# AsterKit

> A privacy-first period tracker for teens (13+). Cycle data stays on the device. No accounts, no cloud sync, no analytics, no ads. One-time $4.99 purchase with a 7-day free trial, and no subscription.

AsterKit is an iOS and Android app made by a small independent team. The defining promise is privacy: there are no user accounts, no servers storing cycle data, and no third-party tracking or analytics SDKs. Everything a user logs lives only on their own phone. A parent or guardian completes a brief COPPA-compliance step (a numeric math challenge, not a PIN or account) before the trial begins. Premium features unlock with a single $4.99 purchase that never renews.

## Key facts

- Platforms: iOS and Android.
- Audience: teens aged 13 and up.
- Privacy: cycle data never leaves the device; no accounts, no cloud, no analytics, no ads.
- Pricing: one-time $4.99 purchase, no subscription. 7-day free trial.
- Parental setup: a one-time COPPA verification (a short math challenge completed by a parent).
- Support: support@asterkit.app (responses within 24 hours).

## Core pages

- [AsterKit home](https://asterkit.app/): what the app is, how it works, and why privacy is the point.
- [Blog](https://asterkit.app/blog): articles on period tracking for teens, cycle basics, and building privately.
- [Support & FAQ](https://asterkit.app/support): answers about trials, refunds, privacy, and setup.
- [Privacy policy](https://asterkit.app/privacy): exactly what data does and does not leave the device.
- [Terms of service](https://asterkit.app/terms): the one-time purchase and usage terms.
- [Accessibility](https://asterkit.app/accessibility): WCAG 2.1 AA conformance and accessibility features.
- [Regional privacy laws](https://asterkit.app/legal): how AsterKit complies with GDPR, LGPD, POPIA, PDPA, and more.

## Blog

- [Your First Period: What to Expect](https://asterkit.app/blog/your-first-period-what-to-expect): Getting your first period can feel surprising. This guide covers what is happening, what to do right now, what to use, and what comes next.
- [The Four Versions of You](https://asterkit.app/blog/the-four-versions-of-you): Hormones rise and fall across your cycle, changing your mood, energy, focus, and confidence. Here is how to work with them instead of against them.
- [Make It Yours: New Themes and iPad Support](https://asterkit.app/blog/make-it-yours-themes-and-ipad): AsterKit's latest update lets you pick the look that feels right and use the app full-screen on iPad, all with the same private, on-device promise.
- [Your Body Has a Hidden Calendar](https://asterkit.app/blog/your-body-has-a-hidden-calendar): Your period is only one part of a bigger cycle. Learn how your body changes across four phases, and why understanding the pattern helps.
- [Why We Built a Period Tracker for Teens](https://asterkit.app/blog/why-we-built-a-period-tracker-for-teens): AsterKit is a period tracker for teens. No cloud, no accounts, no subscription. Here's the story of why we built it and what makes it different.

## Get the app

- [Download on the App Store](https://apps.apple.com/app/id6772702192)
- [Get it on Google Play](https://play.google.com/store/apps/details?id=com.asterkit.app)