Your cycle data belongs to you. Track it privately, completely, on your own terms.
Purpose-built trackers for menstrual cycles, PCOS, perimenopause, and fertility — with data privacy that app stores don’t offer.
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Your data. Clear deletion policy. Never sold. Exportable at any time.
Period apps have a data problem you’re probably not thinking about
The most popular cycle tracking apps are free because they monetize your data. Flo, Clue, and similar apps have been documented sharing health data with third parties, including Facebook. Some updated their privacy policies after the Dobbs decision — but policies can change, and what’s shared today may not be what was shared last year.
This is not a conspiracy theory. In 2021, the FTC took action against Flo for sharing period and pregnancy data with third-party analytics companies despite promising not to. Health data is valuable, and free apps need to be profitable somehow.
Beyond the privacy issue, most period apps are bad at the data you actually need if you’re dealing with PCOS, perimenopause, or fertility concerns. They’re built for people with predictable 28-day cycles who want to know when their period is coming. If your cycles are irregular, if you’re tracking LH surge and basal body temperature and PCOS symptoms, or if you’re approaching perimenopause and trying to understand what’s happening — the standard app doesn’t give you the granularity to see patterns.
What you need is a tracker that logs what you log, shows it back to you in a way that reveals patterns, and stores it somewhere you actually control.
Why DDH works for cycle and fertility tracking
DDH’s wellness trackers are built as interactive HTML tools — not an app business model dependent on monetizing your health data. You pay for access, the tools store your data in your account, and what you log stays in your account.
Trackers built for irregular and complex cycles
The menstrual cycle tracker captures cycle length, flow intensity, symptoms, mood, and notes — and shows you a longitudinal view. The PCOS symptom tracker is built specifically for the symptom constellation that PCOS creates: irregular cycles, androgen symptoms, insulin resistance markers, and hormone pattern tracking. It’s not trying to predict your ovulation based on a 28-day average.
Fertility-focused, not just cycle-focused
If you’re trying to conceive, DDH includes trackers that log BBT, LH test results, cervical mucus, and timing data — the full fertility awareness method data set. If you’re trying to understand whether you’re in perimenopause, the hormone dashboard tracks the symptom changes and cycle irregularities that characterize that transition without pathologizing it.
Physical health integrated
The prenatal fitness tracker and heart health tracker sit alongside the cycle tools because these systems are connected. Cardiovascular patterns change across the cycle. Fitness affects fertility. Having your wellness data in one place — rather than five separate apps — lets you see those connections.
The trackers built for you
Menstrual Cycle Tracker
Log cycle length, flow, symptoms, and mood over time — with pattern visualization that actually shows you what’s happening across months.
PCOS Symptom & Hormone Dashboard
Track the specific symptom complex PCOS creates — cycle irregularities, androgen symptoms, insulin markers — in one longitudinal view.
Prenatal Fitness Tracker
Track activity, energy levels, and physical changes across pregnancy with trimester-appropriate guidance and a health provider-shareable log.
Heart Health Tracker
Monitor cardiovascular markers across your cycle — heart rate variability, resting HR, and blood pressure patterns that shift with hormones.
Perimenopause Symptom Tracker
Track the cycle changes, hot flashes, sleep disruption, and mood shifts that mark perimenopause — with data you can share with your OB-GYN.
Fertility Awareness / BBT Tracker
Log basal body temperature, LH test results, and cervical fluid for fertility awareness method tracking — the full data set, in one place.
How people actually use the cycle trackers
Every morning, 60 seconds: You take your BBT before getting up, log it in the fertility awareness tracker along with yesterday’s LH test result and any cervical fluid observations. The tracker timestamps it and adds it to your chart. This takes less than a minute and builds the longitudinal data set that makes pattern recognition possible.
After symptoms that feel PCOS-related: You open the PCOS dashboard and log the specific symptoms you noticed — the acne flare, the energy crash, the irregular spotting. Over 3-4 cycles, the dashboard shows you whether these are clustered at particular cycle phases or happening randomly. That’s the difference between “I have symptoms” and “I have a pattern I can bring to my doctor.”
When your cycle is late: You’ve been logging for 6 months. You can pull up your cycle history and see that you’ve had two other late cycles — both during high-stress months. That context doesn’t replace a pregnancy test, but it does give you something beyond just “I’m worried.” You have data. You have history. That’s different.
When you see your OB-GYN: You export your last 12 months of cycle data from the DDH dashboard — cycle lengths, symptoms, spotting notes, BBT charts. You walk in with actual data instead of “I think my cycles have been getting shorter?” That changes the quality of the appointment.
On privacy: what we do and don’t do with your health data
We’re not in the data monetization business. DDH is a subscription tool — you pay for access, and the revenue model doesn’t depend on selling or sharing your health information.
What we do: Your data is stored in your account, encrypted at rest, and never sold to third parties or advertising networks. You can export your data at any time in standard formats. We have a clear data-deletion policy: you can delete your account and all associated data, and we honor those requests.
What we don’t claim: No tool can guarantee absolute security. DDH is a small SaaS product, not a specialized medical data vault. If your threat model is very high — if you live in a state where reproductive privacy is a significant legal concern — we’d recommend researching your options carefully, including offline tracking methods. We can tell you what we do. We can’t tell you what won’t happen in legal contexts we can’t anticipate.
What we can say: your data is in your account, not in an ad-tech pipeline. That’s a meaningful difference from the free cycle apps whose business model requires monetizing your health data.
Questions about cycle and fertility tracking with DDH
Is this better than Clue or Flo for irregular cycles?
For irregular cycles — PCOS, perimenopause, post-birth control resetting — yes, typically. Clue and Flo are optimized for predicting ovulation in regular cycles. DDH’s trackers don’t try to predict; they record and visualize what you log. If your cycle is irregular, having an accurate log of what actually happened is more useful than an algorithm guessing based on averages that don’t apply to you.
How private is my data, really?
Your data is stored in your account on Supabase (encrypted at rest), never sold to advertisers or third-party data brokers, and deletable on request. DDH’s revenue comes from subscriptions, not data monetization. We can’t guarantee legal protection in all jurisdictions — no service can — but we’re not in the business of sharing your health data with anyone.
Can my doctor see my tracking data?
You can export your data from DDH and share it with whoever you choose. There’s no automatic provider sharing — your data doesn’t go anywhere unless you export and send it yourself. For OB-GYN appointments, a 6-12 month export of your cycle log is genuinely useful context for your provider.
Is this useful if I’m trying to conceive?
Yes, specifically. The fertility awareness / BBT tracker is built for TTC users who want to log the full data set: basal body temperature, LH test results, cervical fluid observations, and cycle timing. If you’re also working with a fertility clinic, having this log is useful context for your treatment team.
What about perimenopause tracking?
The perimenopause tracker is built for the specific symptom profile of perimenopause: cycle irregularity, hot flashes, sleep disruption, mood changes, and the shift in cycle patterns. It’s longitudinal — you log over months and the chart shows your trajectory, not just point-in-time snapshots. That time-series view is what makes it useful for distinguishing normal perimenopause variation from something worth flagging with your doctor.
Your cycle data, in your hands
54 wellness trackers. 14-day free trial. Data that’s yours — exportable, deletable, never sold.
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