Alex Goldberg

Alex Goldberg

Dadi vs Legacy vs YO Sperm vs Fellow: The Best Male Fertility Kits

Last updated on February 16th, 2021 at 06:48 am

If your only reference for fertility testing involves a scene from a TV show where the guy goes into a sad, wallpapered room in a doctor’s office with an adult magazine, then it’s time to upgrade how you think about testing your semen.


It’s  two decades into the new millennium, and you can get just about any test, prescription, or service mailed directly to your door, including fertility tests. A new crop of at-home tests for men like Dadi, Legacy, Fellow, and YO Sperm are making it easier to find out if your little swimmers are, in fact, healthy and ready to start a family. Dadi and Legacy will even store your sperm for later use.


Where traditional fertility clinics can set you back over $1,000, these startups can help you understand your fertility for a fraction of the price. And if you’re planning a family, you’ll probably want to start saving asap for diapers, baby formula, and all the other expenses.


While female fertility has long been discussed openly, male fertility is only now becoming more mainstream and accessible. Given that over 15% of couples can now expect fertility issues when trying to get pregnant, it’s valuable to know about your sperm earlier than later so you can start making a plan in the event of the unexpected. After all, if you’re unable to conceive the old fashioned way, modern medicine offers many solutions. Best case scenario: you part with a small amount of cash today for the peace of mind of knowing you’re fertile and in good shape to start a family.


The best part about modern at-home fertility tests? They’re extremely convenient and easy to use. Let’s examine a few of the most cutting-edge male fertility testing services like Dadi, Legacy, Fellow, and YO Sperm to see how they work exactly. By the end, hopefully you’ll be able to decide if at-home fertility testing is right for you and  which kit is best for your needs.

How do home sperm tests and male fertility kits like Dadi, Legacy, Fellow, and YO Sperm work?

Image Source: Dadi

Imagine you’ve made the decision to test your sperm –  a very sound choice. Well done, sir. But how exactly does it work? With at-hime kits from Dadi, Legacy, Fellow, and YO Sperm, you barely have to leave the living room, er bedroom — whichever sets the mood and allows for a few minutes of privacy.


At-home male fertility kits make the process easy with just five simple steps before you can glean more insight into your semen health. And some will even store your sperm sample as well.

STEP 1: Order a kit.

After a quick registration form online, Legacy, Dadi, Fellow, and YO Sperm all discreetly ship a fertility kit to your door. Enter your home address for the most discretion, or ship it to your office to let the world know you’re ready for fatherhood — completely up to you.

STEP 2: Deposit your sperm sample.

Now for the fun part. Make sure to read the instructions carefully as you’d be surprised how easy it is to contaminate a semen sample. You’ll also want to map out a strategy for sending back your sample ASAP. Each minute your sperm is outside of your body, it’s dying, so time is of the essence when it comes to getting accurate results.


When you’re ready, find something arousing, then carefully deposit those swimmers into your kit. In case that went over anyone’s head: this step requires you to ejaculate into receptacle.

STEP 3: Test your sample or test it yourself.

With Legacy or Dadi, you’ll securely ship your sample to their CLIA certified lab for analysis and wait for your fertility results to arrive in a day or two. With YO Sperm, you can test your sperm yourself immediately using a smartphone attachment and mobile or desktop app. We’ll go into more detail into the pros and cons of each method below.

STEP 4: Review your fertility report.

Results come quickly. With YO Sperm, you’ll have your fertility report immediately upon testing, and you can even view a video of your sperm in action. Dadi provides results and 10 videos of your sperm — all within 24 hours. With Legacy, you should receive results within 72 hours, but no video (sorry visual learners).

STEP 5: Store your sperm (optional, for future use).

Dadi and Legacy both offer options for cryostorage, allowing you to store your sperm for an annual fee. These companies will freeze your sperm using a special media, then keep it in liquid nitrogen at negative 196 degrees celsius, which allows it to maintain a reasonable quality for many years. Note that YO Sperm does not offer any such storage options.

Who should use an at-home sperm test or male fertility kit like Dadi, Legacy or YO Sperm?


Unfortunately, you might just be the 1 in 10 men in the United States who are infertile, and that’s something you’d be better off knowing now than finding out later.


In general, it’s wise to be proactive about your health, especially with something as important as your ability to create a family.


At-home sperm and fertility tests are the right for anyone who is:

  • Curious about their own health
  • Ready to start a family
  • Eager to secure the ability to
  • Recovering from a vasectomy


That last one may seem like an outlier, but when you think about it, a male fertility kit is exactly what you need to verify that your vasectomy worked. Luckily kits from Legacy, Dadi, and Fellow can be used to verify the efficacy of a vasectomy. 


