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Mensis

Product

Everything you need, and nothing in your way.

See what Mensis does for you in each phase, and below that how logging, predictions and your data work.

Per phase

One app that moves with you

You pick your phase and switch whenever you want. What you log travels with you.

Cycle tracking

In the app

Log your period and how you feel, and see where you are. Mensis looks at your last six cycles and is honest about the margin.

  • Your cycle day, your phase and your prediction, with its margin
  • Nine symptom categories, one tap each
  • A calendar you read by shape as well as colour

Trying to conceive

In the app

Trying for a baby? Mensis puts your fertile window up front, with the same honest margin.

  • Your window, from your history and not from an average
  • Your temperature from Apple Watch (iPhone) or Oura
  • Works together with Apple Health (iPhone)

Fertile days are not contraception. Mensis is not a medical device and never calls a day “safe”.

Contraception

In the app

On the pill, or have an IUD? Then you won't get an ovulation prediction that means nothing to you.

  • Pill: your break week in view instead of an ovulation day
  • Hormonal IUD: the daily insight switches with you
  • Copper IUD: your cycle simply continues

Pregnancy

In the app

Pregnant? Mensis counts along with you: week by week, up to your due date.

  • Week 0 to 40, each with its own image
  • Your partner sees the week if you want them to, never your symptoms
  • After a loss a quiet path of its own: no counter, no baby copy

Postpartum

In the app

The six-week check ends, your recovery doesn't. Mensis stays twelve months, and it is about you.

  • Five short check-ins a day, and logging nothing is fine too
  • One card a day, just for you, with a single practical tip
  • If it stays heavy, Mensis points you to real help
  • My Journey: your timeline, still readable years later

Perimenopause

In the app

Once your cycle turns irregular, a single predicted date is false certainty. You get an honest window.

  • A window on your own spread, not a point date
  • Ovulation and the fertile window are deliberately off here
  • A conversation summary for your doctor, as a pdf

PCOS and endometriosis

In the app

Unsure about your symptoms? Two questionnaires help you start the conversation with your doctor.

  • No score, no likelihood, no diagnosis
  • Your answers next to what you logged yourself
  • Take it along to your appointment, as a pdf

All six phases are in the app. Switch whenever you want; what you log travels with you.

Optional extra

The deen module is off by default

Your status based on what you actually log, a ritual washing reminder, and a counter for the fasting days you owe. You switch it on yourself.

How the deen module works

Logging

One tap per symptom, no save button

Logging shouldn't feel like a chore. One sheet, every tap saves right away, done.

  • Your flow: spotting, light, medium or heavy
  • Nine categories, from mood to appetite
  • A free note field for whatever doesn't fit a chip
The Mensis log sheet: period with four flow levels, mood as chips and energy in three settings, with a note that every tap is saved right away.

Predictions

Predictions with an honest margin

Mensis works with your last six cycles and always tells you how certain the prediction is. All on your own device.

  • The margin is always on screen: ± a number of days
  • With your first cycle that margin is honestly wide
  • On the pill: no ovulation prediction, but your break week
The daily insight in Mensis: the For you today card showing what you logged around this day in earlier cycles, a breathing exercise, and your cycle length, period length and variation side by side.

Calendar and insights

Readable for everyone, colour vision or not

Every phase has its own shape alongside its colour, and a predicted day gets a dotted border. You never have to guess what you're seeing.

  • Month view with day detail
  • Year overview of your cycle lengths
  • Pattern graph from your second cycle onwards

September 2026

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Design

No pink. No flowers. No noise.

Two themes from day one, colours checked against WCAG AA, and every card on your home screen switchable.

  • PeriodFilled
  • FollicularRing segment
  • Fertile windowOpen ring
  • OvulationFilled with outline
  • LutealRing segment

In the calendar

  • PredictionDashed outline
  • TodayThin ring

Every phase has its own shape as well as its own colour; colour alone is not information (WCAG 1.4.1). A predicted day gets a dashed outline.

Notifications

Notifications that behave

At most three kinds, all three switchable separately. And in discreet mode your lock screen only says “You have a reminder”.

  • Mensis only asks permission when it actually matters
  • Reminders on your local time, even when you travel

Your data

Your data, so your call

Take it with you or throw it away: both from inside the app, no email and no waiting period.

  • The export is generated on your device
  • Deleting wipes logs, profile, deen data and conversations
  • Live data gone within 30 days, backups within another 14 days
The privacy screen in Mensis with app lock, discreet mode, sync switched off, and buttons to download your data or delete everything.
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For iPhone and Android