This "fast and easy" surveying process has been criticized due to contention over the validity of results as well as concern over the privacy and security of the app users' data.

[26] In July 2021, the app was made available to Czech Republic, Indonesia, Ireland, Russia and South Korea.

The drop-down menu navigates users to their Reward history, Google Play account, or Settings.

Each task consists of multiple pages, with the first explaining what the survey is about, followed by a series of multiple-choice questions, and finally one displaying the value of Google Play credits earned.

[30][6] The application provides a surveyor with a large group of people to answer market research questions.

[31] When users take a survey using Google Opinion Rewards, their answers are combined with the large pool of other respondents and shared with the market researcher.

The surveyor benefits from the large pool of surveyees achieved through the financial incentive and the wide demographic available online, in addition to the fast return of results, cost effective price and convenient surveying methodology.

The two common concerns regarding Google Opinion Rewards include the privacy and security of surveyee information and the validity of results.

[5] However, this quick and efficient method to increase the sample size raises the concern of validity, as people are perceived to not pay attention when partaking in an online survey.

[6][37] In addition to the suspected satisficing and forging of data for financial reward, surveyors have been critical of the program's 'random' sampling methodology or rather the lack thereof.

[37] As noted by social scientist Helen Ball, "It is not easy to use random sampling techniques with online surveys as there is no systematic way to collect a traditional probability sample of the general population using the internet"[38] To overcome these issues, Google has introduced measures to enhance survey credibility and reliability.

[39] Addressing the concern regarding participants attentiveness, Google has introduced 'Attention checks' to deter careless responding behavior and forging of data.

"[40] Furthermore, the simple, "fast and easy" design adopted by Google for the online surveys has been recognised by economists Riccardo Vecchio, Gerarda Casoa, Luigi Cembaloa and Massimiliano Borrelloa as an effective display to ensure questions are understood and answered correctly, further enhancing the reliability of the results.

[44] While Google clearly states its privacy policy, it has not disclosed the security measures in place to protect the app users' data that has been collected as it may contain private information that is highly demanded.

Therefore, the security is especially of concern due to the information being stored online, which is susceptible to being intercepted or accessed by cyber criminals during a cyberattack.