Become closer to your partner.

Learn about yourself.

Instant Compatibility Checker Kit

  • "Instant Chemistry is essentially a 23andMe for your relationship."
    Kayla Harvard-Toronto, Canada
  • "It's crazy, I literally spat into a cup...and then somehow they knew my entire relationship make-up and fabric."
    Emily-New York, USA
  • “After going through this fantastic experience and learning more about ourselves and each other, I can truly say that I am happy I decided to take the test. Science is amazing.”
    Maria-New York, USA
  • “I was very skeptical about this test, but having gone through the results with my boyfriend, I’m pretty impressed.”
    Katie-London, UK
  • “All in all, it was an interesting experience and I’m glad I took part. It did cause me to reexamine parts of our personalities I’d always taken for granted and look at them in a new way.”
    Cynthia-San Diego, USA
  • “My husband and I went through the results two weeks ago and in hindsight, they have brought us closer together.”
  • “To my delight I found our results in my inbox! My boyfriend messaged me a little earlier that he is thoroughly impressed with the detailed report and so am I.”
    Nazuki-Los Angeles, USA
  • "This was really interesting!"
    Sarah-Portland, USA
  • “Using the DNA sample kit was easy and fun. If the results of our test are any indication then this type of product could be beneficial in helping people find their perfect match.”
    Jon-Toronto, Canada

Relationship Compatibility

Instant Chemistry uses cutting-edge scientific research to bring you the latest advancements in relationship science. Our Couples Kit will provide you with a customized relationship roadmap that will help you keep your connection strong. We help you examine your relationship along three measures of compatibility: biocompatibility, neurocompatibility, and psychological compatibility. Our solution is a multipronged, comprehensive compatibility assessment that provides results that are understandable, meaningful and most important, point the way toward lasting love.


Discover what you naturally do best

Explore how your genes may impact your relationship. Improve your self-awareness and find a new way to explain who you are to your partner. Understanding your behavioral predispositions can help you successfully deal with relationship challenges, solve problems and allow for better communication. Learn More

Learn how your partner differs from you

We test for complementary genes that have been associated with higher levels of physical attraction and long-term relationship success. We will assess your biocompatibility, neurocompability and psychological compatibility levels in and explore their relationship implications for you. Learn More
Psychological compatibility  

Improve your relationship satisfaction

Your results, will enlighten you as to how you match with your partner whose results may differ on some factors and perhaps overlap on others. Your personalized report provide a guide to improve, strengthen and enhance your relationship. Learn More


A long-term relationship is important to you. Science has a lot to say about that, especially if you want to ensure your unceasing compatibility. Relationships grow, but your DNA and core personality stay constant. Find out the underlying compatibility between you and your partner to help your relationship grow.

Step 1

Step 1: Order

Simply start by ordering a kit for you and your partner from us.
Step 2

Step 2: Register

Be sure to register your kit when you receive it in the mail. We won't be able to process your results if you don't!
Step 3

Step 3: Send

Spit in the tube, pack it up in the included addressed envelope, and send it back.
Step 4

Step 4: Receive

Login to our secure portal, complete your personality assessment, and view your compatibility results.

Your Privacy is Important

Your DNA sample is submitted anonymously to our labs. After processing, your sample is destroyed in accordance with legally mandated regulatory procedures.

As seen on Couples Therapy

As seen on The Insider

Nurture your relationship. Find out your compatibility now.

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