It's fine
The app is fine for viewing the 3d buildings but does not have mixed reality as stated. Aka, you can't use VR and AR at the same time.
Not enough ratings yet to assess Real Estate.
Real Estate - 3D, AR, VR, MR appears to be a legitimate app. AppsHunter Legitimacy Score for Real Estate is 80/100.
Based on 80 of 100 points across 7 verification signals from App Store and developer data.