Use cases Usability testing

Remote usability testing with screen, voice and context

Run remote usability tests on participants' own computers and phones. They complete set tasks on your website or app while recording their screen and thinking aloud, then rate how easy it was.

A man thinks aloud while he tests a website on his laptop at home

Usability testing checks whether people can use a website or app to do what they came to do, and where they struggle. Participants try set tasks while thinking aloud, and the researcher watches for hesitation, errors and confusion. On Zolensa, participants record their screen and voice while they complete each task on their own device, then rate how easy it was. To go deeper, the researcher talks it through with the participant in a live video interview, with observers watching unseen.

When to use usability testing

  • Before a launch or redesign: find the problems while they are cheap to fix.
  • Key flows: sign-up, search, checkout, booking, account settings.
  • Mobile and desktop: test on the devices people really use.
  • After a change: check that a fix worked with a new round of five or more people.
  • Benchmarking: the same tasks on your product and a competitor's.

How a study runs on Zolensa

  1. One task, one screen recording. For each task, write the scenario in the instructions: "You want to change your delivery address. Show us how you would do it." Add a screen recording question under it.
  2. Name where to go. Tell participants which website or app to open. On a computer they share the browser tab or window; on a phone they use the phone's screen recorder.
  3. Measure each task. After the recording, ask "Did you manage it?" as a single choice, and rate how easy it was on a 1 to 7 scale.
  4. Ask why, only when needed. Show "What got in the way?" only to people who say they did not manage it.
  5. Go live for depth. For a few participants, plan a one to one video interview after their recordings. Watch the recordings first, then ask about the moments they struggled, while observers watch from the observation room.
  6. Collect the evidence. Mark each problem as a highlight with a start, an end, a note and a tag such as "navigation". The highlights page lists every clip, ready for the report.

Zolensa features that help

  • Screen recording with voice. Computers record in the browser; phones upload from the built-in recorder. Recordings can be up to 10 minutes.
  • Text on screen, searchable. By default the text on each recording is read on Zolensa's own server, so you can search for the page or button people saw.
  • Transcripts with times. Click a line to jump to the moment a participant says "I can't find it".
  • Conditional questions. Follow-ups only for those who need them.
  • Tags and highlights. Tag each problem, then filter by tag to see every clip of the same issue.
  • Test participants. Your team tries every task on a real phone first, free.

Plan for these

  • Five people find most problems. Several small rounds, with fixes in between, teach more than one big round.
  • Write scenarios, not instructions. Say what the person wants to do, not which buttons to press.
  • Do a practice task. A short first task helps people get used to recording and talking at the same time.
  • Use a test account if needed. If the flow needs a sign-in or a payment, give participants test details in the task, and never ask for their own card.
  • Mind what is on screen. Ask people to close private tabs and notifications before they record.

Frequently asked questions

What is remote usability testing?

Remote usability testing is a usability test where participants take part from their own home or office, on their own device. They complete tasks while recording their screen and voice, with or without a moderator watching live.

What is the difference between moderated and unmoderated usability testing?

In an unmoderated test, participants work through the tasks on their own and send the recordings. In a moderated test, a researcher talks with the participant live and can ask questions. On Zolensa, participants complete the tasks as screen recordings, and you can follow up in a live video interview to explore what happened.

How many participants do you need for a usability test?

For finding problems, five to eight participants per round and per user group is common. Run another round after you fix the main issues.

Can participants test a mobile app?

Yes. On a phone, participants record with the phone's own screen recorder while they use the app, then upload the recording to the task. iPhone and Android both have a screen recorder built in.

How do we report usability problems?

Mark each problem as a highlight with a tag and a note. Export the highlights as a CSV with times and notes, or join the clips into a highlight reel with subtitles for the team.

Run your next study on Zolensa

We set up a workspace for your agency and walk your team through a study. Test participants are free and unlimited.