Body composition, bioimpedance and menstrual cycle

Bioimpedance measures your body composition (weight, fat, muscle mass, water and more). You can upload the report from a smart scale or a device such as InBody, or enter the values yourself.

Upload a body composition report

1. 1On the Body tab, tap "+ Body comp".
2. 2Send a PDF, an image or a CSV of the report or the scale export.
3. 3Tap "Process with AI". If the report includes history (several dates), the AI extracts all of them.
4. 4The measurements appear on the Body tab, from the most recent to the oldest.

The fields extracted include weight, muscle mass, body fat percentage, visceral fat, fat-free mass (when the device prints it, as InBody does), bone mass, body water, protein, BMI, basal metabolic rate (BMR), SMI, WHR (waist-to-hip ratio) and body age. When the report only has weight and body fat, the other fields stay empty. Masses are shown in pounds and the waist in inches, or in kilograms and centimeters if you use metric.

Add a measurement yourself

1. 1Open the Body tab and tap "Edit".
2. 2Add a new measurement, or pick an existing date to change it.
3. 3Fill in the numbers (weight, muscle mass, body fat %, BMI and so on) and save.

Where each measurement came from

At the top of the Body tab you see the date and source of the measurement: Samsung Health, Health Connect, Apple Health, "Photo or PDF" (when you uploaded the report and the AI read it) or "Typed by you". Knowing the source is what lets you compare two measurements without mixing a clinic scale with a watch reading.

Choose which measurement counts

The arrows next to the date move between measurements. If you use a watch that syncs by itself, a partial reading (just weight and body fat, for example) can arrive after a full bioimpedance from a clinic and become the most recent one - and it comes back even if you delete it. To fix that, open the good measurement and tap "Use this measurement for insights and BMR": from then on, it's the one that feeds the insights, the basal metabolic rate, the score and the cards. The full history stays in the charts. Until you choose, the most recent one counts.

The cycle tracker is the Cycle card on Home. You mark on the calendar the day each cycle started - that's all. Biomapa works out the rest: which day of your cycle you're on, the average length of your recent cycles, the predicted next start and the estimated fertile window.

How it's calculated

1. 1The average uses your last 6 completed cycles. A cycle only counts if it lasted between 15 and 60 days: shorter usually means a re-marked date or isolated bleeding, longer means a cycle that went unlogged - both are left out so they don't throw off the prediction.
2. 2With a single date marked, the prediction uses the 28-day default and says so on screen. From the second completed cycle on, it uses your own average.
3. 3The estimated fertile window runs from 5 days before ovulation to the day of ovulation, counting ovulation as 14 days before the predicted next start. It's an estimate based on the average - not a birth control method and not a diagnosis.

The two reminders

There are two independent reminders, which you turn on or off separately on the card: the countdown to the next start (3 days before, 2 days before, the day before and the day itself) and the fertile window (on the first and last day of the window). Every fertile window reminder repeats that it's an estimate.

Your cycle data is included in your data export, like everything else.