Period and cycle tracking is among the most sensitive health data you can share digitally. It is not “just dates”—it says a lot about reproductive health, planning, and daily life. So it matters which app you use, where that data is stored, and who can access it.
What happens in the wider market?
Some popular period-tracking apps sync your data to cloud servers, share it with analytics or advertising partners, or include it in datasets that may be re-identifiable. Regulators and the press have covered cases where such data was sold or disclosed through legal processes. Every privacy policy is different, but the pattern is clear: once data leaves your device, you no longer fully control it.
How does Adela handle data?
Adela is deliberately different. The app does not collect your data; that is also reflected on the Apple App Store as “Data Not Collected.” Cycle logs, predictions, and shared calendar information stay only on your device. We do not send personal health data to our servers or third-party analytics—and we cannot sell or profile what we never receive.
In short: With Adela, “secure” means your data stays with you—it does not leak out, and we do not see it.
What you can check
- Read the store’s Privacy nutrition label (Apple’s App Privacy).
- Read the privacy policy: watch for “processed,” “shared with partners,” or “advertising.”
- When possible, prefer apps that work on-device only or offer strong end-to-end protections.
Adela is built for couples and groups who want shared planning without trading away privacy: your data stays on your device, under your control.