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Euki vs Drip: Two Privacy-First Period Trackers Compared

Last updated: March 21, 2026

TLDR

Euki and Drip are the two most established privacy-focused free period trackers. Both store data on-device and require no account. Drip is open source and Android-only. Euki runs on iOS and Android but lacks cross-device sync. Floriva adds encrypted cross-device sync that neither offers.

Euki vs Drip vs Floriva: Feature and Platform Comparison
FeatureEukiDripFloriva
iOS supportYesNoYes
Android supportYesYesYes
On-device storageYesYesYes
Account requiredNoNoNo
Open sourceNoYesNo
Cross-device syncNoNoYes (E2E encrypted)
Sexual health trackingYesBasicYes
Contraception loggingYesBasicYes
PriceFreeFree$2.99/mo

The two best free privacy-first trackers

When people ask for period trackers that don’t sell data, two free options consistently come up: Euki and Drip. Both store data on-device. Neither requires an account. Neither has ads. The differences come down to platform, features, and development model.

Euki: feature-rich, nonprofit-backed

Euki is developed by the National Institute for Reproductive Health and covers period tracking, sexual health, contraception logging, STI information, and pregnancy tracking. It runs on both iOS and Android.

The feature set is broader than most expect from a free, privacy-focused app. The UI is functional rather than polished — it prioritizes information over aesthetics. Euki’s main limitation is that data lives only on your current device. No sync, no backup to another device, no recovery if you lose your phone (beyond manual export).

Drip: open source, Android-only

Drip’s distinguishing feature is transparency. The codebase is publicly available, which means anyone can verify what the app does with data. For users who want to audit what they install, this is a genuine advantage.

The trade-off is scope: Drip is Android-only and has a minimal feature set. Development activity is lower than commercial apps. If you’re on iOS or want features beyond basic cycle logging, Drip doesn’t cover it.

Where Floriva fits

Both Euki and Drip solve the data-selling problem but leave a gap: if you use multiple devices or upgrade your phone, your data is stranded. Floriva adds opt-in end-to-end encrypted sync that addresses this. Before any data leaves your device, it’s encrypted with a key that Floriva doesn’t hold. The sync is an opt-in feature — you can use Floriva in fully offline mode the same way you’d use Euki.

The cost is $2.99/mo. If free is non-negotiable, Euki (iOS + Android) or Drip (Android) are solid choices with genuine privacy architecture.

Neither feels private enough?

Floriva stores everything on your device. No data sold, no account required.

Verdict

Euki is the stronger pick for iOS users or anyone wanting broader feature coverage. Drip is the better choice for Android users who want an open-source, fully auditable codebase. Both are genuinely private by architecture, not just policy. Neither supports cross-device sync — which Floriva provides via opt-in end-to-end encrypted backup.

PROS & CONS

Euki

Pros

  • Free, no ads, no data selling
  • On-device only — nothing to subpoena
  • Broad feature coverage including sexual health
  • iOS and Android

Cons

  • No cross-device sync
  • Nonprofit-backed with slower update cadence
  • Data lost if phone is lost or reset

PROS & CONS

Drip

Pros

  • Open source — publicly auditable
  • On-device only storage
  • No account required

Cons

  • Android-only
  • Minimal feature set
  • No cross-device sync
  • Less active development

PROS & CONS

Floriva

Pros

  • On-device storage with opt-in encrypted cross-device sync
  • iOS and Android
  • No account required for local use
  • Broader feature set than either free app

Cons

  • $2.99/mo — not free like Euki or Drip
  • Closed source

Is Euki safe for period tracking?

Euki stores all data locally on your device and does not require an account or internet connection to function. It has no ads and no documented data-selling history. Euki is backed by the National Institute for Reproductive Health, a nonprofit. The on-device architecture means there is no company server to subpoena. Euki is considered one of the most privacy-protective free period trackers available.

Is Drip period tracker open source?

Yes. Drip's source code is publicly available on GitHub, which means its data handling and storage practices can be audited by anyone. This transparency is a genuine privacy advantage. The trade-off is that Drip is Android-only and has a minimal feature set compared to more actively developed trackers.

What is the difference between Euki and Floriva?

Both Euki and Floriva store data on-device and require no account. Euki is free and backed by a nonprofit. Floriva is $2.99/mo and adds opt-in end-to-end encrypted cross-device sync, which Euki does not offer. If you use multiple devices or want to recover data after a phone loss, Floriva's sync feature provides that without compromising on-device privacy — your data is encrypted before it leaves your device.

Frequently Asked Questions

Can I use Euki without creating an account?
Yes. Euki requires no account and works entirely on-device. There is no registration process. You open the app and start tracking. All data stays on your phone.
Does Drip work on iPhone?
No. Drip is Android-only. iOS users looking for an open-source or fully private option should consider Euki (free) or Floriva ($2.99/mo) for on-device tracking with iOS support.
What happens to my Euki data if I get a new phone?
Euki data is stored only on your device. If you get a new phone without exporting a backup, your data is lost. Euki does allow manual local backup export, but there is no automatic cloud sync. This is a meaningful limitation compared to cloud-based apps — and the reason Floriva added opt-in encrypted backup as a feature.

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