81
BU Score
Excellent
Clue Perioden Kalender
✍️ BU Analytics Review
“
Clue Perioden Kalender is an iOS app from BioWink GmbH in the Health & Fitness category, currently rated 4.8★ across 394,028 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.
Our BU Score puts it at 81 — Excellent (strong product-market fit). For a Health & Fitness app, that means strong product-market fit.
Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.
creator
📊 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 13 of 13 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| High install base (394,028 ratings)METRIC | +$12,000 | |
| Paid app ($0.00)METRIC | +$2,800 | |
| Excellent rating (4.8★)METRIC | +$2,200 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| cancelledREVIEW | −$1,500 | |
| excellent appREVIEW | +$1,500 | |
| Mature app (12y old)METRIC | +$1,500 | |
| Multilingual (23 languages)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| annoying adsREVIEW | −$1,100 | |
| support teamREVIEW | +$900 |
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.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Feb 26
Mar 26
Apr 26
May 26
⭐ 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 →💾 258 MB🔞 12+📱 iOS 17.0+🔖 v273.0🔄 updated 5d ago🌐 AR, DA, NL, EN, FR +18📂 Health & Fitness💰 Paid🚀 Launched 2013 (12y old)
📝 About this app
Clue is the #1 women-led period and cycle tracker for understanding your body and how hormones shape your everyday experiences. Loved and trusted by over 100 million women and people with cycles worldwide, Clue supports confident, informed decisions about your health.
Whether you’re tracking your period, trying to conceive, navigating perimenopause or simply getting to know your body better, Clue’s got you covered.
Backed by science and headquartered in Berlin, your data with Clue is protected by some of the strictest data privacy laws in the world (GDPR).
New: Connect your wearable with Clue. Combine Clue Plus insights with your temperature trends, sleep, and heart rate biometrics to better understand your fertility and health.
PERIOD & MENSTRUAL CYCLE TRACKING
• Know when to expect your period and plan ahead with advanced, personalized predictions
• Discover your body’s unique patterns by tracking 100+ experiences connected to your cycle like feelings, PMS, cravings, pain, sex drive, and much more
• Review an analysis of your past periods and cycles, including average cycle length, period length, period flow, and cycle variation
• Log your birth control method, including pills, IUD, ring, patch, and more
• Set up calendar reminders for your period
• Sync your period data with Apple Health
• Get answers to your health questions with science-based content that breaks down complicated topics like fertility, STIs, and the science of sex into easy-to-understand articles
FERTILITY & OVULATION CALCULATOR
Clue’s clinically-tested technology takes the mystery out of getting pregnant and can easily tell you your most fertile days.
• Get personalized ovulation and fertility predictions for the best time to try or do home insemination
• Access tips and advice from fertility experts to help you understand the science behind getting pregnant
PREGNANCY TRACKING
• Follow the growth of your baby with weekly updates on size, weight, and development
• Track your body's changes during pregnancy, like increased smell and taste, pregnancy glow, sleep quality, the supplements you take, and more
• Receive weekly tips and support from OB-GYNs and Nurse Midwives
PERIMENOPAUSE
• Track hot flashes, sleep changes, your mood, and more
• Stay on top of your changing cycle
• Learn how your body is changing with expert-led articles
Get the most out of Clue, plus access to all four tracking modes (like Clue Conceive and Clue Pregnancy), with a Clue Plus subscription!
A few legal details:
After you choose the Clue subscription that’s right for you & confirm your purchase, the credit card associated with your iTunes Account will be charged. Once purchased, your subscription will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. If you currently have a free trial, any unused time will be forfeited when you purchase a subscription.
If you want to renew your subscription, your account will be charged the same amount you paid for your initial subscription, 24 hours before the end of the current period. You can manage or change your subscription at any time, including turning off auto-renewal, by going to the ‘Account Settings’ on your device after the purchase.
Note: Clue should not be used as a contraceptive. Clue is made to help people understand their menstrual and reproductive health by tracking their data, as well as predicting fertile days to aid conception. The app does not substitute professional medical advice, diagnosis, or treatment. Your healthcare provider can give you advice on your specific needs and situation.
Helloclue.com
support.helloclue.com
Terms of Service: www.helloclue.com/terms
Privacy Policy: www.helloclue.com/privacy
Whether you’re tracking your period, trying to conceive, navigating perimenopause or simply getting to know your body better, Clue’s got you covered.
Backed by science and headquartered in Berlin, your data with Clue is protected by some of the strictest data privacy laws in the world (GDPR).
New: Connect your wearable with Clue. Combine Clue Plus insights with your temperature trends, sleep, and heart rate biometrics to better understand your fertility and health.
PERIOD & MENSTRUAL CYCLE TRACKING
• Know when to expect your period and plan ahead with advanced, personalized predictions
• Discover your body’s unique patterns by tracking 100+ experiences connected to your cycle like feelings, PMS, cravings, pain, sex drive, and much more
• Review an analysis of your past periods and cycles, including average cycle length, period length, period flow, and cycle variation
• Log your birth control method, including pills, IUD, ring, patch, and more
• Set up calendar reminders for your period
• Sync your period data with Apple Health
• Get answers to your health questions with science-based content that breaks down complicated topics like fertility, STIs, and the science of sex into easy-to-understand articles
FERTILITY & OVULATION CALCULATOR
Clue’s clinically-tested technology takes the mystery out of getting pregnant and can easily tell you your most fertile days.
