Comparison

Fertility Friend FF Tracker vs Harmony Within

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

Harmony Within

Access guided meditations, movement, and breathing exercises designed to reduce stress, improve sleep, and enhance overall well-being. Practices integrate mindfulness, somatic psychology, and affirmations for a holistic mind-body connection. Unlock progress tracking and offline access with a subscription.

Highlights
  • Guided meditation
  • Movement practices
  • Breathing exercises
  • Mindfulness integration
  • Progress tracking
  • Offline sync
Features
Read full description

Follow guided meditation, movement and breathing practices to bring harmony to your mind and body. Practices incorporate mindfulness, gentle movement, breathing, affirmations, guided imagery, somatic psychology and more. Taking time to tune in for meditative self care has potential to reduce stress, improve sleep, raise hopefulness, sharpen your focus, and boost overall health and wellness. Installing the Harmony Within app is free of charge. Sign up for the introductory plan to experience the transformational magic of Harmony Within mind-body practices. INFORMATION ABOUT THE APP AND PURCHASE OPTIONS By signing up, you will get access to subscription(s) that include features such as progress tracking, and offline sync. The download of Harmony Within is free of charge. No free trial offered. Should you use Harmony Within app to access in-app content via available subscription(s), a payment will be charged to your credit card through your App Store account . A subscription renews automatically unless canceled at least 24 hours prior to the end of the subscription period. There is no increase in price when renewing. Subscription(s) can be managed and auto-renewal turned off in Account Settings in the App Store after purchase. Read our full Terms of Service and our Privacy Policy: https://passion.io/terms-of-service https://passion.io/privacy-policy

Screenshots

Fertility Friend FF Tracker4 screens
Harmony Within3 screens

Verdict

The call

The clearest difference is ads: Fertility Friend FF Tracker at none against Harmony Within's shown. Fertility Friend FF Tracker also leads on ratings volume (7.4K vs 2) and update cadence (weekly vs monthly). Harmony Within's advantage is review sentiment (100% vs 79%). On price, rating, 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. Fertility Friend FF Tracker sells 4 one-off in-app purchases and Harmony Within sells 2 in-app purchases, starting at $10.00 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Harmony Within holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Fertility Friend FF Tracker has 7.4K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 79% of Fertility Friend FF Tracker's written reviews are positive against 100% of Harmony Within's.

UpkeepUpdate frequency

Fertility Friend FF Tracker ships an update weekly, Harmony Within monthly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Fertility Friend FF Tracker versus Harmony Within: the parameters behind the verdict, then further details
ParameterFertility Friend FF TrackerHarmony Within
PriceFreeFree
Rating4.8 (7.4K ratings)5.0 (2 ratings) — better
Positive reviews78.8% of reviews100.0% of reviews — better
Number of ratings7.4K — better2
Update frequencyWeekly — betterMonthly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.1 — better
Further details — not scored
Size33 MB87 MB
Age rating17+4+
DeveloperTamtris Web Services Inc.Harmony Within Creations LLC

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%

Harmony Within

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Harmony Within

Not enough reviews yet to summarise bugs or requests.

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
2 purchases

Harmony Within

Subscriptions2
  • Harmony Wellness$10.001 Month
  • Harmony Fertility$25.001 Month

Questions

Is Fertility Friend FF Tracker free?
Fertility Friend FF Tracker is free to download, with in-app purchases available.
Is Harmony Within free?
Harmony Within is free to download, with in-app purchases available.
Which has better reviews, Fertility Friend FF Tracker or Harmony Within?
Harmony Within is rated higher. Fertility Friend FF Tracker averages 4.8 out of 5 from 7.4K ratings, while Harmony Within averages 5.0 from 2 ratings.
Do Fertility Friend FF Tracker or Harmony Within have ads?
Harmony Within shows ads; Fertility Friend FF Tracker does not.
Which is updated more often, Fertility Friend FF Tracker or Harmony Within?
Fertility Friend FF Tracker ships an update weekly, and Harmony Within monthly. Most recently, Fertility Friend FF Tracker was updated on October 26, 2026 and Harmony Within on October 24, 2026.

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