How Kinra works

The engine, in the open: trend weight, learned expenditure, confidence, and adaptation.

How Kinra learns your metabolism

Your calorie target should not be a quiz result frozen on day one. Kinra starts with a standard formula, then runs a small estimator that tracks two hidden numbers, your de-noised weight and your daily burn, and learns the burn from what you log and how your weight trend moves. It changes slowly on purpose, reports how sure it is, and nudges your plan a little each week, with floors and pace caps, never a lurch.

Read the guide

Trend weight vs the scale

The number on the scale moves for a dozen boring reasons that have nothing to do with fat gain or loss: sodium, carbs, hormones, hydration. Kinra smooths your weigh-ins into a slow-moving trend line instead, because that's what more accurately tracks real change, and the research on daily weighing itself is more reassuring than most people expect.

What you actually spend: TDEE explained

Your total daily energy expenditure is made of four moving parts, and no formula can pin it down precisely for you as an individual. The more reliable approach, backed by decades of metabolic research, is to start with a reasonable estimate and then let your own logged intake and weight trend refine it over a few weeks, which is exactly how Kinra's estimator quietly learns your burn in the background, smoothly and a little at a time.

Why Kinra tells you when it isn't sure

Kinra shows you when its confidence is high, medium, or low, and it holds your target steady when the data is thin. That is not hedging for its own sake: the estimator that learns your burn also computes its own statistical uncertainty, so the range you see is a real measure of how much the data has pinned down, not a label picked by hand. Formulas are a starting point, self-reported logs and food databases carry real error, and daily weight is noisy. Trusting the number more only when the data earns it is the honest way to run a plan that holds up over months.

Metabolic adaptation: what changes as you lose

As you lose weight, your body defends its fat stores a little: expenditure drops slightly more than your smaller size alone explains. This is real and well documented, but it's proportional to what you're doing, not a one-way injury, and slower deficits, enough protein, resistance training, and the occasional maintenance break all help. It's also exactly why Kinra keeps re-estimating your energy expenditure instead of trusting one fixed number forever.

Kinra, on your iPhone.

A calm nutrition coach you can text. It learns from your meals and weigh-ins, and keeps your plan fitted to you.