CycleSync

Synchronize your life with your menstrual cycle

Introduction CycleSync is a privacy-focused menstrual tracking extension that helps you understand and work with your natural cycle. Log symptoms, track patterns, and receive personalized recommendations to optimize your wellbeing throughout each phase of your cycle. Unlike cloud-based period trackers, CycleSync stores all your sensitive data locally in your browser, giving you complete control and privacy over your personal health information. Key Features 🔒 Privacy-First Approach All your cycle data stays on your device No accounts or sign-ups required No data sharing with third parties 📊 Comprehensive Cycle Tracking Monitor period dates, flow intensity, and cycle length Track physical and emotional symptoms Log energy levels, sleep quality, and more 📅 Smart Calendar Visual cycle calendar with period, fertile window, and ovulation predictions Automatic updates based on your unique patterns Color-coded phases for easy reference 🔍 Personalized Insights Learn how your cycle affects mood, energy, and productivity Discover your most common symptoms by cycle phase Track changes and patterns over time 💡 Phase-Based Recommendations Receive tailored tips for each phase of your cycle Optimize your activities based on your natural energy levels Plan ahead with accurate predictions ⏰ Helpful Reminders Optional notifications for upcoming periods and ovulation Daily symptom logging reminders Customizable notification settings 🎨 Customization Options Multiple theme choices to personalize your experience Adjust cycle length and tracking preferences Import and export your data anytime Why Use CycleSync? Understanding your menstrual cycle gives you powerful insights into your body's natural patterns. CycleSync helps you harness this knowledge to: Plan important events around your cycle Reduce the impact of PMS and cycle-related symptoms Optimize your productivity and exercise routines Make informed decisions about your health and wellbeing Take control of your reproductive health Who Is CycleSync For? CycleSync is designed for anyone who menstruates and wants to: Track their cycle with complete privacy Understand the connection between their cycle and overall wellbeing Use cycle awareness as a tool for better health management Have easy access to their cycle data directly in their browser Privacy Commitment Your health data is personal. That's why CycleSync: Stores all data locally on your device Never sends sensitive information to external servers Gives you complete control to export or delete your data at any time Has no user accounts or login information to secure Start synchronising your life with your natural cycle today with CycleSync! --- Version 1.0.1 This update focuses on stability and cross-platform compatibility improvements to ensure a consistent experience for all users. Resolved layout issues affecting Windows users Improved font rendering and text display across all operating systems Enhanced popup sizing to prevent content from being clipped Optimised scrollbar behaviour for a cleaner interface Minor visual refinements across the calendar, dashboard, and settings views We appreciate your support and feedback as we continue to improve CycleSync. --- Version 1.0.2 This update introduces a first-time setup experience to help new users get personalised cycle tracking right away. Added onboarding flow for new installs — enter your last period date and cycle length to see accurate phase and prediction data from the start Fixed an issue where the dashboard showed placeholder data instead of your actual cycle information Improved first-run experience across all supported platforms We are listening to our users ☺️🙏🏿 --- Version 1.0.3 Further layout and rendering improvements for Windows users. We are listening to our users ☺️🙏🏿 ---- Version 1.0.4 ✅ Onboarding flow (with cycle length + period length steps) ✅ Period countdown bar ✅ Period started button ✅ Symptom date defaults to today ✅ Uninstall feedback form (moved to background.js) ✅ manifest.json warning fixed We are listening to our users ☺️🙏🏿 ---- What's New in v1.0.5 We've been listening! This update focuses on making CycleSync even better based on early user feedback. ✨ Review Prompt : After using CycleSync for a few days, you'll see a gentle nudge to leave a review. Your feedback helps us improve and helps other women discover the extension. 🐛 Bug Fixes & Stability : General improvements to make the experience smoother across all devices and operating systems. ---- What's New in v1.0.6 ☕ Support CycleSync — CycleSync is free and always will be. If it's been helpful to you, you can now support the project with a small coffee via Ko-fi. You'll find the support button in the Settings tab, and after a week of tracking we'll give you a gentle nudge too. No pressure — every coffee genuinely helps keep development going. 🐛 Bug Fixes & Stability — Further improvements to make the experience smoother across all devices. --- What's New in v1.0.7 🔄 Cross-Device Sync — Your cycle data now follows you everywhere. Install CycleSync on any device where you use Chrome and your data syncs automatically. No account needed — existing users are migrated automatically with no data loss. 📐 Customisable Popup Size — You asked, we listened! You can now choose Small, Medium or Large popup size from the Settings tab to suit your screen and preference. 🗓️ Google Calendar & Trello — These integrations are coming in a future update. We've updated the Settings tab to make this clearer so there's no confusion. 🐛 Bug fixes and stability improvements --- What's New in v1.0.8 🌍 Russian Language Support — CycleSync now supports English and Russian. Switch languages instantly from the Settings tab. All phases, symptoms, tips and onboarding are fully translated. Большое спасибо Стасу за вдохновение! (Thank you to Stas for the inspiration!) 🇷🇺 Language Switcher — Find the new Language section at the top of Settings. Switch between 🇬🇧 English and 🇷🇺 Русский with one tap. Your preference is saved automatically. 🐛 Bug fixes and stability improvements ---- What's New in v1.0.9 🇪🇸 Spanish Language Support — CycleSync now speaks Spanish! Full UI translation including all phases, symptoms, tips and onboarding. Perfect for our growing community in Spain and Latin America. 🇧🇷 Portuguese Language Support — Full Brazilian Portuguese translation now available. Bem-vinda! For our users in Brazil and Portugal. 📅 Export to Calendar — You can now export your predicted period dates, fertile window and ovulation to any calendar app. Go to Settings → Data Management → Export to Calendar (.ics) and import into Google Calendar, Apple Calendar or Outlook. 6 months of predictions generated automatically. 🐛 Theme Fix — Fixed an issue where the selected theme wasn't being saved between sessions. Your chosen theme now persists every time you open CycleSync. CycleSync now supports 4 languages: 🇬🇧 English · 🇷🇺 Russian · 🇪🇸 Spanish · 🇧🇷 Portuguese Switch languages anytime from the Settings tab. --- What's New in v1.1.0 🌍 13 Languages — Now Truly Global CycleSync now speaks 13 languages: 🇬🇧 English · 🇷🇺 Russian · 🇪🇸 Spanish · 🇧🇷 Portuguese · 🇫🇷 French · 🇩🇪 German · 🇮🇳 Hindi · 🇮🇩 Indonesian · 🇧🇩 Bengali · 🇯🇵 Japanese · 🇰🇷 Korean · 🇮🇹 Italian · 中文 Simplified Chinese Switch languages instantly from the Settings tab. CycleSync remembers your choice. 📱 Mobile PWA Now Live CycleSync is now available as a mobile web app for iPhone and Android. No App Store needed. Visit wushu75.github.io/CycleSync/app/ in your mobile browser and add it to your home screen. Works offline once installed. 🔄 Cross-Device Sync Improved Your cycle data now syncs more reliably across all your Chrome and Edge devices with no account required.