Understand the ScaleLike Never Before.
Track the total physical weight of the food and drinks you consume, compare it with your scale readings, and see the Mass Flow story your scale alone cannot show you.
Today's Mass Flow
Starting Scale
190.6
lb
Mass In
8.00
lb
total food + drink weight
Current Scale
188.4
lb
Mass Out So Far*
10.20 lb
190.6 + 8.00 โ 188.4 = 10.20 lb
๐ Food Between
3.58 lb
45% of Mass In
๐ฅค Liquid Between
4.42 lb
55% of Mass In
You consumed 8.00 lb of physical mass, yet your scale was 2.2 lb lower. See the full timeline to understand why.
You recorded 8.00 lb of physical Mass In, yet the scale was 2.2 lb lower. Mass Flow shows the balance between what came in and what the scale actually did.
Use It Free โFree during beta ยท No credit card required
My Day
6:12 AM
Morning Weigh-In
Start of today's Mass Flow
7:00 AM
Breakfast
Breakfast logged
+1.2 lb Mass In
420 calories
8:30 AM
Water
24 fl oz
+1.6 lb Mass In
0 calories
12:00 PM
Weigh-In
Next scale anchor
Todayโท
History๏ผโ
Trendsโ
Profile
See your Mass Flow for the day.
Your scale only shows your total body mass at one moment. Mass Flow adds the missing context: how much physical mass you recorded coming in, how the scale changed, and the calculated net Mass Out needed to reconcile those readings.
Mass Flow Today
A live balance between your scale readings
Start Weight
190.4 lb
Mass In
+8.77 lb
Current Weight
192.0 lb
Mass Out*
7.17 lb
The calculation
Start
190.4 lb
Mass In
8.77 lb
Current
192.0 lb
Mass Out*
7.17 lb
You recorded 8.77 lb of Mass In, while your scale moved from 190.4 lb to 192.0 lb โ a change of only +1.6 lb. The balance calculation shows 7.17 lb of calculated net Mass Out over the measured period.
Mass In
The physical weight of the food and drinks you record โ separate from calories.
Scale Change
The difference between your starting scale reading and your current scale reading.
Calculated Mass Out
The balance needed to reconcile Start Weight + confirmed Mass In with the current scale reading.
This is why eating 8.77 lb of food and drinks does not mean your scale has to be 8.77 lb higher.
Your body is continuously taking mass in and moving mass out. MyWeightFluctuations makes that balance visible while your consistent morning weigh-ins show whether your longer-term weight trend is moving.
*Mass Out is a calculated net balance, not a direct measurement of metabolism, calorie burn, or any single route of loss. It can reflect recorded inputs, urine, stool, sweat, respiratory losses and normal scale or logging variability.
How It Works
Daily fluctuations explained. Long-term progress kept in view.
Track Your Mass In
Log food and drinks. We estimate physical Mass In alongside calories and macros.
Chicken, rice, broccoli
Mass In: 0.9 lbs
640 calories
(48g P | 62g C | 16g F)
Add Scale Anchors
Weigh when useful to see what happened between one scale reading and the next.
Before meal
186.4 lbs
After meal
187.1 lbs
Scale Change
+0.7 lbs
See Mass Flow + Your Trend
Mass Flow explains today. Consistent morning weights show whether your longer-term trend is moving.
Today's Weight
1.4 lb rangeUnderstand the day without losing sight of the trend.
Mass In
Physical food + drink mass
Scale Anchors
Explain movement between weigh-ins
Mass Flow
See Mass In, scale change + Mass Out
Morning Trend
Separate daily noise from direction
Personal Patterns
Learn what is normal for you
Food tracking without the homework
Just tell AI what you ate or drank.
You don't need to manually calculate calories, macros and physical weight. Describe what you consumed and let the app estimate the rest.
What did you eat or drink?
Describe it naturally.
Tap the button to see an example.
No account needed for this preview.
AI nutrition and mass values are estimates and can vary based on portion size, preparation and product.
Free during beta ยท No credit card
What makes this different
Your scale shows a number.Mass Flow gives it context.
