28X Private Period Tracker vs Private Cycle Journal

28X Private Period™ is a free-to-use period tracker, privacy safe, designed to create a beautiful space to understand your cycle, from first periods to perimenopause and menopause. Your data stays yours. Always. No selling data. A women's health app built entirely around privacy. Free for everyone, everywhere. Discreet, clinically informed and very private. The first period tracker to achieve a 93% ORCHA rating. Periods are better on 28X. WHY WE’RE DIFFERENT Most period trackers rely on subscriptions, ads, or sharing user data to make money. 28X is the new way to track periods. - No subscriptions. Free for everyone, everywhere. - You have the power over your own data. It stays with you on your device. - No data selling, no data sharing. No cloud servers. - No ads. No subscriptions. No tracking. No paywalls. No locked features. - Calm, simple period tracking designed around privacy. Understand your body without giving up your data. - We build 28X alongside our users, listening to real feedback to shape what people actually want and need from the app. To help keep 28X free for everyone, you can contribute to an optional pay-it-forward feature that supports development and women and girls in vulnerable communities worldwide. No obligation. WHAT’S INSIDE THE APP Simple period tracking tools to help you understand your body. - Track Your Cycle - Period and cycle tracking - Clear menstrual phase predictions - Mood, energy, PMS and symptom logging - Patterns you can actually understand LEARN WOMEN'S HEALTH Supportive, clinically informed content designed to be clear, accessible, and empowering. Learn about: - Hormones and cycle phases - PMS and monthly changes - Endometriosis and PCOS - Perimenopause and menopause - Skin, mood, and energy shifts - Nutrition, lifestyle, contraception, and fertility PRIVACY FIRST - Your data stays with you - All data is stored on your device - No cloud storage - No tracking or profiling - No ads - No selling your data Health tracking built around you, not your data. FOR EVERYONE, EVERYWHERE 28X is free, global, and inclusive, designed for all backgrounds and life stages. Whether you are tracking your first period or navigating menopause, 28X helps you understand your body without giving up your privacy. 28X Private Period™ is not a medical device and doesn’t diagnose, monitor, prevent, treat or predict any health condition. It’s also not designed to help you get pregnant or avoid pregnancy. Always speak to a healthcare professional for personal medical advice.

Cycle Tracker is a period and symptom tracker built around one rule: your data never leaves your phone. There are no accounts to create, no servers to sync with, and no analytics or ad SDKs watching what you log. Everything from period dates, symptoms, notes, and predictions are all encrypted on your device and stays there unless you personally choose to export a backup. WHAT YOU CAN TRACK • Period start/end dates • Flow intensity, mood, cramps, bloating, digestive symptoms, sleep, stress, and more • Your own custom symptoms • Free-text notes, searchable later so you can find "did I feel this way last month?" in seconds • A one-tap "log today, nothing notable" shortcut for days you don't want to fill out a full form ON-DEVICE PREDICTIONS • Cycle length and ovulation window estimates, calculated entirely on your phone • Seasonal adjustment once you have enough history • Symptom timing and co-occurrence insights ("you tend to get headaches 2 days before your period") • Predictions ranges, with a confidence indicator that improves as you log more • A plain-language screen explaining exactly how every prediction is calculated PRIVACY AND SECURITY, BY DEFAULT • Local database encrypted at rest (SQLCipher/AES-256) • Stack any combination of biometric unlock, PIN, password, and authenticator-app (TOTP) codes, and choose how many of them are required to unlock • Rate limiting with escalating delays on failed attempts • Optional auto-wipe after too many failed attempts • Optional decoy mode • Screenshot and screen-recording blocking • Jailbreak/root and app-tampering detection on launch • A neutral app name and icon by default YOUR DATA, YOUR CALL • Manual, encrypted export whenever you want a backup • Import to restore on a new device • Configurable reminders to back up periodically, since nothing is ever backed up automatically Built for anyone who wants real cycle and symptom insights without handing their health data to a company. No accounts. No cloud. No tracking beyond the tracking you're actually here for.