What Jack Fertility does

Jack Fertility Ltd is a UK-based healthtech startup founded in 2023 in Oxford by Nick Shipley and Lily Elsner. The company provides a home-to-lab postal sperm testing service that allows individuals to measure five sperm parameters — count, concentration, motility, volume, and morphology — without visiting a clinic. Customers self-collect at home, return the sample via any Royal Mail postbox, and receive lab-analysed results digitally within 2–4 days of sample arrival.

The platform is built around SpermShield™, a proprietary preservation fluid that keeps semen samples viable for up to four days at room temperature, removing cold-chain requirements and enabling postal return through standard UK infrastructure. Computer-Assisted Sperm Analysis (CASA) performs automated measurements, and proprietary correction models estimate original motility and morphology at production time, validated to 95%+ reproducibility on direct measurements and 99% agreement with the WHO 4% morphology threshold. Sample analysis occurs at Jack's CL2-certified laboratory at the Wood Centre for Innovation in Oxford. An AI-powered feature, Ask Jack, provides plain-English explanations of results and answers lifestyle questions, built with Oxford scientists using peer-reviewed research.

Revenue is generated through a product-led DTC e-commerce channel selling a Sperm Test at £169 one-time or £99 per test via the Jack Quarterly subscription (a minimum two-delivery commitment, then cancellable), plus a separate Snip Check® post-vasectomy confirmation test at £69. Target customers span men planning for fatherhood, health-conscious individuals using sperm as a general-health biomarker, post-vasectomy patients, and LGBTQ+ family planners, with B2B partnerships emerging in employer wellness benefits and clinician referral channels. Distribution is restricted to mainland Great Britain. The company has raised over £500,000 in pre-seed funding led by Fuel Ventures in October 2025 (with an earlier 2023 round led by Founders Factory) and currently operates with fewer than 10 employees.

Name

Jack Fertility

Legal name

Jack Fertility Ltd

Website

https://jackfertility.co.uk

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1–10 employees

Short description

Jack Fertility is a UK healthtech startup offering home-to-lab postal sperm testing via its proprietary SpermShield™ preservation fluid and Oxford laboratory. It serves men planning fatherhood, post-vasectomy patients, employer wellness programs, and LGBTQ+ family planners across Great Britain.

Ownership category

akta.pro rank

Product category

At-Home Diagnostic Testing

SIC

In Vitro & In Vivo Diagnostic Substances (2835)

akta.pro primary industry

Prenatal, Newborn & Reproductive Diagnostics (NIPT, IVF/PGT, newborn screening) (HLAAALAJ)

akta.pro secondary industry

Genetic, Cytogenetic & Prenatal Screening IVD (HLAHAAAI)

Keywords

• Home sperm testing
• Postal semen analysis
• At-home fertility testing
• In vitro diagnostics
• Post-vasectomy testing

Headquarters

HQ city

Oxford

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Technology or R&D, Marketing or Sales, Personnel, Infrastructure

Revenue model

1. Sperm Test (One-time): One-time purchase of postal sperm test kit with lab analysis and results dashboard access. Single test at £169.
2. Jack Quarterly Subscription: Recurring subscription delivering test kit every 3 months at £99 per test (save £70). Minimum two deliveries required, then cancel anytime. Subscription aligns with sperm's 74-day regeneration cycle for meaningful change tracking.
3. Snip Check®: Post-vasectomy sperm confirmation test sold as one-time purchase at £69. Provides yes/no answer on sperm presence after vasectomy.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Jack Fertility sells home-to-lab postal sperm testing kits that let men collect a semen sample at home, return it via any Royal Mail postbox using proprietary SpermShield preservation fluid, and receive lab-analysed results from its Oxford laboratory measuring five key sperm parameters. It also offers a post-vasectomy confirmation test (Snip Check) and a quarterly retest subscription.

Product overview

Jack Fertility is a UK-based healthtech startup offering home-to-lab postal sperm testing services. The core product is the Sperm Test postal kit (£169 one-time or £99 quarterly subscription), which measures five key sperm parameters (volume, count, concentration, motility, morphology) using proprietary SpermShield™ preservation technology, with results analyzed at their Oxford laboratory and delivered digitally within days. The second product, Snip Check® (£69), is a post-vasectomy confirmation test. An AI-powered feature called Ask Jack provides personalized explanations of results. The company was founded in 2023 and secured £500k pre-seed funding in 2025.

