Adaptive calorie targets that follow your real progress

Calorie calculators use population averages and the activity level you select. They can give you a reasonable first target, but they cannot know your exact energy expenditure before real data exists.

Caltra starts with a personalized target and then compares logged intake with your weight trend. Over time, that feedback is more specific to you than repeatedly choosing a new activity multiplier.

The basic signal is straightforward: energy intake is measured from your food log, and longer-term weight movement reflects whether intake has been above or below expenditure. Caltra uses those trends to estimate expenditure and recommend updated calorie and macro targets.

The update happens weekly because day-to-day weight is noisy. Sodium, carbohydrate intake, digestion, training, hydration, and menstrual-cycle changes can all move scale weight without representing an equivalent change in body tissue.

Complete nutrition logs are the most important input. A day that includes breakfast and lunch but misses dinner looks like a very low intake day, which can distort the relationship between intake and weight change.

Frequent weigh-ins can also help the trend filter normal fluctuations. You do not need a lower number every morning. You need enough consistent measurements to see the direction over time.

An algorithm is a planning tool, not medical advice. Large, unexplained weight changes, a history of disordered eating, pregnancy, or a medical condition can require guidance from a qualified clinician or registered dietitian.

For routine fitness goals, weekly adjustment can remove a lot of guesswork. The goal is not to change calories constantly. It is to make small, evidence-based updates when the trend supports them.