Comparison

Stardust Period Tracker vs Forme Fasting Timer

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

Head to head
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.

About

Forme Fasting Timer

This app helps you manage intermittent fasting and personalized nutrition. It offers AI-powered fasting plans, macro tracking, and meal logging to support weight loss and overall health goals.

Highlights
  • AI-powered fast planning
  • Personalized nutrition planning
  • Macro and calorie tracking
  • Meal scanning and logging
  • Visual progress diary
  • Optimized for women's health
Features
Read full description

Forme Fasting Timer Ready to fast smarter—not harder? Forme is your all-in-one app for intermittent fasting, personalized nutrition planning, and effortless calorie tracking. Whether you're doing OMAD, 16:8, or something in between, Forme helps you take control of your health and lose weight with confidence. Fast plans made for you With Forme, you’ll get a fast tailored to your schedule. Choose your style—16:8, OMAD, or custom—and combine it with balanced nutrition, protein, and low-carb meals for sustainable weight loss. Smarter nutrition tracking Stay on top of your nutrition without the hassle. Snap or scan your food, log your meals, and get instant insights into carbs, protein, and macros. Your interactive diary keeps everything organized so you can actually see your progress. Eat well, feel stronger Every choice adds up. With Forme, you’ll learn how to balance your diet, fuel with the right calorie intake, and improve your overall health. From low-carb to high-protein, Forme helps you build habits that last. Why Forme? • AI-powered fast planning • Deep nutrition tracking • Carb & protein insights • Simple meal scan & macro logging • Tailored to OMAD, low-carb, or flexible diet styles • Optimized for women’s health • Visual diary to track progress • Easy calorie and macro breakdowns Take control of your fast, your nutrition, and your health. With Forme, every meal brings you closer to lasting weight loss and a routine you can trust. SUBSCRIPTION REQUIRED An active subscription is required in order to access all features.Download Forme and start your journey today.

Screenshots

Stardust Period Tracker4 screens
Forme Fasting Timer4 screens

Verdict

The call

The clearest difference is review sentiment: Stardust Period Tracker at 55% against Forme Fasting Timer's 0%. Stardust Period Tracker also leads on ratings volume (118K vs 1) and chart position (#46 vs unranked). Forme Fasting Timer's advantage is rating (5.0 vs 4.8). On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Stardust Period Tracker sells 20 in-app purchases, starting at $2.99 per 7 days and Forme Fasting Timer sells 4 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Forme Fasting Timer holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Stardust Period Tracker has 118K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 55% of Stardust Period Tracker's written reviews are positive against 0% of Forme Fasting Timer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

Scorecard4 real differences · 7 level
Stardust Period Tracker versus Forme Fasting Timer: the parameters behind the verdict, then further details
ParameterStardust Period TrackerForme Fasting Timer
PriceFreeFree
Rating4.8 (118K ratings)5.0 (1 ratings) — better
Positive reviews55.0% of reviews — better0.0% of reviews
Number of ratings118K — better1
Update frequencyEvery 2 weeksEvery 2 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#46 — better—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.215.1 — better
Further details — not scored
Size211 MB119 MB
Age rating12+4+
DeveloperStardust App LLC (New York)Catch Yazılım

Customer experience

Stardust Period Tracker

All ratings118,302 ratings
Positive94.6%
Neutral2.2%
Negative3.1%
Written reviews3,683 reviews
Positive55.0%
Neutral15.1%
Negative29.9%

Forme Fasting Timer

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

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

Forme Fasting Timer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

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
4 purchases

Forme Fasting Timer

Subscriptions4
  • Plus Membership$19.991 Month
  • Plus Membership$39.993 Months
  • Plus Membership1 Year trial$79.991 Year
Show 1 more
  • Plus Membership$79.991 Year

Questions

Is Stardust Period Tracker free?
Stardust Period Tracker is free to download, with in-app purchases available.
Is Forme Fasting Timer free?
Forme Fasting Timer is free to download, with in-app purchases available.
Which has better reviews, Stardust Period Tracker or Forme Fasting Timer?
Forme Fasting Timer is rated higher. Stardust Period Tracker averages 4.8 out of 5 from 118K ratings, while Forme Fasting Timer averages 5.0 from 1 ratings.
Do Stardust Period Tracker or Forme Fasting Timer have ads?
Both Stardust Period Tracker and Forme Fasting Timer show ads.
Which is updated more often, Stardust Period Tracker or Forme Fasting Timer?
Stardust Period Tracker ships an update every 2 weeks, and Forme Fasting Timer every 2 weeks. Most recently, Stardust Period Tracker was updated on October 15, 2026 and Forme Fasting Timer on September 30, 2026.

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