Stardust
New York app from 2021 that went viral in 2022 on the back of loud privacy promises and an unusual angle: the cycle is displayed next to moon phases with astrological framing. Underneath the decoration sits an ordinary tracker with periods, symptoms, mood, energy and daily prompts, wrapped in streaks that make logging feel like a habit game rather than paperwork.
Reasonable for anyone who enjoys the aesthetic and wants a light picture of the cycle without medical vocabulary. Not built for clinical planning: no temperature interpretation, no contraception claims, thin statistics. Researchers in 2022 found the app passing user phone numbers to a third party service, which the developers then addressed, so the privacy policy is worth reading before the first entry.
Pros
- Simple logging with daily prompts
- Distinctive visual style with moon phases
- Reminders that are easy to keep up with
- Core tracking available free
- Support answers by email
Cons
- Astrology mixed into health content
- No temperature or serious fertility tools
- Privacy claims questioned in 2022
- Extended insights only on the paid plan
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