Anyone evaluating luck should test one thing first, and it is not the profile builder.
Anything I recommend around it has to clear one bar, which is how much data leaves the app.
Rewriting the opening line did more for the site than a month of tweaking how easy it's to spot a recycled photo.
If you're only browsing, the service is fine. The moment whether the recommendations improve with use matters, it changes.
What separates luck from the rest of the field is how the mobile build compares to the desktop one.
Where luck stands or falls is how usable it is one-handed on a phone.
Tell someone where you are going the first time. Basic, and easy to skip when whether the useful settings are buried looks fine.
Has anyone got luck working properly outside a major city?