Comparison

Cycles vs Fasted Harmony

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Cycles

Track your menstrual cycle, fertility, and ovulation with ease. Log observations, predict fertile days, and manage irregular periods. Offers partner connection and detailed insights for better reproductive health management.

Highlights
  • Cycle tracking at a glance
  • Log body and mood observations
  • Fertile day predictions
  • Irregular/missed period support
  • Partner connect feature
  • Customized reminders
  • Detailed observation descriptions
Features
Read full description

No more surprises, worrying or feeling in the dark about your own reproductive health. As the first app to introduce partner connect, Cycles knows how to make the most out of period tracking. With a clean and simple interface you can keep track of your cycle effortlessly. WHY CYCLES? • Track your cycle in one glance with Cycle view. • Easily log observations on your body and mood. • Take the guesswork out of predicting your most fertile days. • Irregular or missed period? A single tap and Cycles has got your back. • With you wherever you go: for iPhone, iPad, and Apple Watch. TOTAL PRIVACY • Optional passcode or FaceID to protect your privacy. • Share your cycle info privately with your partner. • Your reminders and notes are always kept private, even from your partner. UPGRADE TO CYCLES PREMIUM • Get tailored predictions on upcoming changes to your body. • Connect with your partner to plan intimate moments, vacations and more around your cycle. • Set-up customized reminders for birth control, fertile days or periods. • Become a menstrual cycle expert with detailed descriptions for all observations. • Make Cycles your reliable health care partner with Insights Overview. Perfect for any doctors visit! When calculating fertility for pregnancy with natural family planning, Cycles takes advantage of scientific research that’s more accurate than the 'rhythm method' of yesteryear and has a real-world failure rate comparable to that of condoms. Even so, this app is designed for informational purposes only and should not be used to prevent pregnancy. If you choose to unlock Cycles Premium, your purchase will be charged to your iTunes account. Active subscriptions will be auto-renewed 24 hours before the expiry date. You can manage subscriptions from Account in iTunes after subscribing, you’ll also be able to cancel the auto-renewing subscription from there at any time. Any unused portion of the free trial period will be forfeited if you purchase a subscription to Cycles Premium before your trial expires. Optional permission requests: • Health app, to record your cycles and reproductive health data • Notifications, to remind you of the phases of your cycle Terms: https://cycles.app/terms-of-service

About

Fasted Harmony

This app syncs intermittent fasting windows with your menstrual cycle, optimizing fasting times based on hormonal phases. It offers cycle tracking, symptom logging, and AI-powered guidance to help you fast smarter and achieve better results.

Highlights
  • Phase-specific fasting windows (12-18 hrs)
  • Smart cycle tracking with predictions
  • AI Hormone Coach for personalized guidance
  • Symptom, mood, and energy logging
  • Weight trends overlaid on cycle phases
  • CSV data export
Features
Read full description

Your hormones are not on a 24-hour clock — so why is your fasting routine? Most fasting apps treat every single day the same. Your cycle is personal, and your energy, appetite, and wellbeing can feel different throughout the month. Fasted Harmony brings cycle tracking, fasting, nourishment, and movement together in one supportive plan. YOUR DAY, SYNCED Open Fasted Harmony each morning to "Your Day, Synced" — your personalized daily roadmap that unites your cycle phase, fasting targets, meals, and movement into one effortless view. See your current cycle context, a suggested fasting range, meals, and movement together. Predictions recalculate from your recent completed logs and show a likely range when timing varies. WHY WOMEN LOVE FASTED HARMONY: CYCLE-AWARE FASTING WINDOWS Say goodbye to rigid 16:8 schedules that leave you exhausted during your luteal phase. Fasted Harmony offers phase-aware fasting ranges and encourages you to shorten or skip a fast when hunger, symptoms, sleep, or recovery call for nourishment. HOME & LOCK SCREEN WIDGETS Glance at your current cycle day, phase, and fasting countdown right from your Home Screen or Lock Screen. Choose from gorgeous aesthetic themes like Soft Blush and Starry Night. LIVE ACTIVITIES & DYNAMIC ISLAND Keep tabs on your active fast in real time. Dynamic Island and Lock Screen tracking let you check your remaining fast time at a single glance without unlocking your phone. CYCLE-SYNCED WORKOUTS WITH INSTRUCTIONS Stop guessing how hard to push. Access tailored daily workouts matched to your energy — from energizing strength training during your follicular surge to restorative yoga and mobility when your body needs recovery. Every exercise includes step-by-step instructions and form cues. HORMONE-SUPPORTIVE RECIPES Explore wholesome recipes organized by cycle phase and filtered against your saved food preferences, dislikes, and allergens. GLP-1 & PEPTIDE SUPPORT Optional GLP-1 and peptide tools focus on nourishment, protein, hydration, and private logging without medication or dosing advice. Secure exports: Complete Data Archive (JSON) and Clinician Health Summary (PDF). Private multi-cycle symptom patterns in recaps. Cross-device fast sync keeps your active fast and goal aligned on signed-in devices. Premium weekly meal planner with compatible recipe filtering, one shopping list, optional AI creation, and PDF export. PRIVATE BY DESIGN Your health data is encrypted and never sold. Ever. Download Fasted Harmony and start fasting in flow with your body — not against it. SUBSCRIPTION INFO: • Premium Monthly: $4.99/month • Premium Yearly: $45.99/year (save 23%) • Payment is charged to your Apple ID at confirmation of purchase • Subscription auto-renews unless canceled at least 24 hours before the end of the current period • Your account is charged for renewal within 24 hours prior to the end of the current period • Manage or cancel in your App Store account settings • Any unused portion of a free trial is forfeited upon purchase of a subscription Privacy Policy: https://fastedharmony.larvottoventures.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Custom Terms: https://fastedharmony.larvottoventures.com/terms DISCLAIMER: Fasted Harmony provides cycle and fasting guidance for wellness and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before changing your fasting routine — especially if you are pregnant, breastfeeding, under 18, have a history of disordered eating, or have a medical condition. AI-generated guidance may not always be accurate.

