FertilityOS

FertilityOS is a private, offline tracker built for every stage of trying to conceive - natural cycles, IUI, IVF, recurrent pregnancy loss, and secondary infertility. The Cycle tab handles 21-45+ day cycles with adaptive predictions. BBT graph reads sustained shifts. OPK + tests log peak detection, progesterone, and beta hCG numbers across multiple draws. IUI / IVF tab walks through medication protocols (Clomid, Letrozole, Gonal-F, Menopur, trigger shot, Lupron, Crinone), egg retrieval, embryo transfer, and beta tracking with daily hCG progression chart. Meds + supps logs CoQ10, prenatal, vitamin D, NAC, baby aspirin, with timing. Partner tab includes sperm analysis history. Two-week wait gets a dedicated symptom-and-mood tracker that does not catastrophize every twinge. Journal is private, hopeful, honest. Loss support tab is gentle - acknowledge, name, memorialize, no pressure. Labs tab keeps AMH, FSH, LH, estradiol, TSH, vitamin D, prolactin history. Doctor prep generates clean printable summaries. Every input saves locally to your device. Nothing goes to a server. No account, no subscription, no app store, no health data sold to advertisers, no fertility ads chasing you for the next decade. Works on laptop in any browser, and adds to your iPhone or Android home screen as a standalone app for offline use.

WHAT'S INCLUDED

• Dashboard - cycle day, predictions, today snapshot, gentle reminders
• Cycle - adaptive 21-45+ day cycles, period predictions, history
• BBT - daily temp graph, sustained shift detection, ovulation guess
• OPK + tests - peak detection, progesterone, beta hCG progression chart
• IUI / IVF - protocols, ER + ET dates, beta tracking, day-by-day stim log
• Meds + supps - CoQ10, prenatal, vitamin D, NAC, prescribed meds
• Partner - sperm analysis history (count, motility, morphology)
• Lifestyle - sleep, stress, exercise, alcohol, caffeine impact
• 2WW - dedicated two-week wait symptom and mood tracker
• Journal - private daily entries, hopeful and honest
• Loss support - gentle acknowledgement, memorial, anniversaries
• Labs - AMH, FSH, LH, estradiol, TSH, vitamin D, prolactin history
• Doctor prep - printable summary for RE / OB-GYN visits
• 100% private - sensitive fertility data never leaves your device
• Single HTML file - laptop + iPhone + Android home screen, fully offline

100% PRIVATE AND OFFLINE

Your fertility journey is sacred and intensely personal - cycle data, BBT, OPK, IUI / IVF protocols, beta hCG numbers, journal entries, loss memorial. This app never sends a single byte to a server. No account, no cloud, no analytics, no tracking, no targeted ads pushing baby gear at you. Everything lives only on your device. Works completely offline. Your story stays yours.

WORKS ON ALL DEVICES

Open on laptop, add to home screen on iPhone (Safari) or Android (Chrome) as an app. One file, all devices. Use it at 5am for BBT, in the IVF clinic waiting room, or in bed during the two-week wait.

INSTANT DOWNLOAD

Download once, use forever. No subscription, no renewal, no expiry, no upgrade prompts when you are already exhausted.

PERFECT FOR

• Couples actively TTC who want one private place for everything
• Women in IUI cycles tracking trigger, IUI dates, beta progression
• Women in IVF cycles tracking stim meds, ER, ET, frozen transfers, betas
• Anyone navigating recurrent pregnancy loss who needs gentle tracking
• Women with secondary infertility who already feel unseen
• Anyone tracking BBT and OPK who hates cluttered cycle apps
• Women who refuse to put fertility data into a cloud app that targets baby ads

Questions? Message us on Etsy - we reply within 24 hours. We are honored to be part of your journey.

Disclaimer: This is a personal tracking and journaling tool. It is not medical advice and does not replace your reproductive endocrinologist, OB-GYN, or fertility clinic. Predictions about ovulation and period are estimates based on your cycle history. Always consult your medical team for treatment decisions.