Differentiator

Problem solved

Functional benefit

Products and services

• Sperm Test A home-to-lab postal sperm test measuring five key sperm parameters (volume, count, concentration, Estimated Original Total Motility, and Estimated Morphology Status) using proprietary SpermShield preservation technology, with results delivered digitally from the Oxford laboratory within 48 hours of sample arrival. For men/people with sperm wanting a private baseline check of fertility and overall health.
• Snip Check A post-vasectomy confirmation mail-in sperm test that determines whether a patient is sperm-free after vasectomy, providing a simple yes/no answer without requiring a clinic visit. Results within 24 hours of lab receipt. For men who have had a vasectomy and need confirmation testing.
• Jack Quarterly A quarterly retest subscription for the Sperm Test at £99 every 3 months (saving £70 vs one-time), designed to track changes in sperm health over time aligned with the 74-day sperm regeneration cycle. Minimum two deliveries, then cancel anytime.
• Ask Jack An AI-powered conversational assistant included with every Sperm Test that reads real lab results and lifestyle survey data to answer unlimited questions about sperm health in plain English, built with Oxford scientists using peer-reviewed research.

Quantifiable outcome

• Results available 2-4 days after posting sample
• +4 more outcomes

Named customers4 records

Segments6 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature5 records

Scale indicators5 records

Recent moves6 records

Expansion highlights8 records

Direct peers

• Legacy: US-based direct-to-consumer male fertility testing company offering at-home sperm analysis and cryopreservation with similar subscription model. Operates a comparable postal lab-testing business model and is the most well-funded direct competitor in the male fertility DTC category.
• YO Home Sperm Test (Medical Electronic Systems): FDA-cleared at-home sperm test that pairs a smartphone-based motility analysis device with an app. Targets the same male fertility testing use case as Jack Fertility with a device-based (vs postal-lab) approach, making it a directly comparable alternative in the home testing category.
• ExSeed Health: UK- and EU-based male fertility company offering at-home sperm testing kits combined with lifestyle intervention programs. Targets the same male preconception health segment with a similar DTC subscription model and is a close direct peer in the European market.
• Mojo (formerly Mojo Fertility): European male fertility platform offering at-home sperm testing combined with personalized improvement plans. Operates in similar geographies (UK/EU) and pursues a comparable DTC-then-B2B GTM model targeting men planning for fatherhood.

Emerging players

• Fellow: DTC male fertility supplement and testing company targeting men trying to conceive. Overlaps with Jack's target customer and value proposition (proactive male reproductive health) but emphasizes supplements over lab diagnostics.
• Hertility Health: UK-based at-home female fertility and hormone testing company serving a complementary (rather than directly competing) reproductive health segment. Operates the same DTC postal-testing playbook Jack uses, and is the most obvious cross-sell or partnership peer in the UK market.
• Daye: UK-based at-home reproductive and gynecological health startup offering postal diagnostic kits. Comparable business model (DTC postal testing with proprietary sample preservation) and UK regulatory positioning, with overlap in reproductive health customer base.
• Sandstone Diagnostics (Trak Fertility): Developer of the Trak at-home male fertility test, a device-based sperm concentration analyzer. Overlaps with Jack's customer base and the male fertility DTC category, though uses a hardware approach rather than postal lab analysis.

Regional players

• Posterity Health: US-based male fertility clinical and testing platform offering at-home semen analysis with telehealth and treatment. Comparable value proposition (home-based male fertility testing) but operates in a different geography and combines testing with clinical services rather than pure DTC.

Others

• Carrot Fertility: Global employee fertility benefits platform that partners with providers like Jack for male fertility benefits. Represents a potential B2B distribution channel rather than a direct competitor, but increasingly bundling male fertility solutions makes it strategically relevant.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@jackfertility2841
• TikToktiktok.com/@jackfertility?is_from_webapp=1&sender_device=pc
• LinkedInlinkedin.com/company/jack-fertility

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds2 records

Investors6 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Jack Fertility