• Get personalized ovulation and fertility predictions for the best time to try or do home insemination
• Access tips and advice from fertility experts to help you understand the science behind getting pregnant
PREGNANCY TRACKING
• Follow the growth of your baby with weekly updates on size, weight, and development
• Track your body's changes during pregnancy, like increased smell and taste, pregnancy glow, sleep quality, the supplements you take, and more
• Receive weekly tips and support from OB-GYNs and Nurse Midwives
PERIMENOPAUSE
• Track hot flashes, sleep changes, your mood, and more
• Stay on top of your changing cycle
• Learn how your body is changing with expert-led articles
Get the most out of Clue, plus access to all four tracking modes (like Clue Conceive and Clue Pregnancy), with a Clue Plus subscription!
A few legal details:
After you choose the Clue subscription that’s right for you & confirm your purchase, the credit card associated with your iTunes Account will be charged. Once purchased, your subscription will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. If you currently have a free trial, any unused time will be forfeited when you purchase a subscription.
If you want to renew your subscription, your account will be charged the same amount you paid for your initial subscription, 24 hours before the end of the current period. You can manage or change your subscription at any time, including turning off auto-renewal, by going to the ‘Account Settings’ on your device after the purchase.
Note: Clue should not be used as a contraceptive. Clue is made to help people understand their menstrual and reproductive health by tracking their data, as well as predicting fertile days to aid conception. The app does not substitute professional medical advice, diagnosis, or treatment. Your healthcare provider can give you advice on your specific needs and situation.
Helloclue.com
support.helloclue.com
Terms of Service: www.helloclue.com/terms
Privacy Policy: www.helloclue.com/privacy
🆕 What's New · v273.0
We update the Clue app every week with bug fixes, performance improvements, and new features to make your cycle tracking more accurate and comprehensive.
If you have questions or feedback for the team, browse our FAQs or contact us anytime through the contact form in the Support Section of the app (More Menu, Support).
Enjoying the Clue app? Feel free to leave us an App Store rating and review.
If you have questions or feedback for the team, browse our FAQs or contact us anytime through the contact form in the Support Section of the app (More Menu, Support).
Enjoying the Clue app? Feel free to leave us an App Store rating and review.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Clue Perioden Kalender
- Developer
- BioWink GmbH
- Bundle ID
- com.helloclue.clue
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 12+
- Languages
- AR, DA, NL, EN, FR, DE, HI, ID, IT, JA, MS, NB, PL, PT, RO, RU, ZH, ES, SV, TH, ZH, TR, VI
Company
- Website
- Not found
- Tagline
- Essential cookies
- Description
- Track your menstrual cycle with the Clue app, a women-led period and cycle tracker. Get science-based insights, predictions, and personalized tracking.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- OG image
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- $1.0M ($800.0K – $1.0M)AI medium
- AI annual estimate
- $12.0M/yr
- ML model estimate / mo
- $2.9K/mo
- Top-grossing rank
- 🇩🇪#23 /100 🇧🇷#27 /100 🇫🇷#33 /100 🇦🇺#33 /100 🇬🇧#43 /100 🇨🇦#47 /100 🇺🇸#48 /100
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- http://www.twitter.com/clue
- http://www.linkedin.com/shareArticle?url=https%3A%2F%2Fhelloclue.com%2Farticles%2Fabout-clue%2Fclue-data-to-help-close-the-diagnosis-gap%3Futm_campaign%3Dsocial-share&title=Clue+data+to+help+close+the+diagnosis+gap
- 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
- https://helloclue.com/articles/how-to-use-clue/clue-period-tracking-plus-explained
- Press / News
- Not found
Contacts & Socials
✨AI Revenue EstimateCONFIDENCE: MEDIUM
The iOS app "Clue Perioden Kalender" by BioWink GmbH is estimated to generate between $800,000 and $1,000,000 in monthly revenue. This leads to an estimated annual revenue of $12,000,000.
Sources mentioned: Sensor Tower, Adapty, Prospeo, Tracxn, Business Model Canvas Templates, Owler, Forbes
⭐Recent App Store Reviews49 latest · avg 2.9★ · 26.5% 5★ · 32.7% 1★
5★13 (27%)
4★9 (18%)
3★3 (6%)
2★8 (16%)
1★16 (33%)
+0 ratings/week
Praise: love ×8 great ×7 best ×3 recommend ×3 amazing ×1Complaints: subscription ×6 hate ×2 expensive ×1 scam ×1
Top positive
★★★★★ Why you should get clue
I love this app and would absolutely 100% say you should buy it every month it gets my prediction only a day off mostly! 😊…
★★★★★ Good so far, but is this app free for the basics?
I just want to track my period in the most basic form. Will it remain free? Or is it just a free trial? Otherwise seems good and simple enough.…
Top negative
★☆☆☆☆ Not what it used to be
I've used this app since I got my first period (so a long time) and in the beginning it was a great app and did what I needed it to do. But sometime in the past few years they started adding ads and locking certain features that didn…
★☆☆☆☆ Too many notifications
This app sends way too many notifications. Total overkill.…
📈Ratings growth394,120 ratings+30% lifetimeShow 3-year history estimate ▾
Tracked (34 weeks) Pre-tracking estimate (34 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic Distribution●Top 10●Top 30●Top 60
🌍Top Countries — Grossing Rank8 countries
🇩🇪DE#23 /100
🇧🇷BR#27 /100
🇫🇷FR#33 /100
🇦🇺AU#33 /100
🇬🇧GB#43 /100
🇨🇦CA#47 /100
🇺🇸US#48 /100
🇮🇳IN#84 /100
📊Category Rank Trajectory#23 now · best #23 · worst #100
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
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.
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