What is a decoy screen

Euki includes a feature that shows a fake screen when the app is opened under duress. If someone forces you to open the app, you can show them a decoy interface that hides your actual tracking data. This protects against physical privacy threats, not just digital ones.

Why are Drip and Periodical Android-only

Both are open-source projects with small development teams. Building and maintaining iOS apps requires Apple Developer Program membership and compliance with App Store policies. Many open-source privacy projects focus on Android because of its more open ecosystem and the availability of alternative app stores like F-Droid.

Is Floriva the only paid option here

Yes. Drip, Periodical, and Euki are all free. Floriva charges $5.99/mo. The subscription funds a larger development team, cross-platform support (iOS and Android), and a more complete feature set. The free options offer genuine privacy with trade-offs in features, platform availability, or polish.

comparisons

Offline Period Trackers Compared: Floriva vs Drip vs Periodical vs Euki (2026)

Which period trackers work without internet? We compare offline capabilities across four privacy-focused apps.

Why Offline Capability Matters An app that requires internet connectivity is an app that transmits data. Even if the transmission is encrypted, even if the company promises not to store it, the data leaves your device. For period tracking in the current legal environment, any data in transit is data at risk. Offline capable period trackers eliminate this vector entirely. No network request means no data interception, no server logs, no metadata about when you opened a health app. The app works on your phone and only on your phone. This matters for three overlapping reasons: digital privacy (no server stores your data), legal privacy (no server can be subpoenaed), and physical autonomy (the app works regardless of connectivity, censorship, or network surveillance). Here are four apps that take offline operation seriously, and how they differ. Floriva: Complete Features, Local Data Floriva runs entirely on your device. Cycle tracking, symptom logging, fertility tracking (BBT, cervical mucus, OPK), predictions, and data export all work without an internet connection. The app never phones home with your health data. Floriva is the most feature complete app in this comparison. It offers