The goal is simple: give you the clearest possible picture of your fertility, so every decision gives you the best chance of getting pregnant.
Stress, illness, PCOS, age, thyroid function; any of these can delay, advance, or suppress ovulation entirely from one cycle to the next. No app can see that. Bloom can.
Ovulation is the goal, but what leads up to it matters just as much. For women with irregular cycles, unexplained infertility, or PCOS, the picture before ovulation is where many answers are. Bloom documents all of it, every day.
Ovulation is visible to Bloom. Your clinician confirms ovulation, during its short 12 - 24h window; not a hormone signal, not a prediction. For most women, this is often the first time they have known with certainty whether ovulation actually occurred that month.
Each month, one follicle takes the lead and grows roughly 2mm per day. Bloom tracks its exact size as it develops, so you (and your clinician) can see whether it's developing on schedule, whether it looks mature enough to release an egg, and whether it actually ruptures.
Even if ovulation happens perfectly, a fertilised egg still needs a receptive lining to implant. That means at least 7mm thick, with a specific layered texture. Bloom tracks this daily. A thin or poorly timed lining is a common and often undiagnosed reason for failed cycles, and no blood test can detect it. Only imaging can.
Both ovaries are assessed every day. Follicle count, distribution, and ovarian volume together give a direct picture of your reserve and how your body is responding this cycle. For women with PCOS, a high follicle count and polycystic appearance will be visible and documented. For those with lower reserve, that will show too.
Many women trying to conceive have cycles that look regular on a calendar but are not. Late ovulation, anovulatory cycles, luteal phase defects, or structural issues can go undetected for years. Daily imaging makes these patterns visible, and your clinician's report gives you the information necessary for decisions with your doctor.
Bloom is also used by women with PCOS, endometriosis, irregular cycles, and those undergoing IVF or fertility treatment. The same daily imaging, our clinician focus adapted to your situation, whatever it may be. PCOS & endometriosis → · IVF & treatment support →
They answer different questions. Here is what each one tells you — and where each one stops.
Predicts from last month's data. Your follicle this month didn't read the app. There is no information on whether ovulation occurred, or the health of the structures surrounding it.
Tells you the signal came, not that ovulation followed. Ovulation can have an early or late timing compared to the hormone surge, if it occurs at all. Can't see inside your body.
If a rough window is enough, a tracker and strip will do. Bloom is for when you need to know, not estimate.
LH surge strength declines with age. In women over 35, the hormone surge ovulation strips detect can be shorter, lower in peak, and easier to miss. The same is true with certain hormonal conditions. A faint surge doesn't mean ovulation didn't happen, and a strong surge doesn't guarantee it did. Imaging is the only way to know what actually happened.
Ready to start monitoring your reproductive health? Register your interest or send us your questions.
Bloom will launch following formal CQC approval. You will then be contacted first to discuss your needs and get priority access to our services: no commitment at this stage.
Questions, or cost is a barrier? Let us know.
Everything you need to know about Bloom for trying to conceive. Ask us anything else you would like to know.
Everything you might want to know before joining the waitlist.
Find out exactly what we send you and what the day to day with Bloom is like.
What Bloom documents for women with a reproductive health condition, and how it helps get to an answer faster.
Daily imaging during stimulation, FET prep, IUI timing, hormone therapy response.
Is the scan comfortable? When do I start? What if something unexpected is found?