RhythmHer Get the app
Private by design · no ads, no tracking

Know your rhythm,
keep it yours.

A private, local-first cycle and symptom tracker. Check in in about two minutes, see patterns in your own history, and get plain-language answers from sources you can check.

Get the app See how it works
  • Stored on your device by default
  • Optional end-to-end encrypted sync
  • General education, not diagnosis
Voice check-in
On-device speech-to-text
Face ID lock
Keeps the app private

App preview with sample data

~2 minfor a daily check-in, typed or spoken
0ads, ad networks, or third-party tracking SDKs
Citedanswers that link to public health sources like ACOG and the NHS
No accountneeded for core tracking — sign-in is only for sync and partner sharing
See it in action

A look inside RhythmHer.

Short films from the app — daily check-ins, your own patterns, cited answers, partner sharing, and privacy by default. Tap any clip to play with sound.

Know your rhythm
Private by design
Everything in the app
Share on your terms
Your mood, your rhythm
How it works

A few minutes a day. A clearer picture every cycle.

1

Check in your way

Log your period, flow, symptoms, mood, energy, sleep, and food or drink notes — by tapping, typing, or speaking. Voice is transcribed on your device and you review it before saving.

2

See your patterns

Follow your phase estimate, week view, and cycle calendar, then look back through trends and a timeline built only from what you chose to record.

3

Stay in control

Ask questions and get cited answers, prepare a PDF summary for a care visit, export everything, or delete it all — whenever you want.

Available now

Everything in the app today.

Patterns

See what your own history shows.

Trends and a timeline surface how symptoms, mood, energy, and sleep move across your cycles — so you can spot what repeats and bring specifics to a care conversation.

Cramp intensity across three cycles · sample data
Daily check-in

Two minutes, your words.

Quick taps for flow, symptoms, mood, energy, and sleep, plus notes for food, drink, and anything else worth remembering.

Ask questions

Plain-language answers, with sources.

The built-in Q&A covers periods, PMS, the fertile window, and more. Answers run on your device, link to where they come from, and point you to care when a question mentions urgent warning signs.

  • ACOG
  • Mayo Clinic
  • Office on Women's Health
  • NHS
  • Cleveland Clinic
Share on your terms

Let a partner in — only as far as you choose.

Pair with the separate RhythmHer Partner app and send a summary you approve — cycle phase, mood, cravings, or what helps you feel supported, with gentle tips for them. Your raw entries are never shared, and you can disconnect at any time.

Meet RhythmHer Partner →
Your records

Ready for your next appointment.

Create a PDF summary for a clinician, export your full history, and set local reminders so check-ins become a habit.

Companion app
RhythmHer Partner

Help the people close to you understand — without handing over your diary.

RhythmHer Partner is a separate app for a partner or someone you trust. It shows only the summary you approve, so they can check in and offer support at the right time.

  1. Pair with a QR codeTurn on partner sharing in RhythmHer and let your partner scan your code in the Partner app.
  2. Choose what to sharePick the categories — like cycle phase, mood, energy, symptoms, cravings, or what helps you feel supported — and share manually or automatically.
  3. They get a gentle updateYour partner is notified when you share, and sees a short summary in plain language — plus gentle, phase-based tips on how to support you that day.
  • Raw entries and notes are never shared
  • Disconnect or reset the pairing anytime
  • A log shows which categories were shared, never the values
Privacy

Your cycle data starts — and stays — on your device.

Core tracking works without an account. Data only leaves your phone when you choose a connected feature like encrypted sync or partner sharing.

See how the encryption works → Read the privacy policy →
  • Local-first storageEntries are written to your device first. No ads, no ad networks, no cross-app tracking.
  • End-to-end encrypted syncOptional backup across your own devices, encrypted on your phone so only you can read it.
  • Face ID lockKeep the app private on a shared phone. Biometrics are handled by iOS.
  • Delete everythingRemove local data or your account and synced records from inside the app.
Coming later

What we're exploring next.

These are ideas in exploration, not features in the app today. No dates are promised, and we'll only move them up once they're built and verified.

Coming later

Apple Health & wearables

Optional connections to bring sleep and recovery context from Apple Health and selected wearables into your view.

Coming later

Movement guidance

Evidence-aware ideas for activity across your cycle — informational, never a diagnosis or prescription.

Coming later

Android app

RhythmHer is launching on iPhone first. An Android version is planned after that.

Coming later

Web access

A secure browser view for your account. The website does not offer sign-in today.

Planned pricing

One subscription, Partner included.

RhythmHer and RhythmHer Partner are in final testing and not yet available to buy. When they launch on the App Store, one subscription covers both apps. See prices for your region.

Monthly
$4.99/ month
US price
  • Every feature available today
  • Optional encrypted sync
  • No ads, ever
Yearly · save 33%
$39.99/ year
about $3.33 a month, US price
  • Everything in monthly
  • RhythmHer Partner included
  • Billed once a year

Planned prices, not yet an offer. Local prices vary by App Store region — see the full list. Billed and cancelled through your Apple Account.

Coming soon to iPhone.

RhythmHer and RhythmHer Partner are in final testing. Want to hear when it launches? Send us a note and we'll let you know.

Notify me at launch Android — coming later