A weight tracker that shows the trend, not the noise
Daily weight jumps around by a kilo or more because of water, salt, food in your gut and sleep. Looking at one weigh-in at a time makes it easy to give up on a plan that is working. Fiytt charts your weight over time with a trend line, so you can see the direction you are actually heading.
What Fiytt tracks
Weight with trend lines
Every weigh-in charted over time, with the trend shown clearly.
Body measurements
Track measurements next to your weight to spot body recomposition.
Progress photos
Private photos that show change the scale misses.
Adaptive TDEE
Your energy expenditure estimate adjusts as your weight trend and food logs change.
Nutrition tracking
Calories and macros logged against your personal targets.
How to weigh yourself for useful data
1Weigh in the morning
After the toilet, before eating or drinking.
2Use the same scale
Different scales can disagree by a kilo or more.
3Weigh often
Several weigh-ins a week give the trend line more to work with.
4Judge the trend over 2 to 3 weeks
Not the number from one morning.
How much change to expect
A sustainable fat-loss pace for most people is around 0.5 to 1% of body weight per week. Faster loss is harder to keep up and costs more muscle. Use the free calorie deficit calculator to see how long a goal might take.
Frequently asked questions
Why does my weight change so much day to day?
Water, salt, carbohydrate and food still in your gut can move the scale by a kilo or more overnight. A trend line smooths this out.
How often should I weigh myself?
Several times a week, in the morning, gives a reliable trend. What matters is the direction over two to three weeks.
Can I track measurements too?
Yes. Fiytt tracks body measurements and progress photos alongside your weight.
One app instead of three
Log workouts and meals, bring in your runs, get AI plans and add a certified coach when you want one. Free to start on iPhone, Android and Apple Watch.
Last reviewed October 16, 2026.