Comparison

Period Tracker Period Calendar vs Flo Cycle & Period Tracker

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

Head to head
About

Period Tracker Period Calendar

This app helps women track their menstrual cycles, ovulation, and fertility. It offers personalized advice, pregnancy tracking, and reminders for birth control and medication. Your data is kept private and stored locally on your device.

Highlights
  • Period and ovulation prediction
  • Fertility tracking
  • Pregnancy mode with week-by-week growth
  • Birth control and pill reminders
  • Symptom tracking and predictions
  • Privacy-focused with local data storage
  • Partner mode for sharing
Features
Read full description

** Top Rating Period Tracker App, Trusted by 300+ Million Women ** Check out the most widely-used period, ovulation & pregnancy tracker, which has been helping improve the well-being of over 300,000,000 women in 45+ countries in the past decade. At every stage of life, Period Tracker safeguards your well-being. PRIVACY YOU CAN TRUST – NO ACCOUNT NEEDED Unlike many apps, you can use ours without registering. Your data stays 100% on your device, never uploaded or shared. Delete everything with a single tap – your privacy, fully protected. MY CALENDAR FOR PERIOD & CYCLE We'll remind you of the dates when your next period starts and ends on time. It's useful whether you have irregular or regular period. Period Tracker will provide tailored PMS advice and menstrual guidance on period pain relief. OVULATION & FERTILITY TRACKER We help calculate the most fertile days and analyze the fertility window based on your unique cycle. You can get pregnant naturally ASAP by learning your CHANCE OF CONCEPTION daily. PREGNANCY MODE: WEEK-BY-WEEK Follow your baby's weekly growth. Use our due date calculator to find out when your baby's BIG DAY will be and count down it. PARTNER MODE Share menstrual cycles with your partner for more support. No pop-up ads – Enjoy a shared experience in planning life and sex, and tracking pregnancy. BIRTH CONTROL REMINDER Quickly record and stay on track with your contraceptive methods like pills, rings, patches, injections, IUDs, or implants. You can customize the reminder message for individual services. PILL REMINDER Set start date, interval, durations, and dose quantity for any medication, drugs or supplements. So you won't forget to take pills when life gets busy. SYMPTOM PREDICTIONS & TIPS Record symptoms during any life stage. Get predictions and courses to learn how to deal with them. Take breast self-exam monthly to find abnormalities early. >>Key Features: - Accurate prediction & reminders of menstruation & the most fertile days - Track cycle lengths, flow intensity, when you are ovulating, birth control methods, etc. - Log 58 symptoms, 67 moods, and energy levels to know your menstrual pattern - Track daily chance of getting pregnant with BBT, cervical mucus, ovulation & pregnancy test records - Baby's due date countdown - Export a health report with charts for self-archive or doctors - Insights from fertility specialists - PIN code, Face ID, & Fingerprint lock to protect your private data - Daily health tracker: weight, hydration, sleep, mood, sex, steps, etc. - Breast self-exam guidance - Multiple accounts to track for different, for example, mother/daughter - Unlimited app themes & pets - Available in 39 languages - Sync data with Apple Health - Backup and restore data between devices Upgrade to Premium and Enjoy It All: - Monthly cycle trends analysis - Daily fertility insights - Symptom tracking & health insights - Exclusive self-care courses - Kegel exercises for women - Comprehensive pregnancy support About Subscription Details: After you choose the Premium plan that‘s right for you and confirm your purchase, the payment will be charged to your iTunes account. Your subscription will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. If you currently have a free trial, any unused time will be forfeited when you purchase a subscription. You can manage or change your subscription anytime in ‘Account Settings’ on your device. If you choose to continue, the renewal fee will be charged 24 hours before the current period ends at the same price as your initial subscription. Note: Period Calendar should not be used to replace any form of contraceptive method. For any questions, feel free to contact us via [Settings] -> [Bug Report&Feedback] in app or write to us at abishkking.apple@gmail. Privacy Policy: https://pc.abishkking.com/privacypolicy.html Terms of Use: https://pc.abishkking.com/terms.html

About

Flo Cycle & Period Tracker

This app helps women track their menstrual cycles, ovulation, and fertility. It offers personalized insights, pregnancy support, and tools for managing perimenopause symptoms, with a focus on data privacy and security.

Highlights
  • Period and ovulation tracking
  • Fertility and pregnancy support
  • Symptom and mood logging
  • Personalized cycle insights
  • Pregnancy week-by-week guidance
  • Perimenopause symptom tracking
  • Anonymous mode and data security
Features
Read full description

