Cycle Sync Running Coach vs Rhythmus

Some weeks you feel unstoppable. Others, a 5k feels like a marathon. That's not a lack of discipline — it's your cycle, and most training plans ignore it completely. Cycle Sync builds your running week around where you actually are this month. CYCLE-AWARE TRAINING With Premium, your plan shifts with your phase. Quality sessions stay as written in the follicular and ovulatory phases. Volume over intensity through the luteal phase. Gentle, honest days when you're bleeding — never a hard session prescribed on a day your body is doing something else. Training for a 5k, 10k, half or marathon? Your week periodizes toward race day — base, build, peak, taper — and race day itself never moves. ADAPTS WHEN YOU DO Log how you feel in seconds — energy, cramps, sleep, flow. With Premium, your week adjusts around it. Missing a run or easing off isn't failure and Cycle Sync never treats it that way. No streaks to break, no guilt, no red rings shaming you. AN AI COACH THAT KNOWS YOUR WEEK Ask anything. "I have terrible cramps today." "Why is today easy?" "Can I move my long run to Sunday?" Your coach knows your phase and your plan, explains every change in one plain sentence, and can reshuffle your week on request. It tells you the real reason a day looks the way it does — not a generic tip. RUN TRACKING BUILT IN GPS route, distance, pace and cadence. Finished runs save to Apple Health alongside everything else. SAFETY THAT'S HONEST Let a trusted contact know when you head out, with a message you send yourself. A daylight cue when you're heading into dusk. No fake live-tracking promises. Free, always. SEE YOUR PATTERNS Every run is tagged with the cycle phase you were in. Once you've logged a couple of full cycles, Cycle Sync reads your own record back to you: which phases you run strongest in, how your energy and symptoms move through the month, and how many of your cycles each finding rests on. Never a study's average — your numbers. When a finding lands on a week that has a hard session in an unhelpful window, Cycle Sync offers to move it. One tap, free for everyone, and you can put it back. Monthly distance, pace and run trends. PRIVACY BY DESIGN Your cycle dates, symptom logs, routes and runs live on your iPhone and in Apple Health. There's no account — no email, no password, no profile on a server. We don't sell your data, don't run ads, and don't track you. To build your week and to answer you, Cycle Sync sends a short, anonymised summary — your phase, your plan, and how the last few weeks have trended — to an AI service. Never your name, your dates, your raw logs, or where you run. Setup shows you that summary and asks before any of it is sent; say no and your plan is built entirely on your iPhone. The privacy policy spells the rest out in full. FREE FOREVER Run tracking, period logging and safety sharing are free and always will be. CYCLE SYNC PREMIUM Unlocks the cycle-adaptive layer — every workout retuned to your phase and your logged symptoms — plus the conversational AI coach. Monthly or annual. SUBSCRIPTION DETAILS Cycle Sync Premium is an auto-renewable subscription, offered as Premium Monthly (one month) or Premium Annual (one year). The price for your region is shown in your local currency on the subscription screen before you confirm. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically for the same period unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the period ends. Manage your subscription or turn off auto-renew in your Apple Account settings after purchase. Cycle Sync is a training app, not a medical device, and doesn't give medical advice. If something feels wrong, talk to a clinician. Privacy Policy: https://bloomcyclefitapp.github.io/bloom-privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Rhythmus is a period tracker with a cycle calendar — plus a nutrition and training plan that changes with your cycle. WHAT RHYTHMUS DOES • Cycle and period calendar: log your period, see your cycle day and phase at a glance, with estimated ovulation and fertile window • Nutrition plan: meals and nutrients matched to your current phase – omnivore, vegetarian, vegan – with a shopping list • Training plan: workouts scaled to your intensity and training days, logged set by set • Supplements: which nutrients matter in which phase • Daily energy check-in: feeling low, and the app suggests a gentler session • Weekly overview, symptom diary, cycle statistics from your own history WHO IT IS FOR For women who train and notice that the same session feels easy one week and impossible the next. Menstruation, follicular phase, ovulation and the luteal phase each ask for something different — Rhythmus takes that into account. NO ACCOUNT, NO TRACKING No sign-up, no registration, no ads, no subscriptions, no in-app purchases. Everything you enter stays on your device and is sent nowhere. The app works fully offline. From Settings you can export a backup at any time and restore it on another device. WITH SOURCES Every health statement in the app comes with a citation you can tap — straight to the study or fact sheet. Among others from the Journal of the International Society of Sports Nutrition, the Journal of Medical Internet Research and the National Institutes of Health. Available in German, English and Spanish. Rhythmus is a free passion project. Note: Rhythmus is not a medical device, not a contraception method, and does not replace medical advice.