eharmony is a dating site and app built around compatibility. You answer a Compatibility Quiz when you join, the answers become a Personality Profile, and matching starts as soon as the quiz is finished. Each person it shows you carries a Compatibility Score. You connect by liking a profile, and if the other person likes you back, it is a match. It suits men who want a serious relationship and are willing to answer honestly.

The quiz comes first

Every new member takes a Compatibility Quiz. It covers personality, interests and how you communicate. It takes longer than a swipe app asks of you, and that is part of the design. The site wants to know who you are before it shows you anyone.

The advantage for a man is that the filter works both ways. A woman who completed the same quiz has told the site what she is like and what she wants. That is more than a photo gives you.

The risk is rushing it. Answer as you actually are, not as you think she wants. Answers shaped to impress produce matches who suit a man you are not.

What the Personality Profile does

The quiz answers produce a Personality Profile, and eharmony says matching starts as soon as the quiz is finished.

Treat the profile as an input, not a verdict. It describes how you answered on one day, and it cannot tell you how you act on a Tuesday when a date runs late. Its real use is to put you in front of people whose answers fit yours.

The Compatibility Score

Each match carries a score. eharmony says scores run on a scale from 60 to 140, that around 100 is a good average, and that 110 or more signals a high level of compatibility. Under 100 is not a rule-out.

Use it as a starting sort, not a ranking of women. A 105 with a woman whose page and photos you like deserves a message just as much as a 120. The score measures how your answers line up. It does not measure chemistry, and chemistry is what a first meeting is for.

Discover and how you connect

Matches appear in a Discover list, which shows every member who fits your search preferences. New members are added as they join, so the list changes over time and it is worth checking more than once.

To connect, you Like a profile. If she Likes you back, it is a Match. That mutual step is the same idea as on the swipe apps, only the pool you are choosing from has already been narrowed by compatibility.

a dating coach's advice for any app applies here: be choosy about whom you like. Liking everyone makes your own list noisier and gives you more conversations you do not want.

Starting the conversation

You can open a chat with Icebreakers, where each of you picks between pairs of photos, or with Smiles. Both are a lighter way into a first exchange than writing a cold opening line.

Use them, then follow with something real. Pick one specific thing from her page and ask about it. Keep it short and easy to answer. A line that only a person who read her page could have written does more than any clever opener.

Do not let the conversation drift. After a few exchanges, name a place and a day. The site describes its members as looking for serious relationships, so a clear invitation fits the setting and is not pushy.

What is free and what Premium adds

Basic membership is free. It lets you take the quiz, view profiles and send and receive initial likes and first messages.

Premium unlocks unlimited messaging, all photos and seeing who viewed you. If you cannot see her full set of photos or keep a conversation going, that is the gap you are looking at.

My view of paid features is that they multiply what you already have. So take the quiz, finish your page, send a few first messages on the free version and see what you get. If conversations are starting and you hit a wall, paying is a sensible next step. If nothing starts, your photos and first lines are the fix, not a subscription.

Who eharmony suits

The site says its members are looking for serious relationships and describes its focus as lasting love rather than casual dating. That is a real difference from the swipe apps, where intentions are mixed.

If you want a relationship, that is a plus, and a good reason to put real effort into the quiz and your page. If you want something casual, you will find fewer women who want the same, and you will waste your time and theirs. Be honest about what you want, because a mismatch there wastes everyone's time.

How to get more from it

Do the quiz when you are rested and unhurried. Choose photos that show your face plainly and a bit of your real life. Write two or three specific lines about what you do and what you would like to do with someone.

Then message women whose pages you liked, quickly and with a clear invitation. Watch your numbers: how many of your likes become matches, how many matches reply, how many replies become a plan. Change one thing at a time, and give each change a few weeks.