Comparison

Period Tracker by GP Apps vs Stardust Period Tracker

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

Head to head
About

Period Tracker by GP Apps

Easily track your menstrual cycles, predict future periods, and monitor fertility. Log symptoms, moods, and weight with detailed charts and customizable notes. Includes advanced modes for trying to conceive and pregnancy tracking, with privacy features and data backup.

Highlights
  • Period cycle tracking and prediction
  • Fertility and ovulation tracking
  • Symptom and mood logging
  • Weight and temperature tracking
  • Customizable notes and symptoms
  • Pregnancy mode and countdown
  • Data backup and export
Features
Read full description

Period Tracker, the easiest way to track your health! *Now supports HealthKit, 3DTouch, TouchID, portrait charts, Advanced TTC Mode (the easiest way to get pregnant by following the homepage timeline’s simple prompted instructions!), and Pregnancy Mode with articles and week-by-week images. Period Tracker is SIMPLE and CUTE. * Press a button at the start of your period every month. Period Tracker logs your dates and calculates the average of your past 3 months' menstrual cycles to predict the start date of your next period. * View your current and future period dates, ovulation and fertile days, moods, symptoms, weight, temp, and fertility notes in a simple month-view calendar. * Discreet iPhone icon simply reads "PTracker." Period Tracker is FILLED WITH FEATURES. * Take daily notes of menstrual symptoms including Spotting, Flow, Cramps, Headaches, Backaches, Bloating, Tender Breasts, and Body Aches! * Track your weight, temperature and moods (over 30+ moods to choose from!) * Add custom symptoms and moods * Charts! Beautiful, comprehensive and handy. Charts show weight, temp, symptoms, period length, cycle length, and more. * Backup/Restore your data with your online backup and restore account. (works across platforms) * Homescreen shows your predicted ovulation, eight day "fertile window,” and your cycle day. Great for trying to conceive. * Pregnancy mode activates countdown to baby's due date and week-by-week articles. * Protect your privacy with TOUCH ID or with a passcode option that is fast and easy. * Export your period dates and notes to email for doctor's visits. Period Tracker is loved by millions of users. MommaRed - "I really like this application. It is easy to use, easy to track and plan for upcoming events. The recent updates have made it even better. One of my favorite iPhone apps." Blanczz226 - "This is one of my favorite apps. I use it every month and it's extremely accurate. Worth the $ for sure" GeekSugar.com - "Period Tracker is the ultimate menstrual mentor. You enter in your info, and it tracks your cycles, letting you keep notes about your activities and well being, all the while using twee 'lil hearts .and flowers to denote important days." Celstemc - "One of my first apps and I am completely in love with it! Won't use another one like it!! Cute and easy to use!" Subscription Details By subscribing to the Period Tracker Patron program you receive additional features. Subscription purchased through the app will be charged to your iTunes account. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period at the cost of $9.99. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription. Terms of service: https://gpapps.com/support/eula/ Privacy policy: https://gpapps.com/support/privacy-policy/ Disclaimer: Period Tracker period and fertility forecasts may not be accurate and should not be used to prevent unwanted pregnancy. To forecast ovulation Period Tracker calculates 14 days before the projected start date of one's next period. Forecast accuracy depends on a number of factors including how regular one's cycle length is, when one actually ovulates during the cycle, and how many periods have been logged in the app. Anxiety, stress, diet, nutrition, exercise, environment, medications, age and other factors can also affect one's cycle from month to month. Please email comments and suggestions to supportgpa@gmail.com.

About

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.

