You earn money by completing surveys in the app. Each survey shows its cash reward before you begin. Once you finish a survey, the money is added to your account balance. You can withdraw your earnings through PayPal or gift cards once you reach the minimum payout amount.

Yes, Eureka is completely free to download and use. The app works on both iOS and Android devices. You only need a steady internet connection and a valid email address to sign up. There are no hidden costs or subscription fees.

Payout requests are typically processed within 24 to 48 hours. After approval, PayPal payments are sent immediately, while gift card codes are emailed to you. Processing time may be slightly longer during weekends or public holidays, but you will get a notification once your payout is sent.

Surveys are created for specific groups based on factors like age, location, or interests. If you do not match the intended profile, the system may exclude you. This does not affect your account, and you can simply try another survey. Some disqualified surveys may still give you a small bonus for your time.

Eureka is available in more than 30 countries, including the United States, the United Kingdom, Canada, and Australia. The number of surveys you receive depends on your location, profile, and survey availability. Usually, users get between 2 and 10 surveys each day. You can increase your survey count by fully completing your profile and turning on notifications.