Understand what a survey reward is
Survey platforms may provide cash, points, vouchers or store credit in exchange for research participation. These are not equivalent. In Google Opinion Rewards for Android, the reward is Google Play credit; it should not be treated as a cash payment to a bank account. Availability and payment methods can vary by country and product. Read the official explanation before registering.
The number of surveys is not fixed
Studies seek particular user profiles. You cannot expect a survey every day or acceptance into every survey. Initial questions may determine eligibility. Do not misrepresent your age, job or habits to receive more surveys; inconsistent answers can affect research quality and your account. It is unrealistic to treat this model as a replacement for a regular salary.