Aside from the use cases of the pro-active and intellectually curious, at-home fertility kits are ideal for busy professionals who’re struggling to conceive. Going in person to get their labs done is time consuming and expensive. And new male fertility startups make it 10x more convenient than any in-person clinic anyway.


Companies like Dadi, Legacy, Fellow, and YO Sperm not only spare you the awkwardness of discussing your semen with another human being face to face, they’ll also save you a few bucks, with kits starting as low as $69.95. That’s about the cost of most Americans’ co-pay for a doctor’s visit, and most lab tests will set you back anywhere from $200 – $300. Unfortunately only ~25% of health plans offer any coverage at all for semen analysis. When you factor in the cost and time savings, the question becomes: which at home test is best?



What’s the best at home at-home fertility test for men?


Below we compared Dadi vs Legacy vs YoSperm vs Fellow to help you understand.


Best At-Home Male Fertility Kits: Dadi vs Legacy vs Yo Sperm vs Fellow

Cost of At-Home Fertility Kit$199  $174 with code FINVSFIN25 for $25 off.

$195 – $3,995

*Lifetime package pricing available upon request

$69.95$189 $169 with code FINVSFIN20 for $20 off.
Viles per Sperm Deposit3Up to 4, depending on volumeN/ADepends on volume
Location of Semen AnalysisCLIA certified LabCLIA certified LabAt home via smartphoneCLIA certified Lab
Fertility Results Turnaround Time24 hours72 hoursImmediate24 hours
FDA Approved?✔️✔️✔️✔️
Where is it available?All 50 statesAll 50 statesAll 50 states

All 50 states EXCEPT:

  • MD
  • NY
  • PA
  • RI
Video of Sperm Included in Report?✔️✔️
FSA/HSA Package Available?✔️✔️✔️
Access to licensed medical professionals?Dadi offers access to a registered nurse to discuss next steps for an additional fee.Some Legacy packages include access to a fertility specialist.
Protected by two-factor authentication?✔️✔️
Able to verify a vasectomy (post-vas)?✔️✔️✔️

Now that you have a general lay of the land when it comes to at-home male fertility kits, let’s dive a bit deeper into each provider so you can see which makes the most sense — Dadi, Legacy, Fellow, or YoSperm.

Review of Dadi's Fertility Kits for Men


Dadi is on a mission to make male fertility accessible to all. Its founder, Tom Smith, started the company after a friend’s cancer diagnosis prompted a rushed trip to a fertility clinic to freeze his sperm before he became infertile. Thanks to his clever solution (and several iterations since!), testing and storing your sperm has never been easier.


With Dadi, you’ll simply order a fertility kit online, wait a few days until it arrives, then deposit your sample at home and refrigerate. When you’re ready, you can drop it off at any FedEx shipping center, and within 24 hours of receiving your sample, a lab technician will evaluate your sample and send a personalized fertility report that overviews your sample.


Metrics include: volume, count, and concentration. You’ll also receive a video of your actual sperm if you really want to nerd out. Purchasing a Dadi kit comes with one year of cryo-storage via their partner, the  New England Cryogenic Center, so your sperm will be available when and if you choose to use it.


When it comes to pricing, Dadi sits in the middle of the scale between YO Sperm and Legacy. To test your sperm, plus receive one year of free storage, you’ll fork over $199. Use code FINVSFIN25 at check out to drop the price  to $174.


After the first year of storage, they charge just $99 per year to continue to keep your semen in their labs.

Since raising $7 million to develop a modern day fertility testing and sperm storage product, Dadi has gained quite a bit of traction. While you can’t judge a book by its cover,  we think Dadi’s branding and easy-to-use website scores it a few extra points as well.


Overall it offers an enjoyable user experience at a reasonable price, especially for men interested in storing sperm for later use. And remember to use Dadi coupon code FINVSFIN25 to get $25 off.


Dadi Kit Unboxing: How was my own experience using Dadi?

Dadi gifted me a free fertility kit to try for myself, and I jumped at the opportunity! Overall the experience was super straight-forward, and dare I even say fun? It’s rare to have a legitimate excuse (for science!) to masturbate, so that was a first  😂


Jokes aside, the only potentially tricky part to be aware of is timing your semen sample collection and drop off, since every second sperm exists outside of the body it is dying  and degrading in quality. Thus I was careful to rush my sample immediately to my local FedEx center for same day priority delivery. Dadi provides a prepaid shipping label and very clear step by step instructions, just don’t lose track of time and accidentally miss the last delivery cutoff of the day.


