StepKcal turns your real daily step count into a precise, personalized calorie plan — no more guessing between "lightly active" and "moderately active" on a generic calculator. Using the clinically validated Mifflin-St Jeor equation, StepKcal calculates your BMR, adds calories burned from your actual steps and walking pace, and produces your true Total Daily Energy Expenditure (TDEE). You get a full shareable report: BMI with a healthy-range breakdown, calorie targets for multiple weight-loss paces, a macronutrient split (protein/carbs/fats) for each target, and a week-by-week weight projection toward your goal. Supports metric and US units. What sets it apart: it's activity-data-driven rather than self-reported, and it's a single $1.99 one-time purchase — no subscription, no signup, no recurring fees.