Comparison

Fertility Friend FF Tracker vs Period

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

Head to head
About

Fertility Friend FF Tracker

This app helps women track their ovulation and fertile days with advanced charting tools. It provides personalized insights into your cycle, helping you understand your fertility signs and maximize your chances of conception. Millions of women trust it for accurate cycle analysis and pregnancy tracking.

Highlights
  • Ovulation detection
  • Fertile window prediction
  • BBT and cervical fluid tracking
  • Period and symptom logging
  • Interactive fertility charts
  • TTC educational library
  • Pregnancy monitoring
Read full description

Track ovulation with confidence with the gold standard fertility charting app, trusted for over 25 years. Fertility Friend helps to accurately find your most fertile days, understand your ovulation pattern, and learn more about your unique cycle. Join the millions of women who have used Fertility Friend while trying to conceive, including over 1 million who recorded positive pregnancy tests in the app. Track your period and key fertility signs (BBT, cervical fluid, OPKs, symptoms). Fertility Friend will automatically create your chart, highlight your fertile window, and provide personalized insights, including when ovulation likely occurred and when to test for pregnancy. Fertility Friend teaches you how to chart, what your signs mean, and gives you the confidence to never miss a fertile opportunity. What’s FREE: - We do not sell or share your data or display ads - 30-day trial of premium features (No credit card, no auto-charge) - Automatic ovulation detection - Use Fertility Friend’s advanced (default) accurate ovulation detector or choose ovulation detection based on the Fertility Awareness Method (FAM) - Interactive fertility chart with coverline and symptom display - Color-coded fertility calendar: see your period, fertile days, ovulation and more at a glance - Detailed and customizable data entry: period, BBT, OPK, CM, symptoms, meds, LH tests… - Sync with Apple Health and Oura (automatic import of temps, heart rate, sleep, and more) - Graphical cycle progress bar/ticker display - Daily data summary - Period tracking - Menstrual cycle statistics: cycle length, phase length, ovulation dates - Extensive TTC educational library: videos, lessons, quizzes, games, articles - Searchable gallery of 240,000+ shared cycles. - View real life BBT charts filtered by keywords - Sharing possibilities (optional) - Dark Mode and custom color themes - Companion access to FertilityFriend.com What’s PREMIUM (Highlights): - All Free features plus - Advanced fertility insights and analysis - More graphs & detailed interpretations - Enhanced data display on chart and calendar - Cycle comparison tools - Pregnancy Monitor - Pregnancy Tracker - Charts “Like Mine” gallery search - Stats display on Chart Gallery searches - Pattern detection - Private, supportive community - Additional expert tools developed over decades Fertility Friend offers unmatched experience, accuracy, and depth to help you understand your cycle with confidence. Important: This app provides educational estimates only and must not be used to avoid pregnancy or schedule medical procedures. Always consult your healthcare provider for medical advice.

About

Period

Track your menstrual cycle, log period dates, ovulation test results, and symptoms. Gain insights into fertility probability based on your cycle length. This app helps predict periods and monitor cycles.

Highlights
  • Menstrual cycle tracking
  • Period logging
  • Ovulation test logging
  • Symptom tracking
  • Fertility probability insights
  • Cycle length comparison
Read full description

View where you are in your cycle with the Period Tracker app. You have the option to manually log your periods, ovulation test results and keep track of your menstrual cycle symptoms. Get insights into how the probability of peak fertility varies for women with the same cycle length as you. This app is designed for use by women who want to predict their periods, track their cycles or try for a baby. It should not be used as a method of contraception.

Screenshots

Fertility Friend FF Tracker4 screens
Period4 screens

Verdict

The call

The clearest difference is in-app purchases: Period at none against Fertility Friend FF Tracker's 4. Period also leads on iOS requirement (13.0 vs 16.6). Fertility Friend FF Tracker's advantage is review sentiment (79% vs 54%) and update cadence (weekly vs monthly). On price, rating, ratings volume and ads 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. Fertility Friend FF Tracker sells 4 one-off in-app purchases. Period asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Fertility Friend FF Tracker against 4.9 for Period. Both are backed by a comparable volume of ratings — 7.5K and 2.8K respectively. Written reviews are what separate them: 79% of Fertility Friend FF Tracker's written reviews are positive against 54% of Period's.