I dropped off my kit on Friday evening, and by Sunday morning I had an email letting me know my analysis was ready. The report let me know how my sperm compared to other men by percentile in terms of count, concentration, volume, and motility. If you’re curious what my sperm looks like on video, here’s a sneak peek — look closely you’ll see a few moving around:



I have to admit, it’s nice having peace of mind about my semen. Naturally the report left me with additional questions, and Dadi is happy to connect you with a nurse to discuss your diagnostics. Overall the service was

Review of Legacy for Male Fertility

Photo Source: Legacy

You trust the Swiss with your money, but should  you trust them with your sperm?


Legacy, a Swiss-created and Harvard Innovation Labs-incubated startup, is trying to change the way people, especially men, think about fertility. Legacy’s founder, Khaled Kteily, started the company after witnessing firsthand how uncomfortable getting your sperm tested can be. 


Legacy won TechCrunch’s Startup Battlefield competition at Disrupt Berlin 2018, and since then has been investing in its sperm analysis, overall improvement, and cryogenic storage services. 

Legacy offers three different packages, depending on your needs.

Legacy Packages
For Today Package: $195 (Analysis + Short Term Storage Only)
  • You get one deposit, a fertility analysis report, personalized lifestyle recommendations and a designated Client Service Advisor to run you through the process and explain your results to you. Cryogenic storage is available starting from $100/year, and complimentary short-term storage is included so that you can decide after receiving your results. 
  • Currently, the For Today package is also offered as FSA and HSA-eligible, but to be eligible, it is offered without any short-term storage.
For Tomorrow Package: $995 (2x Analysis & 5 years of Freezing)
  • You get 2 deposits, a fertility analysis report, personalized lifestyle recommendations, a tele-health appointment, a designated Client Service Advisor to help you with any questions you might have, plus 5 years of cryogenic storage included with Legacy's multi-geography storage, that protects your sperm by storing it across multiple locations. 
Forever Package: Price Available Upon Request (3x Analysis & Lifetime Freezing)
  • You get 3 deposits, a fertility analysis report, personalized lifestyle recommendations, a dedicated fertility specialist, a dedicated Client Service Advisor, a transfer of your sperm anywhere in the world, plus a lifetime of cryogenic storage included with Legacy's multi-geography storage, that protects your sperm by storing it across multiple locations.
Fertility kits from Legacy

Once you’ve selected your package, you’ll receive your kit at home in just 24 hours after ordering. From there, you’ll deposit your sample and schedule a time when Legacy can come collect your sample at home, free of charge.


Your sperm will then be analyzed for motility and morphology, and you’ll get to read all about it with their six-page report. If you’re more of a visual learner, you’re out of luck because Legacy does not provide a live video of your sperm with the report. Shucks.


Should you choose to freeze your sperm, Legacy does everything they can to protect it. They’ll split your deposit into four – two tanks each in two geographies – and store them in disaster-proof facilities with 24/7 security so your sperm (and you!) can sleep safe and sound. And just to make you feel extra secure, Legacy is HIPAA and GDPR-compliant.


One of the biggest differences between Legacy and its competitors is the personal touch they add with a designated Client Service Advisor who can help answer questions, support you in what could be an emotional process, and provide personalized recommendations for specialists, and even for your lifestyle.


Legacy’s variety of packages, plus concierge-like service, make it a great choice for someone who craves a little more guidance throughout the process of fertility testing and sperm storage. Think of them as the concierge for your future children.

YO Sperm Review

Photo Source: YO Sperm

What happens when your smartphone turns into a hand-held sperm testing laboratory? Yeah, there’s an app for that, and it’s called YO Sperm.


If you’re looking for the easiest and most private way to test your sperm, YO Sperm may indeed be yo answer.


YO Sperm uses a desktop or mobile app, plus a smartphone attachment to take a video of your moving sperm and analyze your fertility. If that doesn’t sound futuristic, we’re not sure what kind of sperm testing you’re looking for. Plus, for just $69.95, it’s probably the same price as your next DIY project.


Here’s how YO Sperm works:

  1. Order the kit, including your new YO device – this is what analyzes and records the sperm – plus all the tools you need to test two of your samples.
  2. Deposit your sample into the cup. 
  3. Follow the steps provided to test your motile sperm. 
    1. It’s almost like a little science experiment! Mix up your sperm with their mixing agent, pick some up in a pipette, drop it on the card, and insert into the YO device. 
  4. Wait for the results! Curious if sperm testing by smartphone actually works? YO Sperm results are proven to be >97% accurate, and you can even watch a live video of your sperm in action. Plus, see how you stack up against other YO Sperm customers with your YO score. Didn’t think fertility was a competition? Think again.

