Local Cycle vs Euki: Privacy-First Period Trackers Compared

Q: Is Euki a private period tracker?

Yes. Euki, built by the nonprofit Women Help Women, stores data only on your device, requires no account, is free, and includes safety features like a PIN screen that can show a decoy. It also provides sexual and reproductive health information including abortion resources.

Q: How does Local Cycle differ from Euki?

Both are local-only with no accounts. Euki is free and oriented toward safety, information access, and basic tracking. Local Cycle is a paid tracker with an encrypted database and deeper life-stage tools: condition-aware prediction windows, perimenopause mode, pregnancy loss logging, postpartum tracking, encrypted backups, and doctor reports.

Q: Can I use both Euki and Local Cycle?

Yes. Some people use Euki for its information resources and safety design while using Local Cycle as their long-term health record. Both keep data on-device.

Euki and Local Cycle sit on the same side of the privacy debate: no accounts, no servers, data on your device. Euki, built by a nonprofit, leads on safety design and reproductive health information. Local Cycle leads on depth of tracking across life stages. Here is an honest map of the differences.

Quick comparison

Question	Local Cycle	Euki
Account required?	No.	No.
Where data lives	Encrypted local database on-device.	Locally on-device; PIN protection with decoy-screen safety feature.
Built by	Dahlia Enterprises LLC (independent developer).	Women Help Women, a nonprofit organization.
Focus	Deep tracking: irregular cycles, perimenopause, pregnancy, loss, postpartum.	Safety, privacy, and sexual/reproductive health information, plus tracking.
Health information	Articles on privacy and tracking; app focuses on logging.	In-app sexual health and abortion information, designed for restrictive environments.
Backups and reports	Encrypted .lcbackup files and private PDF doctor reports.	Designed for data minimization and deletion-friendly use; check current features.
Price	7-day trial, then $9.99 one-time.	Free.

Where Euki genuinely shines

Euki was designed with people in restrictive or unsafe situations in mind. Its PIN screen can display innocuous decoy content, its data practices are radically minimal, and it pairs tracking with vetted sexual and reproductive health information, including abortion access resources. It is free, built by a nonprofit, and recommended by privacy reviewers for good reason. If safety-by-design and information access are your primary needs, Euki is the right tool.

What Local Cycle adds

Local Cycle trades Euki's information-and-safety focus for tracking depth as a long-term private health record:

Prediction windows for irregular cycles, with condition context for PCOS, perimenopause, endometriosis, thyroid disorders, POI, and elevated prolactin.
Perimenopause mode with symptom logging and an HRT/intervention timeline.
Pregnancy loss logging that preserves history, pauses predictions, and offers optional recovery tracking.
Postpartum mode covering 52 weeks, with vaginal-birth and C-section recovery tracks.
Encrypted backups and doctor reports so the record survives phone changes and is usable at appointments.

How to choose

Choose Euki if you need a free tracker with safety features and reproductive health information, especially in a restrictive environment. Choose Local Cycle if you want a deep, encrypted, long-term health record across cycles, perimenopause, pregnancy, loss, and postpartum. Using both is also reasonable -- neither sends your data anywhere.

Sources and how to verify

Frequently asked questions

Is Euki a private period tracker?

Yes. Euki stores data only on your device, requires no account, is free, and includes safety features like a PIN screen with decoy content.

How does Local Cycle differ from Euki?

Both are local-only. Euki is free and safety/information focused; Local Cycle is paid with an encrypted database and deeper life-stage tracking, backups, and doctor reports.

Can I use both Euki and Local Cycle?

Yes. Both keep data on-device, so using Euki for information and Local Cycle as your health record works fine.