- You must be at least 18 years old.
- You need a PayPal account to receive payments.
- You must be an English or a German native speaker and to be able to speak your thoughts aloud.
- You either need a PC or Mac with the Userbrain Google Chrome extension installed, an iOS device for mobile testing using the Userbrain iOS app or an Android device for mobile testing using the Userbrain Android app
- You need a stable internet connection.
- We suggest using an external microphone for better and clearer audio recordings. (Usually, the headphones coming with your smartphones work fine)