The weight-trend chart in MacroDiet is built to show the direction your body weight is moving without the day-to-day noise of the scale. The page is live; the smoothing that turns raw entries into a trend line is coming, so today the line joins your actual weigh-ins. Here is what each part of the page shows and how the derived numbers are computed. MacroDiet is live at macrodiet.fit and evolving; screens change as features ship, and anything marked "coming" below is not in the app yet.
What it does
Open Dashboard → the Weight Trend card. The page shows Average (the mean of your logged weights in the loaded window) and Difference (last entry minus first), the current week's date range, and a chart with ringed dots for each scale entry and a purple line labelled Trend Weight. Under it: time-range pills (1W, 1M, 3M, 6M, 1Y, All), a legend, a six-card tutorial ("What is Weight Trend?" to "Maintaining Peace of Mind"), three Insights & Data cards, a Data Sources row that opens the Scale Weight page, and a month history listing each entry with its change from the previous one.
Step by step
- Log weights first. The chart needs at least two entries to draw a line; add them on the Scale Weight page (how).
- Read the dots, not the line, for now. Each dot is a morning; the purple line currently connects them in order.
- Check the three cards. *Current Weight Trend* repeats the latest value. *Estimated Caloric Deficit* is your expenditure estimate minus your average logged calories over the last 21 days. *30-Day Projection* is where a straight line through your first and last entry lands in 30 days.
- Use the history for the day-to-day story. Each row shows the entry and its change from the previous entry in kg, coloured down or up.
- Come back weekly rather than daily if the readings bother you — the tutorial's own advice, and the reason a trend exists.
What the numbers mean
Why the scale is noisy. Body water alone can move a reading by a kilogram overnight; gut contents, a salty meal or a hard training day add more. None of that is fat or muscle. A trend line is a way of averaging the noise away while still reacting to a real change.
What smoothing does (coming). The usual method is an exponential moving average: each day's trend value is a blend of today's reading and yesterday's trend, so one odd morning moves the line only a fraction of its distance. MacroDiet's exact smoothing parameters are not published yet, so this table uses a simple illustrative blend of one part today's reading to nine parts yesterday's trend — synthetic numbers, to show the shape:
| Day | Scale reading (kg) | Illustrative trend (kg) | What happened |
|---|---|---|---|
| Mon | 85.0 | 85.00 | starting point |
| Tue | 85.9 | 85.09 | a heavy morning moves the trend 0.09, not 0.9 |
| Wed | 84.6 | 85.04 | a light morning barely undoes it |
| Thu | 84.8 | 85.02 | — |
| Fri | 84.7 | 84.99 | the trend now drifts down with the readings |
The two live derived numbers. With an expenditure of 2,837 kcal and an average of 2,400 kcal logged over the last 21 days, the deficit card shows 437 kcal. If the first logged weight was 85.0 on day 1 and the latest is 84.3 on day 14, the daily change is −0.7 / 13 ≈ −0.054 kg and the projection reads 84.3 − 1.6 = 82.7 kg. Both are arithmetic on whatever you logged — a missed week of food logs shrinks the average and inflates the deficit; two noisy end-points swing the projection.
In plain terms: the smoothing is the feature, and it is coming. Until then, read the dots as mornings, read the deficit card as "expenditure minus what I logged", and treat the projection as a ruler laid across two points.
Gotchas
- The purple line is not yet smoothed. It is your entries joined up; a heavy morning shows as a spike.
- The time-range pills do not change the data yet. The page loads the last 30 days of logs whichever pill is selected.
- The deficit card assumes your expenditure estimate is right, and today that estimate is the onboarding formula (expenditure). A 200 kcal error there is a 200 kcal error here.
- The projection uses only the first and last entry, not a fit through all of them. One outlier at either end moves it a lot.
- Average and Difference cover the loaded window only — the entries you have in the last 30 days, not all time.
The short version
The Weight Trend page is the home for the smoothed line that the tutorial describes; the smoothing is coming, and today the chart joins your raw weigh-ins. Two live cards do useful arithmetic — expenditure minus your 21-day average intake, and a straight-line 30-day projection — and both are only as good as the logs behind them. Weigh in under similar conditions, log food consistently, and read the direction rather than the day. These are nutrition and body-weight tracking aids. Educational overview only — not medical advice.