Comparison

FEMM Period Ovulation Tracker vs Tempdrop

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

Head to head
About

FEMM Period Ovulation Tracker

This app helps women track their menstrual cycles, symptoms, and fertility. It offers insights into hormonal health and connects users with healthcare professionals for personalized care and education.

Highlights
  • Cycle and period tracking
  • Symptom logging (physical & emotional)
  • Daily data input reminders
  • Cycle pattern charts
  • Medication tracking
  • Shareable health charts
  • Hormone knowledge base
Features
Read full description

Are you looking to track your menstrual cycles and symptoms, get pregnant or avoid pregnancy? The FEMM app is more than just a period tracker: it provides you with cutting edge science that helps you keep track of your health, understand what is going on with your body, flag potential issues and connect with a network of doctors and nurses to provide you the best health care. We’re a new revolution in women’s health! Empower yourself and be an active player in your health care with our easy to use app! FEATURES * Easy data input to track your cycle or period. * Track physical and emotional symptoms to better diagnose potential health problems. * Daily reminder. Never forget to input your data through our app's notification feature. * View several Charts on a screen to help you understand your patterns. * Track medications you are currently taking. * Email and/or print your charts to share with your doctor, friends or family * Various view styles let you see and interpret your cycles better: calendar view, chart view and the detailed chart view, which let you see your symptoms. * Understand your health and the interplay of hormones in your body through our knowledge base. CONTACT OUR TEAM TO HELP YOU FIND: * a FEMM-trained doctor or FEMM health center near you * a FEMM teacher who can teach you how to chart and understand the interplay of hormones in your body

About

Tempdrop

This app works with a specialized thermometer to track subtle overnight temperature changes. It helps identify hormonal fluctuations throughout the menstrual cycle, pinpoint ovulation, and predict cycle phases. The data supports fertility awareness and cycle tracking.

Highlights
  • Basal body temperature tracking
  • Ovulation pinpointing
  • Menstrual cycle prediction
  • Hormonal fluctuation correlation
  • Fertility awareness support
Features
Read full description

The Tempdrop app is designed to complement the Tempdrop device - a personalized user-specific thermometer that captures minute temperature variations throughout the night to pinpoint the basal body temperature. Detected variations in temperature correlate with hormonal fluctuations throughout the menstrual cycle. When used with the Tempdrop device, this app can help users to pinpoint ovulation and effectively track and predict the varying phases of the cycle. Disclaimer: The Tempdrop sensor and app are intended as complementary instruments to enhance your ability to monitor your fertility and share health details. The app and its wearable sensor, in themselves, are not, nor are they intended to be, a fertility monitor, a substitute for contraception, or a birth control method. We recognize the need of some to use the data and information provided to support ongoing health and menstrual cycle tracking, however, it is important to note that this should NOT be used as a substitute for an in-presence qualified professional, medical analysis, advice, guidance, or treatment. We strongly advise seeking a qualified Fertility Awareness instructor or other self-teaching resources to learn a symptothermal method and support your fertility journey. The provided interpretations and prediction guidelines are not suitable for use with irregular cycles. Optimal performance is dependent on correct and consistent use. Individual usage, wearing, input, and circumstances can affect the data. The user is fully responsible for the individual data inputs. The Tempdrop Sensor is approved for use in the USA, and is registered in the FDA database under registration number 3016099071. The device is classified as "Device, Fertility Diagnostic, Proceptive”. A link to the terms of use - https://www.tempdrop.com/pages/tos A link to the privacy policy - https://www.tempdrop.com/pages/privacy-policy

Screenshots

FEMM Period Ovulation Tracker4 screens
Tempdrop4 screens

Verdict

The call

The clearest difference is rating: FEMM Period Ovulation Tracker at 4.8 against Tempdrop's 4.2. FEMM Period Ovulation Tracker also leads on in-app purchases (none vs 6) and review sentiment (65% vs 39%). On price, update cadence, ads and device support 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. Tempdrop sells 6 in-app purchases, starting at $2.99 per month. FEMM Period Ovulation Tracker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

FEMM Period Ovulation Tracker holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: FEMM Period Ovulation Tracker has 4.1K ratings behind it against 711, so its average is the more settled of the two. Written reviews point the same way: 65% of FEMM Period Ovulation Tracker's written reviews are positive against 39% of Tempdrop's.

UpkeepUpdate frequency

FEMM Period Ovulation Tracker ships an update every 4 months, Tempdrop every 2 months. The most recent releases landed on October 22, 2026 and October 21, 2026 respectively.

