Under EU/UK GDPR, data processing must have a lawful basis. You are obviously not getting anyone's consent to process their data - combination of name city and age is quite specific personal information.
Also, even if processing people's name age and city without consent were lawful, per GDPR you must remove people's personal information from your app permanently upon request and probably ensure they are never added again.
How do you propose your application will be compatible with GDPR, or will you ban users from adding European men?
Also, even if processing people's name age and city without consent were lawful, per GDPR you must remove people's personal information from your app permanently upon request and probably ensure they are never added again.
How do you propose your application will be compatible with GDPR, or will you ban users from adding European men?