They reward different men, so neither wins for everyone. The eHarmony questionnaire works better for a patient man who knows he wants something serious and will sit down and answer honestly, because the site then does the sorting for him. Hinge prompts work better for a man who has a few specific, interesting things to say, because a woman reacts to one line and that line is your whole first impression. Neither company publishes how many men get dates from either, so test both with your own numbers.

What the eHarmony questionnaire does

Everyone who joins eHarmony starts with its Compatibility Quiz. The answers build a Personality Profile, and that is the input for everything that follows.

Each member then carries a Compatibility Score, based on the quiz results, on a scale from 60 to 140. eHarmony says a score near 100 is a good average and 110 or more means a high level of compatibility. Inside a woman's page, a Compatibility section shows the traits you share and the ones that may cause friction.

For a man, the quiz is the one place where your answers do the work for you. You cannot skip it, and you cannot easily fix it later if you rushed. eHarmony also says every profile must be at least half complete, so a woman you see has put in some effort too.

What Hinge prompts do

On Hinge, a woman reads your photos and your prompt answers, and she likes or comments on one specific thing. Hinge says that is how every match begins, and it says you get to know someone through her prompt answers and personal details.

So a prompt is the one place she can tap and start talking without inventing an opening herself. a dating coach's view of prompts fits that: the answer should leave her something to react to. A short label such as "I love travel" gives her nothing to say. A narrow detail, such as the one trip where you spent three days in the same pastry shop, gives her something to ask about.

The real difference: who does the work

On eHarmony, the software does most of the work after you finish the quiz. It builds a number between you and each woman, and your job is to be honest and to fill in the rest of your page properly.

On Hinge, you do most of the work in how you write. There is no score. A woman has a few seconds, three photos and a few lines, and she decides on what is in front of her.

That is why the same man can do well on one and badly on the other. A man who hates writing about himself but will answer a long list of questions steadily does better on eHarmony. A man who is funny and specific in a single sentence, but would never sit through a quiz, does better on Hinge.

Which one suits which man

eHarmony suits a man who is patient and clear about his goal. At sign-up it asks what kind of relationship you want, with Casual, Serious or Not sure as the choices. A woman who has chosen Serious has told you something before you write a word. A long quiz also acts as a filter on you, because it rewards the man who answers honestly and gives a man who dislikes self-description less to do afterward.

Hinge suits a man with a few real stories. Every conversation starts from something she liked, so two or three specific answers give you more ways to be liked than one good photo can.

If you are in between, the better question is which kind of writing you can do well. Be honest about it.

The traps on each

On eHarmony, the trap is answering the quiz the way you think women want. The site then pairs you with women who suit a man you are not, and they will not like the real one. Answer rested, and answer as you are.

Another trap is treating the score as a verdict. A woman at 105 whose page you like is worth writing to as much as one at 125. The number measures how two sets of answers line up on paper and says nothing about whether you will enjoy her company. Read the friction items as questions to ask.

On Hinge, the trap is a generic answer. "Good food and good company" could belong to a thousand men, and she has read a hundred like it today. Swap each label for the thing behind it: the opinion, the scene, the one trip.

Hinge also has a limit on how many chats can wait on your reply. If too many people are waiting, it stops you sending and receiving likes until you answer or end some. A man who collects conversations and answers none gets stopped.

What each one costs you

eHarmony starts free with a Basic membership. According to its FAQ, a Basic member can take the quiz, view profiles, send and receive initial likes and first messages, and see who visited his page. Premium adds unlimited messaging. It also shows every member's photos and the complete Personality Profile. Read the screen before you pay, since what a package includes depends on the one you choose.

Hinge's regular version is free. Hinge+ and HingeX are optional, and free members can send only a limited number of likes each day. The practical difference is where you hit the wall. On eHarmony it is messaging and photos. On Hinge it is how many likes you can send in a day.

How to test both

Spend one evening on the eHarmony quiz, answering as yourself. Spend another writing three Hinge prompts that each name one real thing. Then run both for two weeks, with the same best photos on each.

Count the women you liked, the likes you got back, the conversations that started and the dates you set. Judge by the dates, and keep the one that gives you more. My advice is that you do not owe loyalty to one tool.

Whichever you use, move from a conversation to a plan within a handful of exchanges. A quiz gets you into the room, and a prompt gets you noticed, but a coffee is where it becomes a date.