Period & Ovulation Calculator is a cycle and fertility tracking app for women, available on iOS and Android.
Product velocity
Maintenance
Daily rank 🇺🇸
—
Health & Fitness
Sentiment
4.1
1k reviews
Nemesis
Clue Period & Cycle Tracker
The App DNA
What makes this app unique?
Users hire this app for low-friction cycle logging and pregnancy planning, seeking a simple alternative to complex medical-grade trackers.
For Women tracking menstrual cycles for health awareness or family planning purposes.
What does it look like?
Key features
Predicts upcoming period, ovulation dates, and fertile windows based on user-inputted cycle data
Secures sensitive health and cycle data with a user-defined passcode
Calculates expected labor dates and monitors pregnancy progress post-conception
Unlocks advanced app features via monthly or yearly recurring billing
How much does it cost?
Freemium model utilizes ad-supported free access to drive volume, with a subscription gate for advanced features.
Velocity
Maintenance developmentShow more...
5 versions in history. Development pace: maintenance.
Who built it?
AESTHETIC WIDGETS
2 apps tracked · Health & Fitness
My Baby Heart Sounds AppUser Sentiment
What do users think recently?
Recent user voice shows an excited sentiment. Users appreciate accurate cycle predictions and fertility tracking provide significant value for users planning conception journeys and clean and accessible interface design makes daily cycle logging feel simple and highly intuitive.
How are ratings & reviews evolving?
What users say, by theme
- Accurate cycle predictions and fertility tracking provide significant value for users planning conception journeys
- Clean and accessible interface design makes daily cycle logging feel simple and highly intuitive
- Excessive advertisement frequency disrupts the user experience and creates frustration during daily navigation
6 of 6 recent reviews analyzed · limited sample · Excited overall
Read the full review analysisCompetition
Competitive landscape for Period & Ovulation Calculator
How's the Health & Fitness market?
The app holds a 4.4 rating on iOS and 3.8 on Android, with recent expansion into new markets like DZ and TZ. The 0.6-star platform gap indicates inconsistent performance or ad-load experience between operating systems.
Read the market outlookThe rivals identified
By BioWink GmbH
With nearly 400,000 reviews and a high-velocity release cadence, Clue dominates the market through a science-backed, medical-grade positioning that sets the industry standard.
- Maintains a medically-focused, clinical interface that prioritizes data accuracy over casual aesthetic tracking features.
- Operates a high-frequency release cycle with 18 updates in six months, signaling rapid feature iteration.
- Leverages a strong brand-as-category identity that makes it the default choice for privacy-conscious users.
Period Tracker DeluxeContender
Period Tracker Period CalendarContender
Stardust Period TrackerContenderUnlock the head-to-head verdict: where this rival wins, and where it loses.
Access the full report for freeThe Analyst's Read
Key takeaways for Period & Ovulation Calculator
Where is it heading?
The casual cycle-tracking market is consolidating around specialized, high-trust platforms, leaving general-purpose apps exposed to churn. Future growth depends on balancing ad-supported volume with a more premium, less intrusive user experience.
- Excessive ad frequency in the latest release drives user frustration, which compounds the rating drag already visible on Android.
- Recent notification support additions improve daily engagement, signaling active feature investment rather than maintenance mode.
The SWOT
- Lightweight interface reduces logging friction for casual users
- Pin Lock protection builds necessary trust for sensitive health data
- Develop B2B partnerships with wellness clinics to move beyond ad-supported revenue
- Introduce wearable data syncing to compete with hardware-integrated rivals
Next best moves
Pivot ad-frequency to a rewarded-video model because ad-disruption is the top complaint → increase retention
+ 1 more prioritized moveThe counter-intuitive read
The app's lack of medical-grade depth is a feature, not a bug…
Read the full takeFeature gaps
Hardware integration (available in Premom but absent here) +1
Since the last report: The app shifted to a freemium monetization model and faces new user friction regarding ad load and platform-specific performance disparities.
Bottom line
The app maintains a functional core for cycle tracking, but the high ad-frequency risks long-term churn to clinical-grade rivals, so the PM should prioritize ad-load reduction to stabilize retention.
Unlock 2 critical frictions, 2 market threats, 1 more prioritized move and the analyst’s take.
Access the full report for freeReport last updated