Comparison

femSense fertility vs ovolution

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

Head to head
About

femSense fertility

This app helps users understand their menstrual cycle and fertility. It can be used to plan a pregnancy by identifying fertile days or as a free period calendar to track cycles and symptoms. It works with a smart sensor patch or as a standalone cycle tracker.

Highlights
  • Fertility tracking
  • Ovulation prediction
  • Cycle calendar
  • Period tracking
  • Symptom logging
  • Smart sensor patch integration
  • NFC data reading
Features
Read full description

There for you in every situation - femSense helps you to understand your cycle and your fertility. - Planning a pregnancy: femSense reliably shows you when you are ovulating and when your fertile days are. That way, you can easily plan a pregnancy. - Free period calendar: You can also use femSense as a cycle tracker to get to know your own body better. The app always tells you which cycle phase you are in and when your next period is due. Better together: our app and our smart patch. How femSense works - The temperature method is cumbersome & old-fashioned? We don't think so. We've brought it into the 21st century and developed a smart sensor patch that measures your basal body temperature 24/7. The attendant app tells you when you're ovulating and when your fertile days are. - No patch, no problem. You can also use the femSense app as a free cycle tracking app without a patch, and without any annoying ads! In addition to your period, you can also track your symptoms and view recurring patterns in the stats. This way you will get to know your body even better and live in harmony with your cycle. It's that easy: Download the app, register, and select mode: - Want to understand your fertility and cycle better? Then choose "Fertility Awareness". - You want to have a baby? Then choose "Get pregnant". You can buy our patches directly in the app or in our online store. With the combination of the femSense app and the smart patch you can: - In cycle tracker mode, see your fertile phase and learn your daily fertility status (high fertility / low fertility). - In fertility mode, find out your 4 most fertile days and get pregnant in a targeted way. - Find out when (and if) you ovulated. What makes femSense so unique: - Our Hero, the smart patch, has an integrated temperature-sensitive sensor that continuously and all by itself records your body temperature readings at set time intervals, reliably detecting your ovulation. - Short wearing time: You wear the patch on a maximum of 7 days a month - the app tells you when. - Comfortable to wear: our patch is ultra-thin, discreet, skin-friendly (it's gentler on your skin than a conventional sensitive patch!) and medically tested. - NFC technology: you read your patch using low-radiation NFC technology. NFC stands for "Near Field Communication." You already know it from contactless payment and electronic passports. Your data is protected because the short reading distance makes it impossible to access it without permission. - Speaking of data. Privacy is a big concern for us We handle your data carefully and would NEVER sell it to third parties. Learn more about this on the femSense website under "Privacy Policy". Important: - femSense does not replace a consultation with a doctor. The information in the app is recommendations and cannot be used for medical purposes. Always seek medical advice before making medical decisions. - femSense is not (yet) an officially recognized means of contraception. - femSense is a registered trademark of SteadySense GmbH.

About

ovolution

This app helps users understand their natural menstrual cycle using the NFP method. It tracks body signs like temperature and cervical mucus to determine ovulation and fertile days. Features include cycle phase information, fertility tracking, and pregnancy monitoring.

Highlights
  • NFP rule evaluation
  • Digital NFP cycle sheet
  • Body sign documentation
  • Cycle phase display and forecast
  • Fertility and pregnancy mode
  • Cycle statistics and overview
  • NFP educational articles and videos
Features
Read full description

Your cycle app for NFP: Determine your ovulation and fertile days based on your waking temperature and a second body sign: cervical mucus or the cervix. The ovolution cycle app helps you to apply and understand the rules of NFP (Natural Family Planning). Get to know your cycle, find out more about the different cycle phases and when your next period is due. THE FERTILITY AND PREGNANCY MODE + Display of highly fertile days before ovulation + Calculation of the estimated due date + Display the weeks of pregnancy and the estimated due date + Monitor your pregnancy symptoms ALL FEATURES OF THE OVOLUTION APP: + Evaluation according to NFP rules + Digital NFP cycle sheet + Export function of your cycles as PDF incl. disturbances and notes + Documentation of numerous body signs (temperature, cervical mucus, cervix, LH tests, sex & libido, mood, digestion & hunger and much more) + clear calendar with display of cycle phases & forecast of the next 3 periods + information about your cycle phases + Cycle statistics (cycle length, period duration, earliest 1st higher measurement, length of your luteal phase and much more) + Overview of all your cycles entered so far + many articles and short videos on NFP, the natural cycle, other body signs and much more THE OVOLUTION APP ACCOMPANIES YOU IN EVERY PHASE OF LIFE. By installing and using the cycle app, you agree to the terms and conditions (https://ovolution.rocks/agb) of ovolution GmbH. Note: The ovolution app is a CE-compliant Class I medical device. The ovolution app is not a contraceptive app and must not be used for contraception.

Screenshots

femSense fertility4 screens

Verdict

The call

The clearest difference is rating: ovolution at 3.0 against femSense fertility's 2.4. ovolution also leads on update cadence (every 5 weeks vs every 3 months). femSense fertility's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price, monetization model, 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. ovolution sells 3 in-app purchases, starting at $1.99 per month. femSense fertility asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ovolution holds the better App Store score, 3.0 against 2.4. That said, the two scores are not equally well evidenced: femSense fertility has 21 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

femSense fertility ships an update every 3 months, ovolution every 5 weeks. The most recent releases landed on September 22, 2026 and June 26, 2026 respectively.

Scorecard5 real differences · 5 level
femSense fertility versus ovolution: the parameters behind the verdict, then further details
ParameterfemSense fertilityovolution
PriceFreeFree
Rating2.4 (21 ratings)3.0 (1 ratings) — better
Positive reviews17.4% of reviews—
Number of ratings21 — better1
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.0 — better15.6
Further details — not scored
Size63 MB117 MB
Age rating12+17+
DeveloperSteadySense GmbHovolution GmbH

In-app purchases

None

femSense fertility

No in-app purchases

3 purchases

ovolution

Subscriptions3
  • Monthly subscription$1.991 Month
  • Monthly Subscription$1.991 Month
  • Yearly subscription2 variants$19.991 Year

Questions

Is femSense fertility free?
femSense fertility is free to download, with no in-app purchases.
Is ovolution free?
ovolution is free to download, with in-app purchases available.
Which has better reviews, femSense fertility or ovolution?
ovolution is rated higher. femSense fertility averages 2.4 out of 5 from 21 ratings, while ovolution averages 3.0 from 1 ratings.
Do femSense fertility or ovolution have ads?
ovolution shows ads; femSense fertility does not.
Which is updated more often, femSense fertility or ovolution?
femSense fertility ships an update every 3 months, and ovolution every 5 weeks. Most recently, femSense fertility was updated on September 22, 2026 and ovolution on June 26, 2026.

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