Weight trends
See the trend, not the daily noise.
A single weigh-in is a data point. Your progress is the line through many of them. 4.2 uses a time-aware EWMA trend that understands gaps, water weight, and the difference between a bad day and a real change.
Illustrative trend, not your data.
The problem
The scale is honest. It is also noisy.
Weight moves with water, salt, digestion, sleep, training, and the menstrual cycle. A one-day jump is often not fat gain — and a one-day drop is often not fat loss.
- Daily readings can swing by a kilogram or more without a real change.
- Weekly averages help, but they can hide a new trend for days.
- A fixed moving average treats an old reading and a new one as equally important.
- Missing days can distort a simple average.
Recent data matters more.
The trend is an exponentially weighted moving average with a 7-day half-life. Each real weigh-in updates the line; older readings fade rather than disappear.
How it works
Four rules that keep the line honest.
The trend is deliberately conservative. It would rather be late than confidently wrong.
Time-aware, not entry-aware
The weight of a reading depends on how many days have passed, not how many entries you made. Two weigh-ins on one day do not count twice.
No invented data
Missing days stay missing. A 14-day gap restarts the trend instead of drawing a line through weeks you did not measure.
Outliers are softened
A reading more than max(2 kg, 3.5%) away from the trend is softened until three readings in a row agree. One unusual day does not hijack the line.
Projections are estimates
Goal dates use your recent 14-day rate. They update as your pace changes, and the app hides them when the data is too sparse or stale.
Plateaus
A quieter stretch is information, not failure.
When the trend flattens, the app shows a calmer window instead of a red warning. It does not diagnose a plateau, assign a cause, or tell you to change a medication.
- Plateau detection looks at the trend, not a single week of readings.
- Copy names possible factors: water, salt, digestion, cycle, sleep, measurement conditions.
- You can skip or pause weigh-ins without losing the record.
- No “cheat day,” “failure,” or “behind” language.
Pause the numbers. Keep the record.
If numbers are becoming noise, you can hide weight and goal values, pause goal pressure, or turn off streaks and celebrations. Logging stays available when you want it.
Charts & insights
Charts for questions, not decoration.
The app is built around the questions people actually ask: Is this working? How fast? Is this a plateau? What changed around this date?
Raw and trend, together
See the daily readings and the smoothed line in the same frame, so you can tell noise from direction.
Range and comparison
Switch time ranges, compare weeks or months, and inspect a day without losing the wider context.
Insights with limits
Direction, rate, stability, and plateau cards describe your data. They do not pretend to explain your body.
Weight trend questions.
How is this different from a simple moving average?
What happens after a long gap?
Why is my trend not moving despite a big daily change?
Is the goal date guaranteed?
Does the trend replace medical advice?
Keep exploring
Weight trends
Stop letting one day write the story.
Use the trend to see direction, not drama. Free on Android, local-first, no account.
- 1M+ installs since 2013
- Current version 4.2
- No account required
- Free on Android