A Complete Guide to Mobile App Usability Testing

Hi there! As an app testing expert with over 10 years of experience evaluating apps on thousands of real mobile devices, I created this comprehensive guide to equip you with a masterclass on mobile app usability testing.

I‘ll provide everything you need – from an overview of what mobile usability testing is to actionable best practices – so you can improve your app‘s user experience.

What is Mobile App Usability Testing All About?

Mobile app usability testing lets you watch real users interact with your mobile app to find problems and collect feedback. Moderators give testers specific tasks, observe their behavior, record their feedback, then improve the mobile experience.

The goals of mobile usability testing include:

• Finding user experience issues with workflow, navigation, controls, or layout
• Understanding what users like or dislike about the interface and features
• Identifying improvements that increase user retention and conversion
• Benchmarking task success metrics before and after changes

Teams conduct usability testing frequently across the development cycle since it allows easier and cost-effective iterations. The earlier testing starts, the better the product-market fit.

A Deloitte study found 33% higher developer productivity and 50% increased likelihood of successful launches for those adopting usability testing from the start.

So now that you know what it is and why it matters, let‘s look at how to conduct killer mobile usability studies.

Best Practices For Running Effective Mobile App Usability Tests

Great usability testing doesn‘t happen by chance. Follow these mobile testing best practices for reliable insights every time:

Kick Off Testing By Defining Goals and Metrics

Start by asking yourself:

• What key questions do we need answers to guide development?
• How will we quantify success, issue severity, or feedback themes?

Outlining goals and metrics upfront ensures the test stays focused. Common metrics include task success rate, completion time, conversion drop-off, ease-of-use rating, workflow steps, or sentiment.

Define 2-3 primary metrics aligned to business or user priorities that indicate testing success. This makes post-test analysis more efficient too.

Design Realistic, Focused Test Tasks & Scenarios

Usability tests reveal pain points best when tasks match real-world use cases.

Aim for 3-5 critical user workflows around:

• Account registration or login
• Primary app conversion path
• Main lifestyle scenario like booking, purchase confirmation
• Key settings modification

Tightly scope tasks around specific target elements. Avoid overly broad or descriptive prompts. Direct goals keep sessions on track.

Recruit Target Users, Not Just Any Testers

85% of usability problem discoveries involve actual users. Recruit prime candidates that represent your persona demographics and behaviors.

Screen for:

• Age/gender/background
• Mobile feature/app preferences
• Lifestyle or shopping habits
• Comfort with technology

A test group with 6-12 participants per segment uncovers 75-85% of all issues. Budget for incentive gifts to aid recruiting.

Remotely Moderate Testing Sessions

Remote unmoderated testing is easier to scale but lacks the real-time interaction of moderated tests.

Full moderation with screen sharing and video observation offers:

• Clarification of confusing tasks
• Answering tester questions
• Noting emotional sentiment
• Guiding struggling participants

I recommend full-session moderation for discovering maximum insights even if running remote tests.

Analyze Both Quantitative and Qualitative Results

Comb through session recordings using ratings/metrics as a lens for search task struggles:

• Aggregate task success, flow completion rates
• Quantify ease-of-use via post-session surveys
• Highlight recurring verbal reactions indicating pain points

Combine metrics with direct UX suggestions, likes/dislikes, and redesign requests captured through open-ended feedback.

Share Actionable Insights with Prioritized Redesign Ideas

To drive product changes, catalog tester feedback into a report detailing:

• Summary of key metric benchmarks
• Top workflow problem zones
• List of issues ranked by severity
• Specific redesign/enhancement ideas

Call attention to issues causing tasks failures or user frustration. Provide action steps mapping problems to solutions for developers.

Retest Key Flows After Making Improvements

Run abbreviated re-tests on priority updated workflows measuring if metrics improved and issues got addressed successfully.

Testing iteratively this way indirectly builds loyalty even without fancy features since experience trumps novelty for app longevity.

Stick to that best practice playbook, and your mobile usability studies will soon become an indispensable part of design decisions.

Now let‘s explore popular usability testing methods to fit any mobile app need.

Choosing the Right Mobile App Testing Methodology

With a solid test plan, the next decision is picking the ideal usability testing method matching research questions, app maturity, timeline, and budget.

Testing Method	Best Uses
In-lab Testing	Controlled one-on-one testing with target devices and moderated tasks
Field Testing	Quick validation of mobile experience by intercepting users in the app‘s natural context
Remote Moderated Testing	Effective for discovery research with screen sharing for body language and sentiment observation
Remote Unmoderated Testing	Cost-efficient way to scale validator feedback from a wider demographic spread
A/B Testing	Comparing two variants of an interface or process lets you empirically gauge impact on funnel metrics
Beta Testing	Release your app to a small public group of loyal users allowing for refined real-world feedback at scale

Layer 5+ methods for comprehensive insights on mobile experience early through post-launch.

Remote moderated testing tackles discovery research effectively. Then unmoderated and field testing amplifies validation coverage. Beta testing caps it off with expansive user segments experiencing new features or future releases.

Now let‘s examine top challenges teams face when deploying mobile usability testing.

Top Challenges with Mobile App Usability Testing

While usability tests generate tons of upside, conducting effective studies comes with hurdles like:

Difficulty Recruiting Target Users

Recruiting prime user profiles with niche attributes on tight timelines poses barriers without access to proprietary panels.

Inability to Influence Developers

Pushback arises when final reports highlight issues but lack actionable solutions tied to engineering priorities.

Capturing Meaningful Mobile Behavior Data

Limitations exist around recording native mobile gestures like swiping or pinching that offer big contextual behavioral clues.

Issues Testing Specific Mobile App Types

Specialized apps around gaming, augmented reality, or 3D modeling may provide fewer real-world use case measures.

Budgeting for Ongoing Testing Investment

Discretionary funds run dry fast without formal cost justification earmarking usability resources across quarterly roadmaps.

While each presents unique concerns, proven strategies help overcome the majority through upfront planning and instrumentation.

Now let‘s walk through a real usability test example showing how to spot and fix issues.

Sample Usability Test on YouTube Mobile

Let‘s see remote moderated usability testing in action on the YouTube mobile app hunting for UX issues.

The goal is observing 5 testers trying to find a baking video given the app installed on a Samsung S21 device via BrowserStack.

Step 1) We‘ll have participants think aloud during their search sharing insight into pain points.

Step 2) By recording their session, we can quantify task success and compile feedback on obstacles.

Step 3) Reviewing tapes will unveil usability issues around search and recommendations to improve.

In this clip, note how we gain insight into the user struggling to locate search results:

The platform recorded the user‘s frustration while moderators loggedTimestamped through observations. This enables understanding top issues for prioritized fixes after aggregating consensus struggles across multiple testers.

So in closing, I hope this guide gave you a comprehensive look at seamlessly setting up and running mobile usability tests to spot those not-so-obvious issues impacting adoption. By proactively engineering the best experience for target users early on through regular testing, your mobile apps are sure to delight and retain customers amid all the competition.

When you‘re ready to try mobile usability testing for yourself, BrowserStack App Live makes facilitating studies easier than ever with a device cloud delivering real mobile user testing at massive scale. Sign up today for a free trial to validate your own apps!

Let me know if any other mobile testing questions come up!