Clue Period & Cycle Tracker vs Stardust Period Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Clue Period & Cycle Tracker
This app helps women and people with cycles understand their bodies through period tracking, fertility predictions, and health insights. It offers personalized forecasts, tracks over 100 experiences, and provides science-based content. Connect wearables for advanced health analysis.
- Personalized period predictions
- Track 100+ cycle-related experiences
- Fertility and ovulation calculator
- Pregnancy tracking with weekly updates
- Perimenopause symptom tracking
- Connect wearable data
- Science-based health content
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Understand your body. Plan around your cycle. Know what’s coming next. Clue is the #1 women-led period and cycle tracker – science-backed, privacy-first, and built to help you live in sync with your cycle. Trusted by millions of people worldwide, Clue gives you the knowledge and personalized insight to make confident health decisions, from first period to perimenopause. Headquartered in Berlin, your data is protected by strict European privacy law (GDPR). Track your period and cycle Know when your period is coming, and get personalized predictions based on your unique cycle length, flow, and patterns. See how your cycle affects how you feel Track 200+ symptoms and experiences – cramps, PMS, pain, energy, cravings, mood, skin, sleep, sex drive, discharge, and more. Your patterns, in clear charts. Get ahead of symptoms See what might be coming, from PMS and cramps to energy dips, so you can plan ahead. Set custom reminders so nothing catches you off guard. Understand your fertility Get personalized ovulation and fertile window predictions, based on a clinically-validated algorithm designed to help you conceive. Stay on track with birth control Log your method – pill, IUDs, ring, patch, and more. Track your cycle symptoms even without regular bleeding. Get real answers, backed by science Explore 400+ articles on your cycle, fertility, sex, pregnancy, perimenopause, and reproductive health. Use Clue through every life stage Switch between modes as your needs change. Period tracking, trying to conceive, pregnancy, and perimenopause. Connect a wearable Layer your cycle data with temperature, sleep, and heart rate for deeper health insights. Works with Apple Watch, Oura, WHOOP, Withings, Fitbit, and more. Get more from every cycle with Clue Plus — deeper analysis, advanced predictions, and personalized insights that get smarter the more you track. 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
Stardust Period Tracker
This health app helps you understand and track your menstrual cycle, ovulation, and pregnancy. It combines scientific data with ancient wisdom and astronomy to provide personalized insights and goal manifestation tools. Features include period predictions, symptom tracking, and lunar synchronicity.
- Period and ovulation prediction
- Pregnancy tracking with AR
- Daily personalized insights
- Symptom and mood tracking
- Lunar cycle synchronization
- Goal manifestation tools
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Stardust is a free period, ovulation, and pregnancy tracker that helps you understand your period, hormones, and every phase of your menstrual cycle. We blend science, ancient wisdom, astronomy, and AI to make period tracking feel simple, intuitive, and meaningful. Track your period, log symptoms, follow hormonal changes, and watch your cycle unfold day by day. Stardust is the cycle tracker that turns daily period tracking into real self-understanding. PERIOD TRACKER & CYCLE TRACKER Decode your period and every phase of your menstrual cycle with a period tracker built to feel intuitive. - Predict your next period and spot PMS patterns before they start - Get personal daily insights based on your menstrual cycle and hormone patterns - See predictions for your period, PMS, cravings, moods, and fertility - Get enhanced cycle tracking insights using your sleep and activity data OVULATION TRACKER & TRYING TO CONCEIVE On your TTC journey, use Stardust as your ovulation tracker to predict your fertile window and understand your cycle on a deeper level. - Get ovulation forecasts and fertility awareness to plan pregnancy - Connect wearables like Apple Watch and Oura Ring to track your Basal Body Temperature, or log it manually - Follow how your hormones shift across your menstrual cycle, day by day PREGNANCY TRACKER Pregnancy Mode is Stardust's week-by-week pregnancy tracker. Switch it on to follow your full hormonal journey through pregnancy. - See weekly baby growth, with 3D and AR to view your baby's size right in your belly - Get daily affirmations and symptom tracking throughout pregnancy - Read weekly insights on health, exercise, nutrition, and ancient wisdom - Explore hormone and moon-based insights with zodiac sign matchups between you and your baby SYNC YOUR CYCLE WITH THE MOON Stardust goes beyond a standard period tracker to connect your menstrual cycle to the cosmos. - Use tools for cycle syncing and aligning your menstrual cycle with lunar phases - Explore a moon calendar and zodiac insights with symbolism and folklore mapped to your cycle - Pull a daily card and get readings tuned to your moon, sun, and rising sign, and cycle phase TRACK YOUR CYCLE TOGETHER Invite partners or close friends to stay in sync with your period, TTC journey, or pregnancy. WHO STARDUST IS FOR Stardust is for anyone tracking a period, predicting ovulation on a TTC journey, tracking a pregnancy week by week, following their symptoms and hormones, or wanting a closer connection between their cycle and the moon. PRIVACY AT ITS CORE Founded and led by women, Stardust is a period tracker built with privacy at its core. Your cycle data and menstrual cycle history are protected. We never sell or share your personal health information. PRIVACY POLICY & TERMS OF SERVICE https://stardust.app/privacy-policy https://stardust.app/terms-of-use CONNECT WITH US Web – stardust.app Instagram – @stardust TikTok – @stardust.app Note: Stardust should not be used as birth control or contraception. The app does not substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider. Having technical issues or questions about your cycle? Email support@stardust.app.
