Simple Cycle vs PrivateCycle

Your cycle. Your business. Simple Cycle is a private period tracker for keeping useful records without accounts, ads, tracking, or subscriptions. Period dates, symptoms, and notes are stored locally on your iPhone. We don't collect your cycle or symptom data. There is no cloud sync, Apple Health connection, or automatic sharing. Export a copy only when you choose. START WITH WHAT YOU KNOW Add a period with start and end dates, record an ongoing period, or come back to earlier dates. Edit a whole period without losing its symptoms or notes. Setup is optional: you don't need to rebuild years of history to begin. LOG YOUR WAY Record flow, cramps, mood, and notes on any day. Add custom symptoms, put favorites first, and leave anything blank. An unanswered field stays unanswered. SEE YOUR HISTORY CLEARLY Compare completed cycle lengths and period lengths, with the number of records behind each summary. Browse a dated timeline of symptoms and notes, filter entries, and return to a day to make a correction. YOUR RECORDS. YOUR CALL. Create a readable PDF report or CSV file right on your iPhone. Choose the dates, symptoms, and notes to include, preview the result, then decide whether to share. Export and deletion remain available after your trial ends. Add an optional app lock using Face ID, Touch ID, or your iPhone passcode. ESTIMATES ARE OPTIONAL Show or hide period estimates and choose whether to receive a period reminder. An estimated fertile window is available only if you turn it on. It does not confirm ovulation. Estimated fertile window based on cycle averages. Not a contraceptive. Not for family planning. ONE PURCHASE. NO SUBSCRIPTION. Try everything free for seven days, then keep tracking with one lifetime purchase. No recurring payments. No ads. No tracking. Ever. Built by Under5.

PrivateCycle is a privacy-first period, cycle, and ovulation tracker that keeps 100% of your health data on your device. No account. No sign-up. No ads. No telemetry. No third-party data sharing — ever. Your body is your business. Log your period, symptoms, mood, and fertility signals in seconds, and get clear, honest predictions for your next period, fertile window, and ovulation — all computed locally on your iPhone. WHY PRIVATECYCLE • Local-first: core tracking, predictions, and insights work with no internet and no account. • Your entries are stored in an encrypted database on your device (AES-256). • No ads. No data sale. No hidden trackers or third-party SDKs. • Transparent predictions that are honest about uncertainty instead of faking precision. • Core tracking is free, forever. TRACK WHAT MATTERS • Period flow — light, medium, heavy, clots — with start and end logging. • Symptoms: cramps, headache, tender breasts, bloating, fatigue, acne, backache, nausea, hot flashes and more. • Mood and feelings, energy, sleep, cravings, digestion. • Discharge, sexual activity and drive. • Measurements: basal body temperature, weight, water, sleep hours, LH and pregnancy tests. HONEST PREDICTIONS • Next period date with a prediction window, not a false exact day. • Fertile window and estimated ovulation day. • Current cycle phase and a plain-language confidence level. • Irregular cycles and late periods are explained, never silently guessed away. SEE YOUR PATTERNS • A full cycle calendar with an at-a-glance legend. • Cycle history and averages. • Insights into how your symptoms move with your cycle. MODES FOR EVERY LIFE STAGE • Cycle tracking. • Trying to conceive. • Pregnancy — gestational age, due-date countdown, weekly summary. • Perimenopause — symptom logging and an irregularity view. PRIVACY BUILT IN, NOT BOLTED ON • Your data never leaves your device by default. • App Lock with Face ID or Touch ID keeps your entries yours. • Full data ownership: export to JSON, CSV or plain text, passphrase-protected local backup and restore, and one-tap delete-everything. • Reminders are scheduled locally on your device. PLUS — ONE-TIME UNLOCK, NO SUBSCRIPTION Upgrade once inside the app to unlock: • An on-device AI health assistant — private answers, with nothing leaving your phone. • Advanced insights: your body's patterns, symptom forecasting, and lifestyle-to-symptom correlations. • A clinician report — a formatted, date-range summary to bring to your doctor. • The full pregnancy experience: week-by-week development, body changes, daily tips, kick counter, contraction timer, appointments and checklist. • Full perimenopause: symptom-burden view, timeline and milestones. • Advanced reminders. No ads, no subscription, and the same privacy guarantees. Buy once, keep it. PrivateCycle provides general educational information about menstrual and reproductive health. It is not a medical device and does not provide medical advice, diagnosis, or treatment. It is not a contraceptive and should not be relied on to prevent pregnancy. Always consult a qualified clinician about your health. Download PrivateCycle and take control of your cycle, privately.