The best cycle syncing apps in 2026

Key takeaways

• Only some apps plan food and workouts by phase. Most of the apps here focus on tracking and predictions.
• Natural Cycles is the only app here that is FDA-cleared as birth control. Regime Longevity is not contraception.
• Oura's cycle features need an Oura Ring and a membership.
• Regime Longevity is on iPhone only. The other apps in this guide are on iPhone and Android.

The apps at a glance

"Not described" means we did not find it on the app's own website or App Store page in October 2026. Prices are US App Store or official US prices checked in October 2026 and can change.

Regime Longevity (our app)

Best for: women who want each day planned around their cycle, not just a calendar of it.

Regime gives you a daily plan for food, training, sleep and work by cycle phase. Period and phase predictions learn your own rhythm, so it works with irregular cycles. If you have no periods, it plans around your goals instead. Snap a meal for calories, nutrients and an inflammation score based on the Dietary Inflammatory Index. Workouts are built from your goals, history and phase. An AI concierge can change your plan when you say OK, and it reads blood test photos and PDFs. You also get a supplement tracker, water, fasting, sleep, meditations, recipes and a grocery list. There are no ads, your data is never sold, and progress photos stay on your phone. It comes in English, Spanish, French, Portuguese and Russian. The honest limit: it is iPhone only.

28

Best for: women who want guided workout videos and food tips that change with each phase.

28, from 28 Wellness, offers daily exercise videos, nutrition tips and emotional insights based on your cycle. It names the phases Restore, Awaken, Perform and Balance. Its App Store page says workouts need no equipment and promises no calorie counting. You can download it for free, and there is a Premium subscription. It is on iPhone and Android.

Wild.AI

Best for: women who train often and want training and fuelling advice that follows their hormones.

Wild.AI syncs training to your hormonal phases, whether you menstruate, use birth control, or are in perimenopause or menopause. A daily check-in gives you a readiness score and training advice. It suggests macro adjustments for before, during and after training. It connects with Apple Health, Garmin, Oura, Strava, Fitbit and TrainingPeaks. In September 2025, Zepp Health said it had acquired Wild.AI's core assets and would keep supporting the existing app on iOS and Android.

FitrWoman

Best for: athletes, and coaches who plan training around an athlete's cycle.

FitrWoman, from Orreco, helps you train, compete and recover in sync with your cycle. You track periods and symptoms, and it suggests foods that may ease cycle symptoms. You can save recipes for each phase. A separate coach platform connects coaches with their athletes. The App Store lists it as free, on iPhone, iPad and Android.

Flo

Best for: women who want a widely used tracker for periods, ovulation, pregnancy and perimenopause.

Flo tracks regular or irregular periods, predicts ovulation and has a pregnancy mode and perimenopause tools. You can log more than 70 symptoms and moods, share with a partner, and use an Anonymous Mode. Core tracking is free. Premium adds tailored insights, expert videos and a health assistant. We did not find phase-based meal or workout plans on its pages. It works on iPhone, Apple Watch and Android.

Clue

Best for: women who want detailed, science-based tracking of their cycle and symptoms.

Clue lets you track more than 200 symptoms and experiences, and gives period, ovulation and fertile window predictions. It has over 400 articles and connects with wearables such as Apple Watch, Oura and Fitbit. Clue Plus adds deeper analysis and advanced predictions. The US App Store lists it at $9.99 a month or $39.99 a year. Clue focuses on tracking, not meal or workout plans. It is on iPhone and Android.

Stardust

Best for: women who enjoy a playful tracker with moon and astrology features.

Stardust is a free period, ovulation and pregnancy tracker. It adds a moon calendar, zodiac insights, daily cards and tools to align your cycle with lunar phases. You can share your cycle with a partner or friends, and it has pregnancy and postpartum modes. Paid plans are listed on the App Store. It is on iPhone and Android.

Natural Cycles

Best for: women who want hormone-free birth control or help planning a pregnancy.

Natural Cycles is FDA-cleared as a birth control app. It says it is 98% effective when used as intended and 93% with typical use, and it does not protect against STIs. It reads your temperature from a thermometer, its NC° Band, or a supported wearable such as Oura Ring or Apple Watch Series 8 or newer. Modes cover birth control, planning and following a pregnancy, postpartum and perimenopause. It needs a subscription. It is not a meal or workout planner.

Oura

Best for: women who already wear an Oura Ring and want cycle insights from their body temperature.

Oura's Cycle Insights shows your follicular and luteal phases and period predictions for the next 12 months, and it has a Fertile Window view. Oura says these insights should not be used as birth control. It needs a Gen3 or later ring and an active membership, which costs $5.99 a month or $69.99 a year in the US before tax. It works on iPhone and Android.

How to choose a cycle syncing app

• You want a plan, not only a calendar. Pick an app with phase-based food and workouts: Regime Longevity, 28, Wild.AI or FitrWoman.
• You train hard or compete. Wild.AI and FitrWoman are built around sport.
• You want to avoid pregnancy. Use a method cleared for it, such as Natural Cycles, and talk to your doctor. Regime Longevity is not contraception.
• You wear an Oura Ring. Cycle Insights is already in your app with a membership.
• Your cycle is irregular, or you have no periods. Check that the app says it supports this before you pay.
• Privacy matters to you. Read the privacy policy. Look for no ads and no data selling.

Questions

What is the best cycle syncing app?

It depends on what you want from it. For a full daily plan of food, training, sleep and work by phase, we built Regime Longevity. 28 focuses on workout videos and nutrition by phase. Wild.AI and FitrWoman are built around sport. Flo and Clue focus on tracking.

Is there a free cycle syncing app?

FitrWoman is listed as free on the App Store and gives food and training guidance around your cycle. Flo, Clue, Stardust and 28 have free versions with paid plans for more. Regime Longevity has 3 days free, then a subscription.

Can a cycle syncing app be used as birth control?

Only an app cleared for that use. Natural Cycles is FDA-cleared as birth control. Regime Longevity is not contraception and must not be used to prevent pregnancy. Oura says its fertility insights should not be used as birth control.

Do these apps work with irregular cycles or no periods?

Flo says it tracks regular or irregular periods, and Clue lets you track symptoms even without regular bleeding. Regime Longevity learns your own rhythm, works with irregular cycles, and plans around your goals when you have no periods.

Does science support cycle syncing?

The research is still young. A 2020 meta-analysis found that differences in exercise performance across the cycle were small and varied between women.¹⁶ A good app should adapt to how you feel, not only to the calendar.

Keep reading