UserTesting is a platform where companies can utilize the power of the cloud to test websites and apps on iOS, Android, MacOS and Windows.
When you sign up you fill out your profile and if you match the demographic companies are looking for, they offer tests to you. Successful tests generally pay $10 or $15 depending on if they are completed on a computer or mobile phone, respectively. There are also some opportunities for higher-paid tests, which are longer, and could be moderated.
Payments are sent via PayPal.