- 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 or an iOS device for mobile testing using the Userbrain iOS 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)