Comparison

Fertility Friend FF Tracker vs Oona

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

Oona

Simplify sleep training with guided timers and progress tracking. This app offers step-by-step support, customizable plans, and visual charts to help parents manage their baby's sleep routines.

Highlights
  • Step-by-step sleep training support
  • Customizable sleep plans
  • Built-in timers for wait intervals
  • Progress tracking with visual charts
  • Detailed night logs and insights
  • Ferber method guidance
Features
Read full description

Sleep training can feel overwhelming, whether you are navigating bedtime, overnight wake-ups, or daytime naps. Oona brings clarity to the process with simple instructions, built-in timers, and detailed progress tracking. Whether you are following the Ferber method or one of its popular variations, Oona helps you manage each step of night and nap training with less guesswork, so you can focus on what matters most: helping your baby build healthy sleep habits. App Features at a Glance 1. Trainer Step-by-step support throughout every night and nap training session. • Track crying, sleep, wake-ups, and check-ins with a single tap • Follow clear, simple instructions at every stage • Use built-in timers to keep wait intervals and check-ins on track • Switch between night and nap training based on your baby’s schedule 2. Sleep Plans Choose or create separate plans for nighttime sleep and daytime naps. • Select from preset Ferber-style night and nap plans • Customize wait intervals and check-in durations • Create your own schedule from scratch • Save multiple plans as your baby’s sleep needs change 3. Journey See progress across nights and naps over time. • Visual charts show trends in falling asleep, crying, wake-ups, check-ins, and more • Review completed night and nap sessions in one timeline • Tap any session to view detailed sleep training data 4. Session Details Get a closer look at each night or nap training session. • View a visual timeline of every tracked event • Review crying time, sleep duration, wake-ups, and check-ins • Edit entries and add personal notes for additional context 5. FAQ Find clear guidance for both night and nap training. • Read trusted information based on the Ferber method • Learn how nighttime sleep training differs from nap training • Find easy-to-understand answers to common questions • Get guidance for challenging moments and less common situations

Screenshots

Fertility Friend FF Tracker4 screens
Oona4 screens

Verdict

The call

The clearest difference is price: Fertility Friend FF Tracker at Free against Oona's $1.99. Fertility Friend FF Tracker also leads on ratings volume (7.4K vs 22) and update cadence (weekly vs monthly). Oona's advantage is in-app purchases (none vs 4) and review sentiment (100% vs 78%). On rating, ads, device support and iOS requirement 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

Fertility Friend FF Tracker is free to download; Oona costs $1.99 up front. Fertility Friend FF Tracker sells 4 one-off in-app purchases. Oona 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 Oona. That said, the two scores are not equally well evidenced: Fertility Friend FF Tracker has 7.4K ratings behind it against 22, so its average is the more settled of the two. Written reviews are what separate them: 78% of Fertility Friend FF Tracker's written reviews are positive against 100% of Oona's.

UpkeepUpdate frequency

Fertility Friend FF Tracker ships an update weekly, Oona monthly. Both last shipped on September 22, 2026.

Scorecard6 real differences · 4 level
Fertility Friend FF Tracker versus Oona: the parameters behind the verdict, then further details
ParameterFertility Friend FF TrackerOona
PriceFree — better$1.99
Rating4.8 (7.4K ratings)4.9 (22 ratings) — better
Positive reviews77.9% of reviews100.0% of reviews — better
Number of ratings7.4K — better22
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.1 — better
Further details — not scored
Size33 MB36 MB
Age rating17+4+
DeveloperTamtris Web Services Inc.Thomas Pang

Customer experience

Fertility Friend FF Tracker

All ratings7,402 ratings
Positive96.1%
Neutral1.6%
Negative2.3%
Written reviews349 reviews
Positive77.9%
Neutral6.6%
Negative15.5%

Oona

All ratings22 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews16 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

Oona

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
None

Oona

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 Oona free?
Oona costs $1.99, with no in-app purchases.
Which has better reviews, Fertility Friend FF Tracker or Oona?
Oona is rated higher. Fertility Friend FF Tracker averages 4.8 out of 5 from 7.4K ratings, while Oona averages 4.9 from 22 ratings.
Do Fertility Friend FF Tracker or Oona have ads?
Neither Fertility Friend FF Tracker nor Oona shows ads.
Which is updated more often, Fertility Friend FF Tracker or Oona?
Fertility Friend FF Tracker ships an update weekly, and Oona monthly. Most recently, Fertility Friend FF Tracker was updated on September 22, 2026 and Oona on September 22, 2026.

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