Comparison

Euki vs Attune

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Euki

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.

Highlights
  • Customizable health tracking
  • Period and cycle predictions
  • Content library on sexual health
  • Care Navigator for health services
  • PIN protection for data
  • Anonymous data storage
Features
Read full description

Euki is the privacy first period tracker - plus so much more. Euki empowers you to take control of your health data and decisions with customizable health tools and learning resources- all with best in class privacy features. You can give feedback on the App via our anonymous, encrypted survey https://bit.ly/Euki-UX-Survey. And- if you love Euki - please help us by leaving a review in the App Store. Euki is a non-profit, open source project: co-designed by leading reproductive health researchers, privacy experts, and users like you! Learn more or donate to support our work via our website www.eukiapp.org. *Privacy. Period. No Data Collection Your data is stored locally (on your device) and nowhere else. Data Deletion You can delete data on the spot or schedule sweeps to remove sensitive information from your phone. No Third-Party Tracking When you use Euki, the only person collecting your data or tracking your activity is YOU. Anonymity You don’t need an account, email, or phone number to use Euki. PIN Protection You can set a customizable PIN passcode to protect your Euki data. *Track: Take control of your health Customizable Tracking Track everything from monthly bleeding to acne, headaches, and cramps. You can also set appointment and medication reminders. Period Predictions Know what to expect, when! The more you track, the more accurate the predictions will be. Cycle Summary Get a full picture of your cycle, from the average length of your cycle to the duration of each period, with Euki’s cycle summary. *Learn: Make Empowered Choices About Your Health Content Library Find non-judgmental information about abortion, contraception, sexually transmitted infections, and more—all vetted by health experts Personal Stories Discover real, relatable stories about other people’s sexual health experiences *Search: Find Care Options That Meet Your Needs and Preferences New Feature (Public Beta): Care Navigator Search, filter, and save up-to-date information on reproductive health care providers, from telehealth clinics to abortion support hotlines. Note: Although we have tested for privacy and security, this specific feature is in a ‘Public Beta’. This means we will be incorporating your feedback to improve its design and function. Give input via our encrypted, anonymous survey https://bit.ly/Euki-Care-Nav. Interactive Quizzes Take a quick quiz to decide which forms of contraception or other care might be best for you *Feature Details Abortion and Miscarriage Support Learn about different types of abortion and how to find a clinic you can trust Prepare for a clinic appointment, including what questions to ask a clinician and how to get financial support Set reminders to help you remember an appointment or when to take your pills Browse FAQs for answers and explore trusted resources for more information Read stories from real people who’ve had abortions or miscarriages Connect with organizations that provide free, confidential legal support Contraception Information Decide what matters most to you about contraception—like how often to take it or how to start or stop using it Access more detailed information about the contraception methods that might work for you Learn where and how to access your method of choice Comprehensive Sex Ed Explore easy-to-understand information on sex, gender, and sexuality Learn about consent and where you can turn for support Discover affirming resources that help answer other questions about LGBTQ issues, sex, gender, and health Euki Takes User Input Seriously Share feedback or requests through our anonymous, encrypted User Survey https://bit.ly/Euki-UX-Survey. Learn about or join our User Advisory Team. Reach out on social: IG @eukiapp, TikTok @euki.app Looking for other support? Email us: eukiapp@protonmail.com. Love Euki? Please help us by leaving a review in the App Store.

About

Attune

Features
Read full description

"Why do I feel like this today?" — the answer might already be in your data. How you feel is never one thing. Sleep, the state of your mind, what yesterday was like, the air today. Each is recorded somewhere separate, and only means something once they are put together. Attune lines them up as one flow, and reads today against your own usual. ■ Today, in three numbers Condition, Body Battery, Stress. Whether you have recovered, whether you have room left, whether you are wound tight. Whether today is a day to push or a day to rest. The baseline is your own usual — the same number means different things for different people. ■ Telling a hunch from a fact "I always feel worse on days like this." Is that actually true? Attune looks for the relationship in your own records and tells you how sure it is. It does not assert. It is a tool for checking. And when the evidence is not there, it says so rather than inventing a pattern. ■ Keep the apps you already use Attune does not ask you to switch. Whatever reaches Health is read and used, whichever app or device wrote it. Whether your sleep comes from a watch or a ring, your meals from another app, your weight from a scale — it all lands on the same line. And what you log in Attune is written back to Health. So even if you stop using Attune one day, your data stays with you. What is arriving, what is missing, and what each missing piece would let you learn — you can see all of it from day one. ■ Light enough to keep up Mood is one slide. The rest is taps. A record you cannot keep up is worth nothing, so the work has been cut as far as it goes. No Apple Watch needed — enter your sleep by hand and your Condition appears the same day. Attune is not a medical device and cannot be used for diagnosis or treatment decisions. If you are worried about your health, please see a medical professional.

Screenshots

Euki4 screens
Attune4 screens

Verdict

The call

The clearest difference is update cadence: Attune at every 4 days against Euki's every 3 weeks. Euki's advantage is iOS requirement (13.4 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Euki ships an update every 3 weeks, Attune every 4 days. The most recent releases landed on September 23, 2026 and September 16, 2026 respectively.

Scorecard2 real differences · 8 level
Euki versus Attune: the parameters behind the verdict, then further details
ParameterEukiAttune
PriceFreeFree
Rating4.1 (116 ratings) — better—
Positive reviews70.2% of reviews—
Number of ratings116 — better—
Update frequencyEvery 3 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS13.4 — better26.0
Further details — not scored
Size51 MB11 MB
Age rating12+12+
DeveloperEuki, Inc.Yushun Ohtatsume

Bugs and requests

Euki

Reported bugs

13 issues
  • App crashes when accessing certain features
  • Calendar display missing days
  • Randomly added contraceptive shot entries to all logged days
  • App crashes when editing past bleeding logs
  • Cycle length recalculation not updating after new data
Show 8 more
  • Inability to uncheck accidentally selected items
  • Calendar resets to current date when editing past entries
  • Icons swapped in recent updates
  • Data disappearing without user action
  • PIN fake password feature (0000) not functioning
  • Finicky tap controls for calendar editing
  • App closes when attempting to correct logged data
  • Inaccurate cycle predictions despite consistent data

Requested features

22 requests
  • Dark mode support
  • Data export/import functionality
  • Period and ovulation notifications/reminders
  • Additional symptom tracking options (back pain, leg cramps, sleep changes, bowel changes, memory issues)
  • Basal body temperature tracking
Show 17 more
  • Menstrual pad type and absorbency tracking
  • Discharge type tracking
  • Cycle day numbers displayed on calendar
  • Ovulation and luteal phase indicators on calendar
  • Medication tracking (not just contraception)
  • Custom symptom categories
  • Longer notes section (1000+ characters)
  • Photo attachment capability for notes
  • Data download/export for doctor sharing
  • Follicular and luteal phase tracking
  • Multiple flow options per day
  • Birth control pill late/early tracking options
  • Perimenopause and menopause information
  • PIN recovery/reset mechanism
  • Appointment tracking separate from symptoms
  • Cycle summary display on app opening
  • Improved calendar interface for data entry

Attune

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Euki

No in-app purchases

None

Attune

No in-app purchases

Questions

Is Euki free?
Euki is free to download, with no in-app purchases.
Is Attune free?
Attune is free to download, with no in-app purchases.
Do Euki or Attune have ads?
Neither Euki nor Attune shows ads.
Which is updated more often, Euki or Attune?
Euki ships an update every 3 weeks, and Attune every 4 days. Most recently, Euki was updated on September 23, 2026 and Attune on September 16, 2026.

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