Truth Social, the would-be Twitter competitor created by Trump Media and Technology Group, remains unavailable on the Google Play store.

Google said the app lacks effective systems for moderating user-generated content, which violates the store's terms of service.

"On Aug. 19, we notified Truth Social of several violations of standard policies in their current app submission and reiterated that having effective systems for moderating user-generated content is a condition of our terms of service for any app to go live on Google Play," the tech company, which is owned by Alphabet, told CNBC in a statement Tuesday.

Axios first reported the Google statement.

The restriction means that Android users, who make up 44% of smartphone users in the U.S., can't download the app. Google will not let the app go live until the content issues are addressed. Truth Social acknowledged Google's concerns and said it would work on addressing these issues, according to Axios.