Scorecard5 real differences · 5 level
FEMM Period Ovulation Tracker versus Tempdrop: the parameters behind the verdict, then further details
ParameterFEMM Period Ovulation TrackerTempdrop
PriceFreeFree
Rating4.8 (4.1K ratings) — better4.2 (711 ratings)
Positive reviews65.3% of reviews — better38.7% of reviews
Number of ratings4.1K — better711
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size26 MB103 MB
Age rating4+17+
DeveloperFEMM FoundationTempdrop Inc

Customer experience

FEMM Period Ovulation Tracker

All ratings3,860 ratings
Positive95.1%
Neutral2.2%
Negative2.7%
Written reviews245 reviews
Positive65.3%
Neutral13.1%
Negative21.6%

Tempdrop

All ratings711 ratings
Positive80.3%
Neutral6.2%
Negative13.5%
Written reviews168 reviews
Positive38.7%
Neutral18.5%
Negative42.9%

User reviews

FEMM Period Ovulation Tracker

From 4.1K App Store ratings

What we love

  • 💻 User-friendly interface
  • 🔍 Detailed cycle tracking
  • 🧠 Informative health insights
  • 🤝 Helpful for natural family planning
  • 🙌 Empowering for women's health

Room to improve

  • 🐛 Glitches and bugs with recent updates
  • 🕰️ Redundant date/cycle prompts
  • 🤔 Limited customization options
  • 🔍 Lack of export/sharing features
  • 🤷‍♀️ Confusing navigation at times

Tempdrop

From 711 App Store ratings

What we love

  • 🚀 Convenient and easy to use
  • 🚀 Accurate temperature tracking
  • 👍 Helpful for fertility awareness and family planning
  • 👍 Empowering for understanding one's body
  • 👍 Useful for tracking hormonal fluctuations

Room to improve

  • 🐛 Issues with app syncing and functionality
  • 🔍 Limited symptom and data tracking options
  • 💰 Expensive device and subscription model
  • 👎 Poor customer service and support
  • 👎 Unreliable hardware and short device lifespan

Bugs and requests

FEMM Period Ovulation Tracker

Reported bugs

4 issues
  • App crashes on opening after iOS updates
  • Date/cycle tracking gets mixed up or stuck
  • Symptom/observation data not saving properly
  • Analysis/charting features not functioning as expected

Requested features

6 requests
  • Add option to track seminal fluid observations
  • Integrate with Apple Health for seamless data sync
  • Expand mood/emotion tracking options
  • Improve date/cycle navigation and data entry
  • Provide better postpartum/breastfeeding support
Show 1 more
  • Offer calendar view in addition to chart view

Tempdrop

Reported bugs

4 issues
  • App crashes and freezes
  • Issues with syncing device data
  • Inaccurate cycle predictions and phase tracking
  • Temperature data changes over time

Requested features

5 requests
  • Improved sleep tracking capabilities
  • More customizable symptom and data tracking
  • Ability to manually confirm ovulation
  • Integration with other fertility/health apps
  • Support for irregular cycles and postpartum/breastfeeding phases

In-app purchases

None

FEMM Period Ovulation Tracker

No in-app purchases

6 purchases

Tempdrop

Subscriptions6
  • Tempdrop Promo Premium monthly2 Months trial$2.991 Month
  • Tempdrop Premium monthly2 Months trial$6.001 Month
  • Tempdrop Promo Premium quarterly2 Months trial$7.993 Months
Show 3 more
  • Tempdrop Premium quarterly2 Months trial$15.003 Months
  • Tempdrop Promo Premium yearly2 Months trial$24.991 Year
  • Tempdrop Premium yearly*2 Months trial$48.001 Year

Questions

Is FEMM Period Ovulation Tracker free?
FEMM Period Ovulation Tracker is free to download, with no in-app purchases.
Is Tempdrop free?
Tempdrop is free to download, with in-app purchases available.
Which has better reviews, FEMM Period Ovulation Tracker or Tempdrop?
FEMM Period Ovulation Tracker is rated higher. FEMM Period Ovulation Tracker averages 4.8 out of 5 from 4.1K ratings, while Tempdrop averages 4.2 from 711 ratings.
Do FEMM Period Ovulation Tracker or Tempdrop have ads?
Neither FEMM Period Ovulation Tracker nor Tempdrop shows ads.
Which is updated more often, FEMM Period Ovulation Tracker or Tempdrop?
FEMM Period Ovulation Tracker ships an update every 4 months, and Tempdrop every 2 months. Most recently, FEMM Period Ovulation Tracker was updated on October 22, 2026 and Tempdrop on October 21, 2026.

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