Flo is a science-backed period tracker, ovulation tracker, fertility, and pregnancy app used by over 500 million* women worldwide. Whether you’re tracking your period (regular or irregular), trying to conceive, following changes to your baby and your body during pregnancy, or navigating perimenopause symptoms, Flo is here to support you. Join 500 million users* who use Flo’s science-backed insights, created with 100+ doctors and medical experts, to better understand their menstrual cycle. Is my data safe with Flo? Your health data deserves the highest level of protection. Flo was recognized as ISO 27001/ISMS Team of the Year at the 2025 PICCASO Privacy and Security Awards, honoring our excellence in information security management and long-standing commitment to privacy-first design. - Anonymous Mode: Use the Flo period tracker without linking your name, email, or personal identifiers - Dual ISO certification: Industry-leading security standards to keep your data safe - Secret Chats: Connect with like-minded members who share tips and personal experiences Why choose Flo for period and ovulation tracking? Flo is more than a basic calendar — it’s a smart period tracker designed to help you notice patterns over time. - Log 70+ symptoms and moods to receive more personalized menstrual cycle insights - Support for irregular periods, pre-period symptoms, and cycle changes - Clear summaries you can share with your doctor - An accurate period tracker to help you plan ahead with confidence (Flo is not a method of birth control) Can Flo support my Trying To Conceive (TTC) journey? Flo offers educational features to support your journey to conceive and better understand fertility. - Fertile window and ovulation predictions based on your logged period data - BBT (basal body temperature) tracking - Daily insights to help you prepare to conceive a baby - Partner tools to support shared awareness How does Flo support my pregnancy by week? Once you conceive, switch to Flo for Pregnancy for useful checklists and structured, week-by-week guidance. - Pregnancy tracking with weekly updates as your baby develops - Visuals and diagrams to help explain pregnancy changes - Symptom tracking, reminders, and organization tools - Expert-reviewed content and community stories for peace of mind Is Flo suitable for teens and first periods? Flo provides a safe space for teens to track their first period with age-appropriate education, helping them navigate puberty confidently. Can Flo help me manage perimenopause symptoms? Track changes during perimenopause with tools designed for this life stage. - Perimenopause Score to follow symptom changes month by month - Track cycle-related changes in sleep, energy, mood, and well-being - Clear, personalized insights What do I get with Flo Premium? Unlock deeper, personalized insights and advanced tracking tools with Flo Premium. - Daily, personalized insights - Expert-led video courses on fertility, pregnancy, and birth - In-depth pregnancy features for every milestone and baby stage - Symptom Checker** that provides educational information on PCOS, endometriosis, and fibroids symptoms - Ovulation insights to support your TTC journey - 24/7 virtual Health Assistant for educational support - Flo for Partners: Share updates like menstrual cycle predictions or pregnancy progress, and always stay in control of what you share with your partner Medical disclaimer Flo does not provide medical advice, diagnosis, or treatment, and is not a method of birth control. Predictions are for informational purposes only. Always consult a qualified healthcare professional. Download Flo today and join millions using a trusted period tracker, pregnancy app, and fertility companion. *Total number of users who downloaded Flo, July 2026 **Symptom checker not available in the UK or EU Privacy Policy: https://flo.health/privacy-policy Terms of Use: https://flo.health/terms-of-service

Screenshots

Period Tracker Period Calendar4 screens
Flo Cycle & Period Tracker4 screens

Verdict

The call

The clearest difference is review sentiment: Period Tracker Period Calendar at 88% against Flo Cycle & Period Tracker's 46%. Period Tracker Period Calendar also leads on rating (4.9 vs 4.7). Flo Cycle & Period Tracker's advantage is ads (none vs shown) and ratings volume (2M vs 174K). On price, update cadence, 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. Period Tracker Period Calendar sells 16 in-app purchases, starting at $0.99 per 7 days and Flo Cycle & Period Tracker sells 11 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Period Tracker Period Calendar holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Flo Cycle & Period Tracker has 2M ratings behind it against 174K, so its average is the more settled of the two. Written reviews point the same way: 88% of Period Tracker Period Calendar's written reviews are positive against 46% of Flo Cycle & Period Tracker's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 9 days. Both last shipped on September 24, 2026.

Scorecard5 real differences · 6 level
Period Tracker Period Calendar versus Flo Cycle & Period Tracker: the parameters behind the verdict, then further details
ParameterPeriod Tracker Period CalendarFlo Cycle & Period Tracker
PriceFreeFree
Rating4.9 (174K ratings) — better4.7 (2M ratings)
Positive reviews87.9% of reviews — better46.5% of reviews
Number of ratings174K2M — better
Update frequencyEvery 9 daysEvery 9 days
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#53#3 — better
DevicesiPhone, iPod, Apple Watch — betteriPhone, Apple Watch
Requires iOS15.0 — better16.0
Further details — not scored
Size282 MB277 MB
Age rating12+12+
DeveloperABISHKKING LIMITED.FLO HEALTH UK LIMITED

Customer experience

Period Tracker Period Calendar

All ratings173,711 ratings
Positive98.3%
Neutral0.6%
Negative1.1%
Written reviews1,693 reviews
Positive87.9%
Neutral3.1%
Negative9.0%

Flo Cycle & Period Tracker

All ratings1,973,974 ratings
Positive93.8%
Neutral2.8%
Negative3.4%
Written reviews8,658 reviews
Positive46.5%
Neutral11.4%
Negative42.1%

