation.

How do you recruit participants for usability studies?

We match participants to your target audience based on geography, language, device, demographics, and usage behavior. Every participant is screened and vetted before joining a study, so your findings reflect real-world user conditions, not a convenience sample.

Can usability testing run alongside our existing QA and release cycles?

Yes. We align usability testing to your sprint and release cadence so findings are available when your team can still act on them. Studies can run in parallel with functional testing, accessibility testing, or other QA activities without disrupting your workflows.

How quickly can we start a usability testing engagement?

Timelines depend on the scope of the study, the complexity of your product, and the requirements for participant recruitment. We involve our delivery team early to align on research objectives, testing methods, and scheduling so we can begin as quickly as possible.

Do you integrate with our QA and development tools?

Yes. Our Platform integrates with tools like Jira and TestRail so usability findings flow directly into your existing workflows. Your team can triage, prioritize, and track issues without switching tools or waiting for a separate handoff.

How do you use AI within your Platform?

LeoAI Engine™, the proprietary intelligence layer that powers our Platform, orchestrates the entire testing process, from test runs and work opportunities to recruitment, application, and results. By automatically surfacing the best-fit participants for each engagement, streamlining onboarding, and learning from historical project data, it removes friction and enhances precision at every step. This means fewer manual tasks, more strategic oversight, and dramatically improved speed and scale.

What does your pricing model look like?

Pricing is based on study type, complexity, participant requirements, and service level. There are no per-seat licenses. You pay for structured execution, vetted participants, platform access, and ongoing client services.

Can Testlio support testing for regulated products?

Yes. Testlio is ISO/IEC 27001:2022 certified and follows strict data protection and access controls to support usability testing for enterprise and regulated environments.

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