Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
From $6 per participant (indicative, plus platform fee)
PaidFrom $45 per participant (indicative, general population)
PaidWhat drives the bill
The metric that actually scales your invoice.
You set the incentive with a fair-pay minimum, plus a percentage service fee. Far cheaper than moderated-research platforms.
Per-participant recruiting fee plus the incentive you choose. Specialist B2B professionals cost considerably more.
Free tier
No subscription; pay per participant.
Free to manage your own participants; recruitment is pay-per-participant.
Open source
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Widely used
Prolific · since 2014
Widely used
User Interviews · since 2015
Strengths
Limitations
Best for
Survey-based and quantitative studies where data quality matters and budget is limited.
Teams whose research is blocked on finding and paying the right participants.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.