Screenshots
Verdict
The clearest difference is ads: Clue Period & Cycle Tracker at none against Stardust Period Tracker's shown. Clue Period & Cycle Tracker also leads on ratings volume (404K vs 117K). Stardust Period Tracker's advantage is review sentiment (55% vs 42%) and iOS requirement (15.2 vs 18.0). On price, rating, update cadence and in-app purchases 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
Both are free to download. Clue Period & Cycle Tracker sells 11 in-app purchases, starting at $9.99 per month and Stardust Period Tracker sells 20 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for Clue Period & Cycle Tracker against 4.8 for Stardust Period Tracker. Both are backed by a comparable volume of ratings — 404K and 117K respectively. Written reviews are what separate them: 42% of Clue Period & Cycle Tracker's written reviews are positive against 55% of Stardust Period Tracker's.
Clue Period & Cycle Tracker ships an update weekly, Stardust Period Tracker every 2 weeks. Both last shipped on September 24, 2026.
| Parameter | Clue Period & Cycle Tracker | Stardust Period Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (404K ratings) | 4.8 (117K ratings) |
| Positive reviews | 42.0% of reviews | 55.2% of reviews — better |
| Number of ratings | 404K — better | 117K |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #23 — better | #35 |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 18.0 | 15.2 — better |
| Further details — not scored | ||
| Size | 321 MB | 188 MB |
| Age rating | 12+ | 12+ |
| Developer | BioWink GmbH | Stardust App LLC (New York) |
Customer experience
Clue Period & Cycle Tracker
Stardust Period Tracker
User reviews
Clue Period & Cycle Tracker
From 404K App Store ratingsWhat we love
- 🚀 Accurate predictions
- 📊 Helpful data analysis
- 🗓️ Convenient period tracking
- 🌈 Inclusive and gender-neutral
- 🤖 Customizable tracking options
Room to improve
- 💰 Paywall for key features
- 🔍 Difficult to access personal data
- 🔄 Frequent app updates causing issues
- 🤯 Overwhelming with too many features
- 🔒 Concerns about data privacy and security
Stardust Period Tracker
From 117K App Store ratingsWhat we love
- 💕 Beautiful, aesthetically pleasing design
- 🌙 Syncs with moon cycles
- 🌟 Cute, quirky messages and notifications
- 🤝 Owned and run by women
- 🔒 Protects user privacy and data
Room to improve
- 🐛 Frequent glitches, bugs, and crashes
- 🔁 Resets/deletes user data after updates
- 🕰️ Inaccurate period predictions and cycle tracking
- 🔒 Concerns about data privacy and sharing
- 🤔 Confusing or unintuitive interface
Bugs and requests
Clue Period & Cycle Tracker
Reported bugs
5 issues- Cycle data being lost or inaccessible
- Notifications and reminders not working
- Sync issues between app and account data
- Compatibility problems with older devices
- Crashes and freezes when using the app
Requested features
7 requests- Add notes/journal functionality
- Improve symptom tracking and analysis
- Provide more options for irregular cycles
- Integrate with other health/fitness apps
- Allow customization of tracked categories
Show 2 moreShow fewer
- Implement offline mode for data entry
- Add support for pregnancy and postpartum
Stardust Period Tracker
Reported bugs
5 issues- Logging out and losing all user data
- Inability to update or adjust cycle information
- Calendar and cycle predictions not syncing correctly
- Notifications not working as expected
- Certain features/sections not loading properly
Requested features
6 requests- Add more symptom and mood tracking options
- Implement graph/chart view to visualize cycle data
- Allow custom notes and reminders
- Provide more personalized insights and recommendations
- Improve sync and data backup functionality
Show 1 moreShow fewer
- Offer more inclusive language and features for diverse users
In-app purchases
Clue Period & Cycle Tracker
- 1 Month$9.991 Month
- Clue Period Tracker - 1 Month2 variants$9.991 Month
- Clue Plus by BioWink GmbH$9.991 Month
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- Clue Plus by BioWink GmbH7 Days trial$29.991 Year
- Clue Period Tracker - 1 year1 Year trial$32.991 Year
- Clue Period Tracker - 1 year1 Year trial2 variants$39.991 Year
- 12 Months$39.991 Year
- Clue Period Tracker - 12 Month$39.991 Year
- Clue Period Tracker - 1 year7 Days trial$39.991 Year
- Clue Plus by BioWink GmbH7 Days trial$39.991 Year
- Clue Period Tracker - 1 year7 Days trial$49.991 Year
Stardust Period Tracker
- All Access$2.997 Days
- All Access$3.991 Month
- All Access$4.991 Month
Show 17 moreShow fewer
- Monthly Plan2 variants$6.991 Month
- Monthly plan with 7 day trial7 Days trial$6.991 Month
- All Access$24.991 Year
- Annual plan with 7-days trial7 Days trial$24.991 Year
- $24.99/year with 3-days trial3 Days trial$24.991 Year
- Annual Plan7 Days trial$29.991 Year
- Annual Plan with 1 month trial1 Month trial$29.991 Year
- Annual Plan with 3-days trial3 Days trial$29.991 Year
- Stardust All Access1 Year trial$29.991 Year
- All Access$39.991 Year
- Annual Plan with 7-days trial7 Days trial$39.991 Year
- Stardust All Access1 Year trial$39.991 Year
- Annual Plan with 3-days trial3 Days trial$39.991 Year
- Annual plan with 7-days trial7 Days trial$49.991 Year
- $49.99/year$49.991 Year
- $89.99/year with 7-day trial7 Days trial$89.991 Year
- $89.99/year$89.991 Year
Questions
Is Clue Period & Cycle Tracker free?
Is Stardust Period Tracker free?
Which has better reviews, Clue Period & Cycle Tracker or Stardust Period Tracker?
Do Clue Period & Cycle Tracker or Stardust Period Tracker have ads?
Which is updated more often, Clue Period & Cycle Tracker or Stardust Period Tracker?
Which is more popular, Clue Period & Cycle Tracker or Stardust Period Tracker?
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