Short Surveys
The only way to earn rewards with this app is by completing short surveys. You have 24-hours to complete a survey and after each survey, you complete you will be rewarded with Google Play credits or get cash through PayPal.
One of the biggest problems with the app is the expiring period. If you are online you will be notified when you come back online. But if you are not online for more than the 24-hour window you will not be notified and you will not get rewards.
The last quarter of the year is the best time to earn from your Google Opinion Rewards.
Why?
Because this is the time that most people shop online for the holidays. You can expect more surveys during this season.
Another feature of Google Opinion Rewards is that Google uses these surveys to collect information about a location you have visited recently. If you agree your feedback may be posted on Google Maps.
You can earn between $0.50 and $1 per completed survey.
Audience Measurement Panel
If you are 18 years or older, live in the US, use at least one device that supports Screenwise meter and not have a household member working as a marketer or advertiser you can take part in the Google Opinion Rewards Audience Measurement Panel.
As a volunteer, you will be asked to access the internet using devices installed with Screenwise meter so that Google can learn more about you.
This could be a good option if you browse the internet and watch television often. The more you volunteer the more rewards you earn.
Just keep in mind that Google will have access to a lot of information about you such as the sites you visit, the television shows you watch, your IP address, cookies, etc.
For being a volunteer in the Audience Measurement Panel you have the option to redeem the points you earn at the rate of 100 points for $1.