Comparison

Fertility Friend FF Tracker vs TempCurve BBT Chart

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

TempCurve BBT Chart

Features
Read full description

TempCurve is a simple, private iOS app for women trying to conceive (TTC) who want to track their basal body temperature (BBT) and confirm ovulation manually. Key features: - Log daily basal body temperature in Fahrenheit or Celsius - 3-over-6 rule algorithm to confirm biphasic temperature shifts and ovulation - Interactive temperature curve chart showing your last 10 records and Coverline - Physiological status dashboard showing confirmed ovulation date or logging guidance - History list grouped by month with swipe-to-delete action - Export BBT history to CSV or clear all data locally - Fully offline with no accounts, no ads, and no cloud data tracking TempCurve is designed for informational and general wellness purposes only. It is not intended to be used for contraception, medical advice, diagnosis, or treatment.

Screenshots

Fertility Friend FF Tracker4 screens
TempCurve BBT Chart4 screens

Verdict

The call

The clearest difference is in-app purchases: TempCurve BBT Chart at none against Fertility Friend FF Tracker's 4. Fertility Friend FF Tracker's advantage is update cadence (weekly vs monthly). On price, 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

Both are free to download. Fertility Friend FF Tracker sells 4 one-off in-app purchases. TempCurve BBT Chart asks for nothing beyond the download.

UpkeepUpdate frequency

Fertility Friend FF Tracker ships an update weekly, TempCurve BBT Chart monthly. The most recent releases landed on October 26, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
Fertility Friend FF Tracker versus TempCurve BBT Chart: the parameters behind the verdict, then further details
ParameterFertility Friend FF TrackerTempCurve BBT Chart
PriceFreeFree
Rating4.8 (7.4K ratings) — better—
Positive reviews78.8% of reviews—
Number of ratings7.4K — better—
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.6 — better17.0
Further details — not scored
Size33 MB4 MB
Age rating17+4+
DeveloperTamtris Web Services Inc.拥军 刘

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

TempCurve BBT Chart

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

TempCurve BBT Chart

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 TempCurve BBT Chart free?
TempCurve BBT Chart is free to download, with no in-app purchases.
Do Fertility Friend FF Tracker or TempCurve BBT Chart have ads?
Neither Fertility Friend FF Tracker nor TempCurve BBT Chart shows ads.
Which is updated more often, Fertility Friend FF Tracker or TempCurve BBT Chart?
Fertility Friend FF Tracker ships an update weekly, and TempCurve BBT Chart monthly. Most recently, Fertility Friend FF Tracker was updated on October 26, 2026 and TempCurve BBT Chart on October 9, 2026.

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