Euki

Euki

Sexual health info & tracking

116 ratings
84 reviews
Free

Details

  • Released
  • Updated
  • September 2, 2019
  • September 4, 2025

Features

Euki screenshot #1 for iPhone
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Euki screenshot #10 for iPhone
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About

This app offers comprehensive sexual health information and tracking tools with a strong emphasis on user privacy. It allows for customizable health tracking, period predictions, and access to a content library vetted by experts. Additionally, it features a care navigator to find reproductive health services.

Customizable health tracking
Period and cycle predictions
Content library on sexual health
Care Navigator for health services
PIN protection for data
Anonymous data storage
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What users say

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What's New in Euki

1.9.5

September 4, 2025

This update includes design improvements within the Info feature.

User reviews

Best free private menstrual tracker! Just missing one thing for perfection.

I wish there was a way to add more categories of things related to the hormone cycles that I frequently track, such as back pain and sense of smell. But other than that I have no complaints!

Almost Perfect

I love the app’s privacy and information availability on it. However I feel as if it’s missing some symptoms people may experience, such as back pain, and leg cramps, ect. I also wish it sent a notification a week before and a few days before warning me of my period like other apps do. I did submit a suggestion for that on their site but I hadn’t mentioned the back pain one so I decided to make a review.
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Would love if…

Would love the app even more if it were possible to also track the type of pad size/absorbtion being used. A pad with wings is not nor is it the same as an overnight maxi pad with wings, and for me I know that distinction matters. Cause if I need to use x3+ long ultra thin pads with wings one day and x3+ maxi pad overnight wings the next day, and all I can click is “heavy flow” that’s a bit unhelpful, as those are two very different types of heavy flow days.

Would it be possible to be able to log pad type/absorbency? Like after you click it, then get to click which type just like how they have all options on the box with a picture of which product you’re purchasing? And I’m sure tampon users would also appreciate this feature.

That’s all! And also thank you for fixing the cycle glitch, it’s awesome now at predicting again!


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Past Review:
Please for the love of moon cycles everywhere, please fix this bug.

Could you please fix the glitch that doesn’t recalculate cycle length?

The cycle tracker is way off. And even though the last four cycles have begun at the same interval of time, it’s still off by a week due to a fluke cycle that began early. And every cycle before the fluke also began at the same interval of time as the cycles after the fluke. I thought that after a few cycles it would recalculate to accurately reflect what the new data is showing, but it hasn’t and I don’t think it ever will.

I really like this app, but the fact that it’s an entire week off makes it unusable for me. If I can’t track my cycle accurately, then why would I continue to use this app? Please for the love of moon cycles everywhere, please fix this bug. I don’t want to have to find yet another app after fleeing from clue.

Thank you!
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Not impressed

To compare period tracking apps, I’m also using drip. and the iPhones open health tracker, and this one is the most inaccurate, usually even “ possible” days are 1 or 2 days out while the other ones are pretty much spot on.
Another a couple of negatives: no dark mode, even though I’ve submitted the idea to the company, it got harshly shut down! The app is very white and bright, and it’s not pleasant to use when I got the entire phone and all other apps in dark mode, the contrast can be intense. And the interface of the app is so freaking ugly, all those disturbing facial “emojis” and pained illustrations just give it a gross feeling, it’s a really ugly style!! Not a fan, so this one is going…..
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Feels safe and PRIVATE!

This app makes me feel safe- the language, information and privacy features are second to none. Feels like it was made for women, not for data collection.

User experience

🐞

Reported Bugs

13 issues

App crashes when accessing certain features

Bug

Calendar display missing days

Bug

Randomly added contraceptive shot entries to all logged days

Bug

App crashes when editing past bleeding logs

Bug

Cycle length recalculation not updating after new data

Bug

Inability to uncheck accidentally selected items

Bug

Calendar resets to current date when editing past entries

Bug

Icons swapped in recent updates

Bug

Data disappearing without user action

Bug

PIN fake password feature (0000) not functioning

Bug

Finicky tap controls for calendar editing

Bug

App closes when attempting to correct logged data

Bug

Inaccurate cycle predictions despite consistent data

Bug

Requested Features

22 requests

Dark mode support

Feature

Data export/import functionality

Feature

Period and ovulation notifications/reminders

Feature

Additional symptom tracking options (back pain, leg cramps, sleep changes, bowel changes, memory issues)

Feature

Basal body temperature tracking

Feature

Menstrual pad type and absorbency tracking

Feature

Discharge type tracking

Feature

Cycle day numbers displayed on calendar

Feature

Ovulation and luteal phase indicators on calendar

Feature

Medication tracking (not just contraception)

Feature

Custom symptom categories

Feature

Longer notes section (1000+ characters)

Feature

Photo attachment capability for notes

Feature

Data download/export for doctor sharing

Feature

Follicular and luteal phase tracking

Feature

Multiple flow options per day

Feature

Birth control pill late/early tracking options

Feature

Perimenopause and menopause information

Feature

PIN recovery/reset mechanism

Feature

Appointment tracking separate from symptoms

Feature

Cycle summary display on app opening

Feature

Improved calendar interface for data entry

Feature

FAQ

What does Euki do?

Euki is a privacy-first period tracker and sexual health app. It provides customizable health tracking, period predictions, a library of expert-vetted sexual health information, and a care navigator to find reproductive health services. It prioritizes user privacy with local data storage and no third-party tracking.

How does Euki protect my privacy?

Euki is designed with best-in-class privacy features. Your data is stored locally on your device and is not collected or shared. The app does not require an account, email, or phone number to use, and you can set a PIN for added protection. Data can also be scheduled for deletion.

Is Euki free to use?

Yes, Euki is a free, non-profit, open-source project. There are no costs associated with using the app, and it does not feature in-app purchases or advertisements.

What kind of health information can I track with Euki?

You can track a wide range of health aspects, including monthly bleeding, acne, headaches, and cramps. The app also allows you to set appointment and medication reminders, providing a comprehensive overview of your cycle and well-being.

What is the Care Navigator feature?

The Care Navigator is a feature in public beta that allows you to search, filter, and save information on reproductive health care providers. This includes telehealth clinics and abortion support hotlines, helping you find care options that meet your specific needs and preferences.