63
BU Score
Solid
Menstruation Kalender Pro
✍️ bumetric analysis
“
Menstruation Kalender Pro is an iOS app from EFRAC in the Health & Fitness category, currently rated 4.7★ across 15 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Our BU Score puts it at 63: Solid (established niche player). For a Health & Fitness app, that means established niche player.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 7 of 7 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($0.00)METRIC | +$2,800 | |
| Excellent rating (4.7★)METRIC | +$2,200 | |
| 5 starREVIEW | +$1,800 | |
| Mature app (14y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| Localized (6 languages)METRIC | +$600 | |
| Pre-traction phase (15 ratings)METRIC | −$300 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 3 MB🔞 4+📱 iOS 15.6+🔖 v6.6.1🔄 updated 8mo ago🌐 EN, FR, DE, PL, RU +1📂 Health & Fitness💰 Paid🚀 Launched 2011 (14y old)
📝 About this app
We spent many years creating the best period and ovulation tracker. We implemented all features requested by our users and put a lot of heart into the app.
Features:
• Automatically predicts menstruation periods.
• Keeps history of your menstrual cycles.
• Full integratation with the Health app (uses HealthKit framework).
• Spotlight Search: find your notes, symptoms or even the date of your next period.
• Contains a native Apple Watch app.
• Includes a Glance view for the Apple Watch.
• Includes a Notification Center widget (extension).
• Can track up to four different symptoms (e.g. migraine or abdominal pain).
• Symptom names may be changed.
• Calendar colors may be changed.
• Can track body temperature (in Fahrenheit and Celsius degrees).
• Displays basal body temperature charts.
• Text notes (e.g. about period, taken medications, mood, friends) may be attached to each day.
• Automatically predicts probable ovulation days.
• The user interface is easy to use and looks good.
• Password protection (if you forgot your password, please enter: passwordrecovery111).
Why should you choose our application?
• It has a modern and elegant look and is easy to navigate.
• We constantly add new features and listen to you.
• The application is universal: it works on all your iOS devices (e.g. iPhone, iPod Touch, iPad) and on your Apple TV.
Features:
• Automatically predicts menstruation periods.
• Keeps history of your menstrual cycles.
• Full integratation with the Health app (uses HealthKit framework).
• Spotlight Search: find your notes, symptoms or even the date of your next period.
• Contains a native Apple Watch app.
• Includes a Glance view for the Apple Watch.
• Includes a Notification Center widget (extension).
• Can track up to four different symptoms (e.g. migraine or abdominal pain).
• Symptom names may be changed.
• Calendar colors may be changed.
• Can track body temperature (in Fahrenheit and Celsius degrees).
• Displays basal body temperature charts.
• Text notes (e.g. about period, taken medications, mood, friends) may be attached to each day.
• Automatically predicts probable ovulation days.
• The user interface is easy to use and looks good.
• Password protection (if you forgot your password, please enter: passwordrecovery111).
Why should you choose our application?
• It has a modern and elegant look and is easy to navigate.
• We constantly add new features and listen to you.
• The application is universal: it works on all your iOS devices (e.g. iPhone, iPod Touch, iPad) and on your Apple TV.
🆕 What's New · v6.6.1
• Improved user interface
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Menstruation Kalender Pro
- Developer
- EFRAC
- Bundle ID
- com.efrac.movcalu
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 4+
- Languages
- EN, FR, DE, PL, RU, ES
Company
- Website
- www.efrac.com
- Tagline
- EFRAC
- Description
- Software for mobile phones, tablets, e-book readers and personal computers. Application development in Java (Android, J2ME midlets), HTML 5 (CSS, Javascript), Objective C, Swift.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $18.5K/mo
- Top-grossing rank
- Outside top 100 in US Health & Fitness
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- Not found
- Not found
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
- Total raised
- Not found
- Last round
- Not found
- Investors
- Not found
- Crunchbase
- Not found
- AngelList
- Not found
Press & Links
- Articles found
- Not found
- Listed on
- Not found
- Blog
- Not found
- Press / News
- Not found
Contacts & Socials
- Socials
- Not found
- Not found
- Phone
- Not found
- Contact page
- Not found
- About page
- Not found
⭐Recent App Store Reviews49 latest · avg 4.1★ · 49.0% 5★ · 8.2% 1★
5★24 (49%)
4★14 (29%)
3★7 (14%)
2★0 (0%)
1★4 (8%)
+0 ratings/week
Praise: great ×18 love ×11 awesome ×4 recommend ×4 best ×3Complaints: crash ×1 hate ×1
Top positive
★★★★★ Great app!!
Easy to use…
★★★★★ Awesome!
Awesome app! Very detailed!…
Top negative
★☆☆☆☆ Unsureandtrying
This app was suggested to me by a friend who got pregnant after one month. I am used to a different app so I am liking the simplicity of this one. However I bought the app and I see notification on the icon but there is no way to check them…
★☆☆☆☆ Not working! iOS7
Really?? Paid twice for this app and it's still not working!…
📈Ratings growth15 ratings+1400% lifetimeShow 3-year history estimate ▾
Tracked (51 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
Full revenue analysis
Read the article-style breakdown for Menstruation Kalender Pro: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.