Before using PsyToolkit, make sure you fully understand your legal responsibilities.

PsyToolkit is free of cost for any non-commercial user.
PsyToolkit is the intellectual property of Gijsbert Stoet.
PsyToolkit comes without warranty. The user is entirely responsible for the consequences of use of the software and website.
The PsyToolkit website can be switched off at any time and users might not be warned or informed. Obviously, this is not planned and nearly impossible, given that the server is placed in a professional data center. The point is, though, that there are simply no guarantees. Any problems are not the responsibility of Gijsbert Stoet. (So do not sue me for data loss, etc!)
Suspected inappropriate use (e.g., uploading indecent illegal images) is not allowed and when detected will be reported to the relevant authorities.
Commercial use (e.g., online surveys) needs to be discussed with Gijsbert Stoet first.
Gijsbert Stoet is not responsible for the studies carried out with PsyToolkit. For professional or student research, users must themselves ensure (ethical) approval for research has been given, where applicable.
PsyToolkit can be used for free for non-commercial use, but if you use it and write reports and/or publish surveys and/or experiments using it, you always must properly cite it and credit Gijsbert Stoet for creating the software.
When in doubt, do not hesitate to contact Gijsbert Stoet via email to Professor Gijsbert stoet via