Euki App Alternative: Period Tracking With Cross-Device Sync

Euki stores data on-device with no account, the strongest privacy guarantee available. No cross-device sync, limited platform support. Floriva adds both.

Euki is one of the most private period trackers available, on-device storage, no account required, no data sold. But it has no cross-device sync and limited iOS/Android features. Floriva offers the same privacy architecture with cross-device encrypted sync.

Euki Gets the Architecture Right

Euki is a genuinely private period tracker. It is open source, stores data on your device with optional encrypted sync support, and requires no account. The Women's Reproductive Rights Assistance Project developed it specifically for users who need strong privacy protection. If your only requirement is that your period data never reaches a company server, Euki delivers that.

There is no documented history of data sharing or enforcement action against Euki. The privacy guarantee is architectural: the data lives on your phone, period.

Where the Gap Shows Up

The limitation is not privacy, it is practicality. Euki has no cross-device sync. If you upgrade your phone, switch from Android to iOS, or want to access your cycle data on a tablet, you cannot. Data is stranded on the device where it was entered.

Euki is maintained by a nonprofit, which means development resources are limited and feature updates come less frequently than commercially-maintained apps. The symptom tracking set is narrower than commercial alternatives.

For users who track on a single device and don't anticipate switching platforms, these limitations may be acceptable. For users who want on-device privacy without those constraints, the gap is real.

How Floriva Compares

Floriva and Euki share the same core idea: data starts on your device, and no account is required to start tracking. Floriva adds optional cross-device encrypted sync for users who need it. Only encrypted data moves between devices, and we cannot read it. Floriva also has regular updates and a commercially-maintained feature set. If you've been using Euki and hit the sync wall, Floriva is the closest equivalent that solves it without giving up the privacy model.

Strengths and trade-offs

Euki

Pros

On-device storage with optional encrypted sync support
No account required
Free and open source
Strong privacy architecture

Cons

No cross-device sync
iOS and Android only
Limited feature velocity due to nonprofit resources
No web version

Quick answers to the obvious questions.

Is Euki safe for period tracking?

Euki is one of the safest period trackers available from a data privacy standpoint. It stores all data on-device, requires no account, and is open source. The main practical limitation is no cross-device sync. If you use multiple devices or upgrade your phone, data cannot be synced without a manual export.

What are the alternatives to Euki with cross-device sync?

The main alternatives to Euki that keep on-device privacy while adding cross-device sync are Floriva (which uses end-to-end encrypted sync, so only encrypted data is transmitted) and Periodical (Android). Most other period trackers with cross-device sync store data in the cloud.

Questions people ask before they switch.

Is Euki a good period tracker?

Yes, Euki is one of the most private period trackers available. It stores data on your device with no account required and no data transmitted to servers. The main limitations are no cross-device sync and limited platform support.

Can Euki data be subpoenaed?

No. Euki stores data only on your device. There are no servers to subpoena. If you delete the app or change phones, the data is gone unless you manually export it.

What does Floriva offer that Euki doesn't?

Floriva adds cross-device encrypted sync and a full iOS and Android experience with more regular updates. The privacy architecture is the same: data stored on-device, no account required for basic tracking.