If this all seems a little too good to be truu, don’t worry, these guys are experts. YO Sperm was developed by Medical Electronic Systems, a company that has been producing commercial-grade semen analyzers for over 20 years.


YO Sperm is FDA approved and over 4000 units have been installed in leading research labs, premier hospital systems, the US military, and fertility clinics globally.


YO Sperm is definitely for the tech-savvy guy who wants to get a little nerdy with their sperm at home. YO Sperm does not offer any sperm storage, however, so if you’re just looking to check out how healthy and active your sperm is, then why not give YO Sperm a go?

What are customers saying online about Dadi vs Legacy vs YO Sperm?

For a full account of a Dadi experience, check out James’ story on Inverse. He walks you through the step by step process of ordering the kit, providing and dropping off his sample, and getting his results.


Dadi also predominantly features real customer experiences on their website, giving you a curated peek into how much customers like the overall user experience, customer service, and affordability.


For Legacy, their standout customer service is what brings in the high praise from customers in the testimonials features on their site. Customers love how simple the product is to use and feel secure knowing their privacy and samples are well protected.


Typically, reviews of Amazon products can be almost comical. Funnily enough, not when it comes from a fertility testing product. At-home testers rave about YO Sperm on Amazon, where it receives a 4-star rating.

YO Sperm customers love how easy it is to use, plus it kind of feels like a science experiment.

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The Verdict: Which at-home male fertility test is best -- Dadi, Legacy, or YO Sperm?

With slightly different offerings at various price points, it’s hard to pick a clear winner. Fertility testing and sperm storage is a personal, let alone emotional, process and shouldn’t be taken lightly. You want to choose a service that you can trust when planning your future.


The first question to ask yourself is: do you want to cryogenically store your sperm, or just test once without storing for later use?


If you want to store your semen, your two options are Dadi and Legacy. With Harvard credentials, a TechCrunch Startup Battlefield win in their back pocket, highly personalized service, and a variety of testing + storage options to choose from, Legacy is a fantastic pick for at-home male fertility testing. Their packages are easy to understand and suitable for all use cases, whether you’re just looking for a one-time analysis or want to store your sperm indefinitely. With prices starting at $195, it’s a smart investment for a potential lifetime of comfort.


Dadi is an equally wallet-friendly and versatile option for both analyzing and storing your sperm. Their solution is FDA approved, and they provide a report that’s easy to digest, so you and your partner can move forward with confidence when planning a family. The first year of storage is free, and should you have questions after seeing your initial lab results, Dadi can connect you with a nurse by phone 24/7 to advise on next steps, local fertility centers, IVF, and more. They also take patient privacy and test accuracy very seriously — both of which we appreciate. Don’t forget to use coupon code FINVSFIN25 for $25 off (exclusively for Fin vs Fin readers 🙂 



We also like Dadi and Legacy because they take security very, very seriously. Both offer two-factor authentication to ensure privacy and confidentiality. Legacy even integrates with Persona to add an extra layer of security. Dadi, Legacy, and Fellow all hold themselves to the highest standard of clinical accuracy, meaning they exclusively analyze your sperm in CLIA-certified labs. There is some nuance about each lab that each provider claims sets them apart, but overall each promise similar levels of accuracy as any in-person clinic. If you’re curious to do more research on each:


Thus Fellow, Legacy, and Dadi are most often recommended by doctors because the results are the most credible. If you bring results from these at-home kits to your physician, they are likely to take them at face value without asking you to re-run the tests in a CLIA-inspected lab. Thus Fellow, Legacy, and Dadi can all save you time and money in the long-run. (Using the code FINVSFIN20 at checkout for Fellow will save you $20 on their kit immediately). Recall that Fellow doesn’t offer sperm storage, however, so if that’s important to you, then I’d go with Dadi or Legacy instead.


While YO Sperm touts the most innovative technology, it’s hard to fully endorse something that plugs into your phone for learning if you’re infertile. And although we may be a bit old-fashioned, we’re not sure you’d feel 100% confident with results that don’t even pass through the hands of a lab technician. Note that if you’re looking to verify the efficacy of a vasectomy, YoSperm isn’t recommended.


If you’ve had experience with any of these (or other!) at-home fertility tests, we’d love to hear about your experience in the comments below.

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