User reviews

Period Tracker Period Calendar

From 174K App Store ratings

What we love

  • ⭐ Accurate period tracking
  • 📆 Helpful calendar and diary features
  • 🌟 Customizable themes and pets
  • 🔍 Comprehensive symptom and health tracking
  • 🗓️ Reliable period and ovulation predictions

Room to improve

  • 🔍 Unclear symptom definitions
  • 🔔 Intrusive and unskippable ads
  • 🔒 Concerns about data privacy and security
  • 🔢 Inaccurate period and ovulation predictions
  • 🔀 Difficulty in adjusting past cycle data

Flo Cycle & Period Tracker

From 2M App Store ratings

What we love

  • 🚀 Accurate period predictions
  • 📊 Helpful insights and information
  • 🤝 Supportive community
  • 🗓️ Useful tracking features
  • 💻 Great app design and interface

Room to improve

  • 💰 Excessive push for premium subscription
  • 🔒 Privacy concerns around data sharing
  • 🤖 Lack of inclusivity for non-binary users
  • 🚫 Paywall for basic health information
  • 🙄 Annoying notifications and ads

Bugs and requests

Period Tracker Period Calendar

Reported bugs

3 issues
  • App crashes or freezes on launch
  • Sync and backup issues leading to data loss
  • Inconsistent period and ovulation predictions

Requested features

6 requests
  • Add option to track miscarriage or abortion
  • Improve symptom tracking with more detailed options
  • Implement a dark mode or more theme options
  • Provide better integration with health tracking apps
  • Allow users to easily adjust past cycle data
Show 1 more
  • Offer more granular control over notifications

Flo Cycle & Period Tracker

Reported bugs

4 issues
  • Inaccurate period/ovulation predictions
  • Inability to edit cycle data
  • Disappearing articles and insights
  • Syncing issues with other health apps

Requested features

6 requests
  • Custom symptom tracking options
  • Improved pregnancy tracking features
  • Menstrual migraine tracking
  • Breastfeeding/postpartum tracking
  • Expanded community features
Show 1 more
  • More localized content and insights

In-app purchases

16 purchases

Period Tracker Period Calendar

Subscriptions15
  • 7-Day Premium$0.997 Days
  • Weekly Premium7 Days trial$1.497 Days
  • Premium Monthly$9.991 Month
Show 12 more
  • Monthly Membership7 Days trial$9.991 Month
  • Pro: Full Access$14.991 Year
  • Holiday deals7 Days trial$19.991 Year
  • Period & Ovulation Calendar$24.991 Year
  • Period & Pregnancy Tracker7 Days trial$39.991 Year
  • Yearly Premium7 Days trial$39.991 Year
  • Yearly Membership7 Days trial$39.991 Year
  • Ovulation & Period Tracker7 Days trial$49.991 Year
  • Premium Yearly7 Days trial$49.991 Year
  • Pro: Period Calendar7 Days trial$49.991 Year
  • Period & Ovulation Tracker7 Days trial$49.991 Year
  • Period and Ovulation Calendar7 Days trial$49.991 Year
One-time1
  • Remove the Ads$2.99
11 purchases

Flo Cycle & Period Tracker

Subscriptions11
  • Flo Premium7 Days trial$1.997 Days
  • Flo Premium$1.997 Days
  • Flo Premium7 Days trial$2.897 Days
Show 8 more
  • Flo Premium7 Days trial$7.497 Days
  • Flo Ovulation & Health tracker$11.491 Month
  • Flo Premium$14.991 Year
  • Flo Ovulation & Health tracker$14.991 Month
  • Flo Birth Control Reminder14 Days trial$43.991 Year
  • Flo Premium$47.991 Year
  • Flo Pregnancy Tracker7 Days trial$49.991 Year
  • Flo Premium14 Days trial$59.991 Year

Questions

Is Period Tracker Period Calendar free?
Period Tracker Period Calendar is free to download, with in-app purchases available.
Is Flo Cycle & Period Tracker free?
Flo Cycle & Period Tracker is free to download, with in-app purchases available.
Which has better reviews, Period Tracker Period Calendar or Flo Cycle & Period Tracker?
Period Tracker Period Calendar is rated higher. Period Tracker Period Calendar averages 4.9 out of 5 from 174K ratings, while Flo Cycle & Period Tracker averages 4.7 from 2M ratings.
Do Period Tracker Period Calendar or Flo Cycle & Period Tracker have ads?
Period Tracker Period Calendar shows ads; Flo Cycle & Period Tracker does not.
Which is updated more often, Period Tracker Period Calendar or Flo Cycle & Period Tracker?
Period Tracker Period Calendar ships an update every 9 days, and Flo Cycle & Period Tracker every 9 days. Most recently, Period Tracker Period Calendar was updated on September 24, 2026 and Flo Cycle & Period Tracker on September 24, 2026.
Which is more popular, Period Tracker Period Calendar or Flo Cycle & Period Tracker?
Period Tracker Period Calendar currently peaks at #53 in the App Store charts, and Flo Cycle & Period Tracker at #3. Chart position reflects recent download velocity rather than total install base.

Other comparisons