PinkyBloom vs Stardust: Period Privacy After Roe v. Wade

Stardust gained millions of downloads in the wake of the Dobbs decision by marketing itself as a privacy-first period tracker. The messaging resonated with users who were suddenly concerned about their menstrual data being used against them. But Stardust's own actions tell a different story.

In June 2022 — the same month the Dobbs decision was leaked — Vice/Motherboard discovered that Stardust's privacy policy stated it would cooperate with law enforcement requests "whether or not legally required." For a post-Roe privacy app, this was the worst possible policy: voluntary cooperation with police requests for menstrual data. Stardust only changed the wording after Motherboard asked about it.

Then in May 2025, Privacy International's investigation revealed deeper architectural concerns. Stardust doesn't keep data on your device — it sends data to its servers and relies on Rownd, a third-party de-identification service, to strip identifying information. De-identification is a process, not a guarantee. Academic research has demonstrated that menstrual cycle data can be re-identified with relatively few data points, especially when combined with other information.

Stardust also requires a Google account to sign up, immediately linking your menstrual tracking to Google's identity ecosystem. PinkyBloom requires no account. Your cycle log is stored on your phone, not in an account on our servers.

Stardust differentiates itself with astrology-themed cycle insights, blending period tracking with horoscope-style content. While this creates an engaging user experience, the actual health intelligence is relatively basic — standard cycle predictions and symptom tracking without advanced AI capabilities.

PinkyBloom offers a fundamentally different level of intelligence. The AI assistant uses your health data to generate personalized insights, cycle predictions, and mood forecasts. Voice logging lets you describe symptoms naturally and the AI extracts structured health data. The doctor visit report generator creates professional summaries for healthcare appointments.

The difference is substance vs. style. Stardust wraps basic tracking in astrology aesthetics. PinkyBloom delivers genuine AI-powered health intelligence — mood forecasting, multi-symptom analysis, and natural language understanding.

从 Stardust 切换到 PinkyBloom 快速而简单。打开 Stardust 的日历视图，截屏，然后使用 PinkyBloom 的截屏导入功能。OCR 引擎会自动提取您的周期历史。

对于那些专门为了 Roe 之后的隐私而下载 Stardust 的用户，切换到 PinkyBloom 尤其重要。虽然 Stardust 营销隐私，但其架构仍然依赖于云存储和第三方去标识。

导入数据后，请考虑删除您的 Stardust 账户并撤销其对您 Google 账户的访问。鉴于 Stardust 需要 Google 登录，移除该连接可确保您的月经数据不再与您的 Google 身份关联。

Both Stardust and PinkyBloom have free trackers, so the comparison isn't about price. Stardust offers basic period tracking with astrology-themed content. PinkyBloom offers an AI assistant, voice logging, mood forecasts, doctor visit reports (with Plus), encrypted partner sharing, home screen widgets, and a health vault with Face ID.

The feature gap is enormous. PinkyBloom includes capabilities that most paid period trackers don't offer, let alone free ones.

For users who chose Stardust because of its privacy messaging, PinkyBloom needs no account and never sells your data. And you get significantly more features in the process.