Research conducted with the PlaybookUX participant panel:
A typical unmoderated study should take around 15-20 minutes of the participants' time.
However, we know that some participants take longer than others to complete studies so we won't stop the screen recorder after 15 minutes. Please note, participants are paid for 15-20 minutes of their time so try to structure your study with that in mind! We typically see companies launch studies with 15-25 questions.
Research conducted with your own participants (Bring your own participants):
There is no time limit for an unmoderated bring your own participants study. However, we advise that you keep your test questions simple and short. Long tests will typically take longer to receive responses from testers.