Period Cycle × Barometric Pressure & Weather Self-Care

Prepare gently
for your body's waves.

By linking your menstrual cycle with air pressure and weather, Well Rhythm helps you anticipate headaches and rough days before they arrive. A personalised daily message keeps you gently in step with your own rhythm.

The Android release date has not been decided yet.

Health data encrypted on-device Period logging is optional
Does any of this feel familiar?

That discomfort isn't just in your head.

When you can't quite name the reason, logging and lining things up reveals a pattern that's unmistakably yours.

Pressure-triggered headaches

When rain is on the way, your temples start to pound. Low-pressure days leave you feeling heavy and drained.

Pre-period mood swings

Irritability, sleepiness, skin changes — your mind and body can shift dramatically with your cycle.

Grey skies, low spirits

When overcast days drag on, your mood just can't seem to lift either.

Key Features

Everything to support your rhythm.

Log. Notice. Prepare. Features crafted to gently accompany your everyday self-care.

Today’s note

A gentle line that fits the day’s cycle and weather. Short enough to read without effort.

“Pressure is a little low today. Take it easy, and keep warm.”

7-day wellness forecast

A gentle take on how to approach today and the next 7 days. It starts from general conditions like pressure and weather, and as your records build up, your own patterns gradually shape it too.

Pressure & cycle × how you feel

Pressure, humidity, rain, sleep, water and moon phase — all overlaid with your records and worked out on your device alone. What has been confirmed enough appears as “your patterns”; anything still building shows separately as “what you’ve logged so far”.

These show conditions that tended to coincide with harder days — not causes or causal links.

Logging in a tap

Headache, mood, symptoms, water and medication — just pick and you’re done. No typing needed. Symptoms you log often appear as larger circles, so patterns are easy to spot.

Calendar

Menstrual, follicular, ovulation and luteal phases in soft cherry-blossom tones. Basal body temperature and daily records live in the same calendar.

Widgets and Apple Watch

Check and log today’s forecast, pressure, cycle and water straight from your home screen or Apple Watch — no need to open the app.

E2E encrypted

Partner sharing

Only a brief summary is shared — never your detailed logs — with E2E encryption between devices. The neutral “check in gently” signal lets you send care alone.

Make it yours

Show only the dashboard cards and log fields you actually use, and reorder them freely. Theme, font, text size, contrast and notifications are all adjustable.

Can be turned off

Apple Health / Google Health sync

Sync with Apple Health and Google Health to import basal body temperature and period records automatically. You can turn the connection off anytime, and your data stays only on your device.

* On Android, symptom sync is not available due to platform limitations.

What Well Rhythm cares about most

See what tends to coincide with
your harder days — from your own data.

Not general theory — your own records hold the answer. Well Rhythm overlays pressure, humidity, rain, sleep, water, and moon phase with how you feel, computed entirely on your device. And we openly disclose the thinking behind it.

See how Well Rhythm works →
Privacy Comes First

Your health data stays on your device.
Even we can't read it.

Your health and cycle data is among the most sensitive information you hold. That's why Well Rhythm encrypts it on your device. Our servers never see the contents.

Read the full Privacy Policy → How it works →

Encrypted on-device

Everything you log is encrypted on your phone. It is not designed to be stored wholesale in the cloud.

Servers see only a summary

Partner sharing sends only a 'summary', via E2E encryption between devices. Nothing is readable in transit.

Delete everything, anytime

Your data is yours. One tap wipes it all cleanly.

No tracking, ever

No behavioral tracking, ad trackers, or third-party analytics. We don't follow you around or build a profile of you.

Simple 3-Step Flow

Log. Connect. Prepare.

1

Log it

Tap to record your mood, symptoms, and cycle. Basal temperature and medication can be tracked too.

2

Connect the dots

Not just pressure — humidity, rain, sleep, water, and moon phase, overlaid with your records to surface what tends to coincide with harder days, all on your device. After about a week of data, your patterns start to emerge.

You can also see the "self-check" — hits and misses, nothing hidden.

Pico
3

Prepare with your daily message

Even on tough days, a gentle message helps you get a head start. That little mental prep makes all the difference.

Take a peek inside

Screens you'll actually want to open every day.

Select a screen from the menu to see what each one does and how it helps. The more you log, the more the display grows to reflect your own rhythm.

Screenshots Coming Soon

The actual screens (Home, Calendar, Pressure, Correlation) will be revealed at the official launch. Stay tuned!

Home

Your Daily Message & Conditions

    Home screen
    Frequently Asked Questions

    Answers to your questions.

    QIs it free?
    Yes. Every feature except AI — logging, daily messages, correlation analysis, the calendar, widgets, smartwatch, and partner sharing — is free. Premium (paid) adds AI features and removes ads, and the Family plan can extend Premium to your partner too.
    QIs my health data safe?
    Your health data is encrypted on your device, and our servers cannot read it. Partner sharing uses only a 'summary' sent via E2E encryption between devices. You can delete all data at any time.
    QCan I use it without logging my period?
    Absolutely. Period logging is optional — you can turn it off and still use the app fully. Air pressure tracking, symptom logs, and daily messages all work without any period data.
    QWhat does my partner actually see?
    Only a brief summary — something like "Please be gentle with me today" — not your detailed logs. You choose what's shared and can stop at any time. All communication is E2E encrypted.
    QWhich devices are supported?
    Both iOS and Android are supported. Home screen widgets and Apple Watch / Wear OS are supported too.
    QAre AI features available?
    AI features — such as gently rephrasing the daily message and AI search in your diary — run on your device (offline). iOS is supported today. On Android, we'll roll them out as Google's on-device AI support expands (templates are used until then).
    QCan I connect to health apps?
    On iOS you can sync with Apple Health to import basal temperature and period records. On Android, Health Connect integration is not yet supported (you can log everything in the app, and all other features work as usual). You can turn the connection off anytime.
    QCan I use it for medical diagnosis?
    No. Well Rhythm is a self-care app and is not intended for diagnosis, treatment, or prevention (it is not a medical device). Use predictions and the daily message as a gentle guide, and consult a medical professional if you feel unwell.
    QCan I carry my data over to a new phone?
    Yes. If you create an optional account, you can carry your data across a same-OS device change or an iOS↔Android move (a migration passphrase is used for encryption). Health data isn't linked to your account and stays encrypted on your device.
    Let's get started

    Start caring for your own rhythm today.

    Well Rhythm is here to gently help you prepare for your body's waves, every day.

    The Android release date has not been decided yet.

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