comparisons

Published by Floriva · Updated 2026-05-01 · How Floriva checks its guides

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.

Floriva, Drip, Periodical, and Euki all prioritize offline functionality and local data storage. Drip and Periodical are fully open-source. Euki includes a decoy screen for physical privacy. Floriva offers the most complete feature set while keeping all data local. All four work without internet connectivity.

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 (less readable company-held data), legal privacy (less data a company can produce), 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 keeps core tracking local-first. Cycle logging, symptom notes, predictions, and export tools are designed to work without putting a readable cycle record on company servers.

Floriva is the most complete paid option in this comparison for private cycle logging. It focuses on cycle records, symptom notes, pain patterns, local predictions, and export tools without an ad-supported data model.

The trade-off is cost. Floriva is a paid app with no free tier. The other three apps in this comparison are free. You are paying for cross-platform availability (iOS and Android), a larger development team, a more polished interface, and features that the free options do not include.

Floriva is not open source. You trust the developer's claims about local-only storage without the ability to verify the code yourself.

Drip: Open Source, Sympto-Thermal Focus

Drip is a free, open-source period and fertility tracker for Android. The code is publicly available and auditable. Anyone can verify that the app does what it claims: store data locally with no network transmission.

Drip focuses on sympto-thermal fertility awareness. It tracks BBT, cervical mucus, and other fertility signs using established FAM rules. For users who practice sympto-thermal methods, Drip provides the charting infrastructure without any cloud dependency.

The app includes no telemetry, no analytics, and no tracking of any kind. There is nothing running in the background. The app is the app and nothing else.

The limitations are practical. Drip is Android-only. The development team is small, which means feature updates are infrequent and the interface is functional rather than refined. If you want an open-source, privacy-first fertility tracker on Android and you accept a utilitarian design, Drip delivers.

Periodical: Minimal and Transparent

Periodical takes minimalism to its logical conclusion. It is an open-source period tracker available on F-Droid (Android's alternative app store for free and open-source software). The app requests no special permissions. It stores cycle data locally. It predicts future periods. That is essentially it.

Periodical does not track symptoms in detail. It does not support fertility awareness methods. It does not have a community, AI features, or health content. It tracks your period and shows you a calendar.

For users who want the simplest possible period tracker with zero privacy concerns, Periodical is hard to beat. The code is open, the app is lightweight, and there is nothing to go wrong because there is almost nothing there.

The limitation is obvious: if you need anything beyond basic cycle tracking, Periodical does not offer it. No symptom logging, no fertility tracking, no data export beyond the app's own format.

Euki: Reproductive Health Focus with Physical Privacy

Euki is built by the International Planned Parenthood Federation (IPPF). It combines period tracking with sexual and reproductive health information. The app stores tracking data locally and does not require an account.

Euki's standout feature is its decoy screen. If someone forces you to open the app, whether a partner, parent, or authority, you can show a fake interface that conceals your actual tracking data. This addresses a threat model that purely digital privacy tools miss: physical coercion.

The app is available on both iOS and Android. Core tracking works offline, though some health content features require internet connectivity to load. This partial online dependency is a minor gap in an otherwise privacy-focused design.

Euki's symptom tracking and fertility features are less granular than Floriva or Drip. The app is broader in scope (covering sexual health topics, contraception info, and self-care) but shallower in tracking depth.

The Feature-Privacy-Cost Triangle

These four apps represent different positions on three axes:

Features: Floriva > Drip > Euki > Periodical. Floriva has the most tracking capabilities. Periodical has the fewest.

Verifiable privacy: Drip = Periodical > Euki > Floriva. Open-source apps can be audited. Closed-source apps require trust.

Cost: Drip = Periodical = Euki (free) > Floriva (paid, no free tier). The paid option funds more features and cross-platform support.

Physical Privacy vs Digital Privacy

Most privacy discussions focus on data transmission and storage. Euki's decoy screen addresses a different threat: someone physically looking at your phone. In homes, relationships, or encounters with authority where opening a period tracker itself is dangerous, the decoy screen provides cover.

Floriva, Drip, and Periodical do not offer this feature. If physical privacy threats are part of your reality, Euki's approach addresses something the others do not.

Choosing Your Offline Tracker

If you want the most features with local storage: Floriva. You pay a subscription for a complete tracker that works offline.

If you want open-source verification on Android: Drip for fertility tracking, Periodical for basic cycle tracking. Both are free and fully auditable.

If physical privacy is a concern: Euki. The decoy screen addresses threats beyond digital surveillance.

If you want everything (open source, full features, both platforms, free): That app does not exist yet. Each option requires accepting a trade-off. The question is which trade-off matters least to you.