Note your last periods
Write down the start dates of your last few periods from Clue's calendar.

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More in the app
Clue is a cycle tracker from Berlin with a perimenopause mode built in. Her Good Days is free and starts from the symptoms of your 40s and 50s. Here's how they compare.
Comparing more apps? See period tracker apps, compared or Clue alternatives.

| At a glance | Clue | Her Good Days |
|---|---|---|
| Price | Free tier; Clue Plus $9.99 a month or $39.99 a year (App Store) | Free. No paid tier; an optional shop sells wellness products |
| What you pay for | Deeper analysis and advanced predictions | Nothing |
| Privacy | Health data never sold to advertisers; won't hand health data to authorities (Clue) | No data sales, no third-party ads; Private mode |
| Perimenopause | A perimenopause mode | Hot flashes by week, sleep next to night sweats, cycle gaps, a doctor report |
| Verdict | Fits if you want strong wearable support and a company with a public subpoena stance | The pick if you want menopause tracking, food and workouts free in one app |
Clue moves its deeper analysis and advanced predictions into Clue Plus, at $9.99 a month or $39.99 a year in the US (App Store). In Her Good Days nothing sits behind a payment.
Clue's perimenopause mode lives inside a cycle tracker. Her Good Days is built the other way round: in perimenopause and menopause the + Log menu leads with hot flashes and brain fog, and the weekly check-in compares your sleep on nights with and without night sweats.

Where Clue doesn't publicly say, the cell says so rather than guessing.
| Clue | Her Good Days | |
|---|---|---|
| Price | Free tier; Clue Plus $9.99 a month or $39.99 a year in the US (App Store) | Free. No paid tier; an optional shop sells wellness products |
| Periods | Yes, with predictions | Period start and flow; your next period shown as a range |
| Fertile days | Fertile window; modes for trying to conceive | Estimated fertile days, labeled "Not birth control"; never in teen mode |
| Birth control | A birth control log | No. It's not birth control |
| Symptoms | A wide symptom list, with Plus for deeper analysis | Hot flashes, night sweats, brain fog, joint pain, cramps and PMS, each mild, moderate or severe |
| Perimenopause and menopause | A perimenopause mode you can switch to | Hot flashes per week and the hours they cluster in, sleep next to night sweats, cycle gaps over 60 days |
| Pregnancy | A pregnancy mode | Week and due date, appointments with your questions, kick counter, contraction timer, a baby card each week |
| Report for your doctor | Not stated in the listing | A PDF for the dates you pick: periods, cycle lengths, each symptom with how often and how strong, sleep, medications, your notes |
| Teens | Rated 13+ | From 13. Teen mode has no shop, no weight-loss goals and no fertile days |
| Use without an account | Not stated in the listing | Private mode: no account, and nothing leaves the phone |
| Ads and tracking | Label: identifiers used to track you. Terms reserve the right to show ads (Clue terms) | No third-party ads and no outside analytics or ad code. Adults see the app's own cards |
| Watch and wearables | Apple Watch, Oura, WHOOP, Withings and Fitbit | Not yet. Steps come in from Apple Health or Health Connect |
| Platforms | iPhone, Android | iPhone and Android |
How we source this. Clue cells come from the US App Store listing, the privacy policy, Your Clue data is always protected and the terms, checked October 30, 2026. Her Good Days cells describe the app as it ships. If anything here is out of date, write to us from the contact page and we'll fix it. Clue is a trademark of its owner; Her Good Days isn't affiliated with it.
US App Store prices on October 30, 2026. Clue says prices vary by region.
Free, every feature
| Every feature | $0 |
| Paid tier | None |
| Trial | Nothing to cancel |
| Optional shop | Wellness products, never based on your logs |
Free tier, then Clue Plus
| Free | Tracking and predictions |
| Clue Plus, monthly | $9.99 |
| Clue Plus, yearly | $39.99 |
Clue's policy says the health data you track is never shared with or sold to advertisers (Clue privacy policy).
If you switch it on in privacy settings, Clue shares app events such as installs and Clue Plus subscriptions with ad networks like Meta and TikTok through Adjust, without your health data (same page).
Clue says it has never disclosed private health data to any authority and won't comply with a subpoena for it (Clue).

| Pick Her Good Days if | Clue fits if |
|---|---|
| You track with a wearable. |
Write down the start dates of your last few periods from Clue's calendar.

Pick your stage, enter your last period, and choose Private mode or an account.


When you're ready, close your Clue account as well as deleting the app.


Clue has a free tier. Clue Plus costs $9.99 a month or $39.99 a year on the US App Store, and adds deeper analysis and advanced predictions.
Yes. You can switch between modes for periods, trying to conceive, pregnancy and perimenopause (App Store).
For menopause symptoms, sleep and a doctor report, yes, and it's free. Clue goes further on wearables and cycle forecasts.
Her Good Days is free, with no third-party ads and nothing to subscribe to. Free on iPhone and Android.