Stardust

A privacy-first period tracker: cycle predictions, moon phases and sharing with friends or a partner.

Quick facts

Free version
Doesn't sell your data
Some data used for ads
Delete your account in the app

From Stardust's own pages, checked Nov 11, 2026. See the sources

What is Stardust?

Stardust is a period tracker with a little cosmic sparkle 🌙✨ Log your period, symptoms, moods, cravings, activities and other body signals, and get cycle predictions and daily insights for the phase you're in. It covers fertility and ovulation tracking, a trying-to-conceive setting and a pregnancy mode too. Your cycle is shown alongside the lunar phases, and the paid tier adds horoscope and tarot content. Connect Apple Health and Oura to see how your sleep, energy and activity relate to your cycle, and share your cycle with friends or with a partner through Partner Mode. It's free to start, with a paid subscription called Stardust Super, from Stardust App LLC on iOS and Android.

Screenshots

Screenshots from the App Store.

Who Stardust is for

Anyone with a cycle, regardless of gender identity, as Stardust's FAQ puts it.

Trying to conceive apps Pregnancy apps

What Stardust does

Period and cycle tracking with predictions
Log symptoms, moods, cravings and basal body temperature
Fertility and ovulation tracking, with a trying-to-conceive setting
Pregnancy mode with daily forecasts and a week-at-a-glance view
Your cycle shown alongside lunar phases
Horoscope and tarot content on Stardust Super
Share your cycle with friends, or with a partner in Partner Mode
Connects to Apple Health and Oura Ring data

Stardust pricing

Prices change and differ by country. Each line shows where and when we read it.

Free version

There is a free version.

Official FAQ. The paid subscription is called Stardust Super.

“Absolutely—we believe everyone deserves access to high-quality cycle tracking. That’s why our free version isn’t an afterthought—it’s thoughtfully built to be robust, insightful, and genuinely useful.”

Source: stardust.app · checked Nov 11, 2026

See all: Free period trackers (10)

Paid plan

$6.99/month, or $24.99 to $39.99/year

Stardust Super, US App Store In-App Purchases. Several annual prices are listed.

“Monthly Plan $6.99 Annual Plan with 1 month trial $29.99 All Access $4.99 Annual plan with 7-days trial $24.99 All Access $24.99 Monthly Plan $6.99 Annual Plan with 7-days trial $39.99”

Source: apps.apple.com · checked Nov 11, 2026

Stardust privacy: what the company says about your data

Taken from Stardust's own published pages, with the exact passage each line rests on. This is a summary of what the company states, not an audit of what it does.

Selling personal data

Says it does not sell personal data.

“We do not sell data. Never have, never will. Our business is built on subscriptions, not your personal information.”

Source: stardust.app · checked Nov 11, 2026

See all: Period trackers that say they don't sell data (8)

Advertising

Says some data is used or shared for advertising.

With consent via device settings. The policy also says Health Data is not used or disclosed to serve digital advertising.

“we will share your Internet Activity Information with AppsFlyer and its integrated partners and Firebase to promote our Services and find new users, including by serving ads about our Services that you may be interested in”

Source: stardust.app · checked Nov 11, 2026

Where your data is kept

Your data is stored on the company's servers.

Policy says health data is stored against a random account ID, separately from contact information.

“For example, companies that host our servers or provide customer support may need access to health data to provide those functions.”

Source: stardust.app · checked Nov 11, 2026

Deleting your data

You can delete your data or account from inside the app.

“Users can delete their information through their app settings.”

Source: stardust.app · checked Nov 11, 2026

Company based in

United States

Stardust App LLC. Terms give a New York, NY mailing address and are governed by New York law.

“by certified mail addressed to "190 Riverside drive New York, NY 10024"”

Source: stardust.app · checked Nov 11, 2026

See how every listed app answers these questions in our app privacy data, or put Stardust side by side with another app in the app privacy checker.

Compiled from public sources

HerFound added this listing from public information. Facts aren't founder-confirmed yet. We don't publish ratings of our own; a star rating shown here is Apple's, linked to the App Store. Spotted something wrong? Tell us and we'll fix it. How HerFound compiles listings.

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Stardust: common questions

There is a free version. The paid plan is listed at $6.99/month, or $24.99 to $39.99/year (Stardust Super, US App Store In-App Purchases. Several annual prices are listed). Source: stardust.app, checked Nov 11, 2026.

Stardust says it does not sell personal data. On advertising, it says some data is used or shared for advertising. Source: stardust.app, checked Nov 11, 2026.

Your data is stored on the company's servers. Source: stardust.app, checked Nov 11, 2026.

You can delete your data or account from inside the app. Source: stardust.app, checked Nov 11, 2026.

Stardust is available on iOS and Android.