Track the physical mass coming in, compare it with your scale change, and see calculated Mass Out โ while your morning weigh-ins reveal the longer-term direction.
Start Weight
176.2 lb
First scale anchor
Mass In
+2.8 lb
Physical Mass In
Current Weight
177.4 lb
Scale change +1.2 lb
2.8 lb Mass In โ 1.2 lb scale change = 1.6 lb calculated Mass Out*
Mass Out is a balance calculation, not a direct measurement of any one body process. Together, these numbers show the physical mass story behind the scale.
Two views. One story.
Understand today. Follow tomorrow.
Start with a morning weight
Use a consistent morning weigh-in as your daily anchor, then add other weigh-ins whenever you want more context.
Track Mass In through the day
Log food and drinks. AI can estimate calories, macros and the physical mass entering your body.
Let the next morning complete the story
Your next morning weigh-in closes the prior morning-to-morning story while your longer-term morning trend keeps building.
Built for the number that messes with your head
Understand the fluctuation.Protect the long-term perspective.
AI Food & Photo Estimates
Describe what you consumed or use a food photo to estimate physical mass, calories and macros.
Calories & Macros
See estimated calories, protein, carbs and fat accumulate throughout your day.
Physical Mass In
Track the physical mass entering your body โ a different measurement from calories and a key part of your daily Mass Flow.
Mass Flow
Compare Start Weight, confirmed Mass In, Current Weight and calculated Mass Out as the day unfolds.
Morning-to-Morning History
Let each new morning weigh-in complete the previous day's story so you can review what happened between anchors.
Morning Weight Trend
Use consistent morning readings and rolling averages to see direction without letting one noisy weigh-in define progress.
A higher number doesn't automatically mean equivalent fat gain.
Your scale measures total body mass at that moment. Food, drinks, hydration, digestive contents and normal body processes can all influence the number you see.
Scale change: +2.6 lb โ not automatically +2.6 lb of body fat.
Start building your personal scale history.
MyWeightFluctuations is currently in beta. The more consistently you track, the more useful your own history becomes for understanding daily fluctuations and longer-term direction.
Use It Free โNo credit card required
Contact Us
Have a question?
Send us a message and we'll get back to you.
Questions
Frequently asked
What does MyWeightFluctuations track?+
You can track scale readings, food and drinks, physical Mass In, calculated Mass Out, estimated calories and macros, morning-to-morning history, and your morning-weight trend. The goal is to explain short-term scale movement without losing sight of longer-term progress.
Do I have to manually enter calories and macros?+
No. Describe what you ate or drank and the built-in AI can estimate calories, protein, carbs, fat and physical mass for you.
Are the AI nutrition estimates exact?+
No. They are estimates and can vary based on portion size, ingredients, preparation and product. They are designed to provide a useful rough estimate for daily tracking.
Do I need to weigh all of my food?+
No. If you know the physical weight you can use it, but the AI can also estimate physical Mass In when you do not know it.
Does a higher scale reading mean I gained fat?+
Not necessarily. Your scale measures total body mass at that moment. Food, drinks, digestive contents, fluid balance and other normal processes can affect short-term readings, so a scale increase should not automatically be interpreted as an equivalent increase in body fat.
What is Mass Out?+
Mass Out is a balance-derived calculation based on your starting scale reading, confirmed Mass In and current scale reading. It is not a direct measurement of metabolism, fat loss, urine, sweat or any single body process.
Why does the app focus on morning weigh-ins?+
A consistent morning weigh-in gives you a more standardized anchor for following your longer-term weight trend. Additional weigh-ins during the day help explain the fluctuations between those morning anchors.
Is MyWeightFluctuations free?+
Yes. MyWeightFluctuations is currently free during beta and no credit card is required to start.
TODAY'S MASS FLOW. YOUR LONG-TERM TREND.
Understand the number without losing sight of the goal.
See what happened between scale readings today, then use consistent morning weights to see whether your longer-term trend is moving.
Use It Free โFree during beta ยท No credit card required