Health & Fitness

Record allergic reactions: allergen, symptoms, severity and treatment.

Widmark blood alcohol concentration estimate from drinks and weight.

Estimate body fat percentage from neck, waist (and hip) measurements.

Compute BSA via Mosteller, DuBois and Haycock formulas — used for chemo and drug dosing.

Track bowel movements on the Bristol stool scale for gut health.

Project caffeine in your system over time from a list of doses.

Estimate calories burned via the MET (metabolic equivalent) table.

Daily carb target for endurance carb-loading in the days before an event.

Track nightly CPAP usage hours, AHI, pressure and mask leak.

Compute watts per kilogram and categorise via Coggan-style tables.

Suggested daily water intake from body weight and exercise minutes.

Track dental and optometry visits, outcomes and prescriptions.

Estimate functional threshold power from a 20-min, 1-hour, ramp or CP value.

Compute Glasgow Coma Scale, APGAR (newborn) and qSOFA (sepsis screen).

Compute Cockcroft-Gault creatinine clearance and CKD-EPI 2021 eGFR.

Glycemic Load = GI × carb grams / 100. Low/med/high categorisation.

Log headaches with duration, severity, triggers and medication.

Five training zones from your age and (optional) resting heart rate.

Compute training heart-rate zones from age and resting HR using the Karvonen method.

Compute time-domain HRV metrics RMSSD and SDNN from RR intervals.

Devine, Robinson, Miller and Hamwi ideal body weight estimates.

Compute drops per minute and pump rate (mL/h) for IV infusion sets.

Estimate lean body mass and fat mass using the Boer formula.

Build daily streaks for meditation, cold showers, sauna or breathwork.

Estimate 1RM with Epley, Brzycki and Lombardi formulas.

Compute pediatric dose by weight and check against a daily max.

Log cycles and auto-predict ovulation and fertile window.

Compute which plates to load onto a barbell to reach a target weight.

Estimate due date from last menstrual period using Naegele's rule.

Track pregnancy progress: gestational week, trimester and due date.

Estimate a daily protein target from body weight and activity level.

Track max reps or hold time for bodyweight exercises over time.

Log running/cycling/triathlon race results with finish time and placing.

Predict times across distances using Riegel's formula.

Predict a target-distance race time from a known performance using Pete Riegel's formula.

Pace, finish time, splits and km↔mile pace conversion.

Track moles and skin spots over time with the ABCDE melanoma checklist.

When to fall asleep (or wake up) to align with 90-minute sleep cycles.

See the daily-to-decade cost of smoking — and what quitting would save.

Convert a drink's volume and ABV into US/UK/AU standard drink units.

Approximate novice/intermediate/elite 1-rep-max for big lifts by bodyweight.

Compute running speed and pace from stride length and cadence.

Estimate sweat rate from pre/post-exercise body weight and fluids consumed.

BMR / TDEE from Mifflin-St Jeor plus a configurable macro split.

Keep private notes from therapy sessions: mood, topics and homework.

Compute TSS from duration, normalized power and FTP.

Estimate VO₂ max from Cooper or Rockport submaximal tests.

Compute waist-to-hip ratio and the associated WHO health-risk band.

Apparent-temperature calculations: wind chill (cold), heat index (hot), dew point.

Sum sets × reps × weight across a workout to track tonnage week-over-week.