Highlights
  • Period and ovulation prediction
  • Pregnancy tracking with AR
  • Daily personalized insights
  • Symptom and mood tracking
  • Lunar cycle synchronization
  • Goal manifestation tools
Features
Read full description

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

Period Tracker by GP Apps4 screens
Stardust Period Tracker4 screens

Verdict

The call

Period Tracker by GP Apps and Stardust Period Tracker both sit at 4.8 stars, but that hides the real split: 91% of Period Tracker by GP Apps's written reviews are positive against 55% of Stardust Period Tracker's. Stardust Period Tracker's advantage is update cadence (every 2 weeks vs every 2 months) and chart position (#40 vs unranked). On price, rating, ratings volume and ads 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. Period Tracker by GP Apps sells 1 in-app purchase, starting at $9.99 per year 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Period Tracker by GP Apps against 4.8 for Stardust Period Tracker. Both are backed by a comparable volume of ratings — 74K and 118K respectively. Written reviews are what separate them: 91% of Period Tracker by GP Apps's written reviews are positive against 55% of Stardust Period Tracker's.

UpkeepUpdate frequency

Period Tracker by GP Apps ships an update every 2 months, Stardust Period Tracker every 2 weeks. Both last shipped on October 18, 2026.

Scorecard3 real differences · 8 level
Period Tracker by GP Apps versus Stardust Period Tracker: the parameters behind the verdict, then further details
ParameterPeriod Tracker by GP AppsStardust Period Tracker
PriceFreeFree
Rating4.8 (74K ratings)4.8 (118K ratings)
Positive reviews91.2% of reviews — better54.8% of reviews
Number of ratings74K118K — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
Best chart rank—#40 — better
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPod
Requires iOS15.0 — better15.2
Further details — not scored
Size64 MB211 MB
Age rating12+12+
DeveloperGP AppsStardust App LLC (New York)

Customer experience

Period Tracker by GP Apps

All ratings74,260 ratings
Positive96.9%
Neutral1.5%
Negative1.6%
Written reviews1,880 reviews
Positive91.2%
Neutral2.7%
Negative6.1%

Stardust Period Tracker

All ratings118,302 ratings
Positive94.6%
Neutral2.2%
Negative3.1%
Written reviews3,718 reviews
Positive54.8%
Neutral15.3%
Negative29.9%

User reviews

Period Tracker by GP Apps

From 74K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Accurate period predictions
  • 💡 Customizable symptom and mood tracking
  • 📆 Helpful for planning around cycle
  • 🤰 Useful for tracking fertility and pregnancy

Room to improve

  • 🐛 Irregular cycles not handled well
  • 🔒 Concerns about data privacy and security
  • 💰 Paywall for some features
  • 🎨 Outdated or unappealing design

Stardust Period Tracker

From 118K App Store ratings

What 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

Period Tracker by GP Apps

Reported bugs

3 issues
  • Period start/end dates not saving correctly
  • Ovulation predictions often inaccurate
  • Crashes or freezes when logging data

Requested features

4 requests
  • Add option to track irregular cycles
  • Improve data backup and sync across devices
  • Provide more customization options for layout and themes
  • Integrate with other health tracking apps

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 more
  • Offer more inclusive language and features for diverse users

In-app purchases

1 purchases

Period Tracker by GP Apps

Subscriptions1
  • Annual Member14 Days trial$9.991 Year
20 purchases

Stardust Period Tracker

Subscriptions20
  • All Access$2.997 Days
  • All Access$3.991 Month
  • All Access$4.991 Month
Show 17 more
  • 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 Period Tracker by GP Apps free?
Period Tracker by GP Apps is free to download, with in-app purchases available.
Is Stardust Period Tracker free?
Stardust Period Tracker is free to download, with in-app purchases available.
Which has better reviews, Period Tracker by GP Apps or Stardust Period Tracker?
Period Tracker by GP Apps and Stardust Period Tracker are both rated 4.8 out of 5 on the App Store, from 74K and 118K ratings respectively.
Do Period Tracker by GP Apps or Stardust Period Tracker have ads?
Both Period Tracker by GP Apps and Stardust Period Tracker show ads.
Which is updated more often, Period Tracker by GP Apps or Stardust Period Tracker?
Period Tracker by GP Apps ships an update every 2 months, and Stardust Period Tracker every 2 weeks. Most recently, Period Tracker by GP Apps was updated on October 18, 2026 and Stardust Period Tracker on October 18, 2026.

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