Screenshots

Cycles4 screens
Fasted Harmony4 screens

Verdict

The call

The clearest difference is ratings volume: Cycles at 27K against Fasted Harmony's 1. Cycles also leads on update cadence (every 6 days vs every 2 weeks). Fasted Harmony's advantage is rating (5.0 vs 4.7). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Cycles sells 15 in-app purchases, starting at $4.99 per month and Fasted Harmony sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Fasted Harmony holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Cycles has 27K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Cycles ships an update every 6 days, Fasted Harmony every 2 weeks. The most recent releases landed on October 22, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Cycles versus Fasted Harmony: the parameters behind the verdict, then further details
ParameterCyclesFasted Harmony
PriceFreeFree
Rating4.7 (27K ratings)5.0 (1 ratings) — better
Positive reviews87.7% of reviews—
Number of ratings27K — better1
Update frequencyEvery 6 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.016.6 — better
Further details — not scored
Size97 MB134 MB
Age rating9+12+
DeveloperPerigeeLarvotto Ventures LLC

Customer experience

Cycles

All ratings27,224 ratings
Positive93.0%
Neutral4.1%
Negative2.9%
Written reviews1,126 reviews
Positive87.7%
Neutral5.2%
Negative7.2%

Fasted Harmony

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Cycles

Reported bugs

3 issues
  • Cycle data disappearing or resetting unexpectedly
  • Syncing issues between devices and accounts
  • Inaccurate cycle predictions and date adjustments

Requested features

5 requests
  • Add more symptom and mood options
  • Improve cycle editing and data management
  • Integrate with health apps for comprehensive tracking
  • Provide more insights and predictions based on cycle data
  • Allow customization of app appearance and notifications

Fasted Harmony

Not enough reviews yet to summarise bugs or requests.

In-app purchases

15 purchases

Cycles

Subscriptions14
  • Cycles Premium7 Days trial$4.991 Month
  • Period Calendar & Ovulation3 Months trial$6.991 Month
  • Cycle Tracker Premium - Cycles7 Days trial$6.991 Month
Show 11 more
  • Cycles: Period Calendar$6.991 Month
  • Cycles: Period Calendar7 Days trial$6.991 Month
  • Cycles Premium7 Days trial2 variants$9.991 Month
  • Cycles: Period Calendar$9.991 Month
  • Cycles Premium1 Month trial$29.991 Year
  • Menstrual Cycle Tracker7 Days trial$29.991 Year
  • Cycles Premium7 Days trial2 variants$39.991 Year
  • Cycle Tracker & Calendar$39.991 Year
  • Cycles: Period Tracker1 Year trial$39.991 Year
  • Cycles Premium7 Days trial$59.991 Year
  • Cycles: Cycle Tracker & Period$59.991 Year
One-time1
  • Cycles Pro$2.99
2 purchases

Fasted Harmony

Subscriptions2
  • Premium Monthly$4.991 Month
  • Premium Yearly7 Days trial$45.991 Year

Questions

Is Cycles free?
Cycles is free to download, with in-app purchases available.
Is Fasted Harmony free?
Fasted Harmony is free to download, with in-app purchases available.
Which has better reviews, Cycles or Fasted Harmony?
Fasted Harmony is rated higher. Cycles averages 4.7 out of 5 from 27K ratings, while Fasted Harmony averages 5.0 from 1 ratings.
Do Cycles or Fasted Harmony have ads?
Neither Cycles nor Fasted Harmony shows ads.
Which is updated more often, Cycles or Fasted Harmony?
Cycles ships an update every 6 days, and Fasted Harmony every 2 weeks. Most recently, Cycles was updated on October 22, 2026 and Fasted Harmony on October 14, 2026.

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