The app’s operator terms are available at AppSurge Terms of Service. This website describes Rythena and does not take subscription payments.
Estimates and education
Period and fertility dates are estimates. Rythena does not diagnose, confirm ovulation or provide contraception. Articles and guides are general product education, without clinical sign-off.
Optional subscriptions
Core tracking remains free. Plus subscriptions renew at the displayed store price until cancelled through the purchasing store. Weekly and annual plans are shown in the app. Purchase management, refunds and mandatory consumer rights follow applicable store rules and law. No trial or discount is promised here.
Availability and artwork
Android is available on Google Play; iPhone and iPad are coming soon. Availability can vary by storefront. Screenshots use synthetic examples and label their platform. Apple, iPhone, iPad and App Store are trademarks of Apple Inc. Android and Google Play are trademarks of Google LLC. This website does not imply Apple or Google endorsement.