UpkeepUpdate frequency

Fertility Friend FF Tracker ships an update weekly, Period monthly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Fertility Friend FF Tracker versus Period: the parameters behind the verdict, then further details
ParameterFertility Friend FF TrackerPeriod
PriceFreeFree
Rating4.8 (7.5K ratings)4.9 (2.8K ratings) — better
Positive reviews78.8% of reviews — better53.8% of reviews
Number of ratings7.5K — better2.8K
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.613.0 — better
Further details — not scored
Size33 MB56 MB
Age rating17+12+
DeveloperTamtris Web Services Inc.SPD Development Company Ltd

Customer experience

Fertility Friend FF Tracker

All ratings7,442 ratings
Positive96.1%
Neutral1.6%
Negative2.3%
Written reviews386 reviews
Positive78.8%
Neutral7.0%
Negative14.2%

Period

All ratings2,408 ratings
Positive97.0%
Neutral1.0%
Negative2.0%
Written reviews65 reviews
Positive53.8%
Neutral13.8%
Negative32.3%

User reviews

Fertility Friend FF Tracker

From 7.5K App Store ratings

What we love

  • 🚀 Accurate predictions
  • 💡 Comprehensive tracking features
  • 👍 Helpful educational resources
  • 🚀 Detailed data analysis
  • 🚀 Customizable symptom tracking

Room to improve

  • 🐛 Frequent app crashes
  • 💰 Expensive premium features
  • 🔒 Privacy concerns
  • 🕰️ Outdated user interface
  • 🐛 Inconsistent data syncing

Period

From 2.8K App Store ratings

What we love

  • 👍 Accurate tracking
  • 🚀 Easy to use
  • 💡 Helpful for fertility tracking

Room to improve

  • 🐛 Notifications not working as expected
  • 🐛 Data loss after updates
  • 🐛 Broken links in the app
  • 💡 No option to log basal body temperature

Bugs and requests

Fertility Friend FF Tracker

Reported bugs

4 issues
  • Unable to create account
  • Randomly deleting custom data
  • Inaccurate ovulation predictions
  • Pregnancy data not transferring

Requested features

5 requests
  • Offline mode with data syncing
  • Integration with Apple Health
  • More affordable subscription options
  • Improved community features
  • Streamlined data entry process

Period

Reported bugs

3 issues
  • Dates and data getting changed after updates
  • Calendar not populating after updates
  • Whole calendar getting erased after updates

Requested features

2 requests
  • Add option to log basal body temperature
  • Improve notification customization

In-app purchases

4 purchases

Fertility Friend FF Tracker

One-time4
  • 30 Days VIP Membership$10.99
  • 90 Days VIP Membership$21.99
  • 1 Year VIP - Special Rate$23.99
Show 1 more
  • 1 Year VIP Membership$45.99
None

Period

No in-app purchases

Questions

Is Fertility Friend FF Tracker free?
Fertility Friend FF Tracker is free to download, with in-app purchases available.
Is Period free?
Period is free to download, with no in-app purchases.
Which has better reviews, Fertility Friend FF Tracker or Period?
Period is rated higher. Fertility Friend FF Tracker averages 4.8 out of 5 from 7.5K ratings, while Period averages 4.9 from 2.8K ratings.
Do Fertility Friend FF Tracker or Period have ads?
Neither Fertility Friend FF Tracker nor Period shows ads.
Which is updated more often, Fertility Friend FF Tracker or Period?
Fertility Friend FF Tracker ships an update weekly, and Period monthly. Most recently, Fertility Friend FF Tracker was updated on November 1, 2026 and Period on October 31, 2026.

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