It seems that it checkes for studies at random times. I for sure saw it not cheking for a few hours or checking every 2 minutes. This leads to a loss in the possibility of taking more studies. At least it is better than checking directly the website all day long.

Theres a better extension called Prolific Sound Notification add on.

Check interval selector is not available in settings. Furthermore, studies notifications are always late.

Is there any way to disable the sound on Firefox ? I can see there's meant to be in the description, but cannot for the life of me find where to actually do it - Thanks

The app itself is very good, but the problem is, that the only can check for studies every 60 seconds. Thats too long. Most studies are full within a minute, so you cant participate in it. I wish the devs would make it that it could update faster, like very 10sec or so.

I realise that some Prolific surveys are very popular but by the time the "Prolific Assistant" alarms me to a survey it is already full.