Test
Key flow
Sign-up, onboarding or ordering: three tasks with SEQ, then UX-Lite.
What it answers: Which step of the flow to fix first.
3 tasks9 questionsSEQUX-Lite
UX-LiteEase and usefulness in two questions
Two questions on how easy the product is to use and whether it meets people’s needs, on a 1 to 5 scale. Together they give a 0 to 100 score: a short stand-in for longer questionnaires such as SUS.
Calculator
Enter how many people gave each answer.
Result71Averagen = 30
For UX-Lite the interval comes from each person’s answers, so totals alone cannot give it.
- Ease:
- 3.9
- Usefulness:
- 3.8
What it is
UX-Lite combines usability (ease) and usefulness (features meet needs). You need both: an easy product that solves nothing does not catch on, and a useful one that is hard gets abandoned.
With two questions it fits at the end of a short test, where a longer questionnaire would tire people.
Exact question wording
The standardised wording Tack uses in English and Czech. Change it and the results stop being comparable.
English
Product or site name is easy to use.Scale 1 to 5: Strongly disagree … Strongly agree
Product or site name's features meet my needs.Scale 1 to 5: Strongly disagree … Strongly agree
Czech
Product or site name se snadno používá.Scale 1 to 5: Rozhodně nesouhlasím … Rozhodně souhlasím
Funkce Product or site name odpovídají mým potřebám.Scale 1 to 5: Rozhodně nesouhlasím … Rozhodně souhlasím
How it is calculated
For each participant ((ease + usefulness − 2) ÷ 8) × 100, then the mean across all.
How to read the result
- From 80 the result is good, around 70 average, below 60 weaker.
- Look at the two questions separately too: low usefulness is a different problem from low ease.
When to use it
- At the end of a prototype or flow test.
- When comparing product versions over time.
Frequently asked questions
How does UX-Lite relate to SUS?
UX-Lite comes from research showing that two questions give results close to longer questionnaires such as the ten-item SUS, which makes it more practical for short tests.
Does the participant have to answer both questions?
Yes. The score counts only those who answered both.
Source: MeasuringU: UX-Lite
Templates with this metric
Test
Prototype first look
Three minutes of free exploring, UX-Lite and what people would use it for.
What it answers: Whether the prototype makes sense before you build it properly.
1 task5 questionsUX-Lite
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