Free Tools
Small apps for one job each. Open in your browser, or add to your home screen and use them like any other app.
Hydration / 01Water Intake
A daily water tracker with a goal set from your body weight, one-tap logging and a seven-day history. Saved on your device only.
Open tool
Workout / 02Get Up & Go
Five bodyweight moves, 50 seconds on and 10 off, picked fresh each time from our exercise library, with a video demo for every move.
Open tool
Running / 03Pace Calculator
Enter any two of pace, time and distance to get the third, with per-kilometre or per-mile splits and 5K to marathon predictions.
Open tool
Calm / 04Breathing Coach
Pick a pattern and a number of rounds, then follow the circle. Optional vibration on each phase; a calmer view for reduced motion.
Open tool
Training / 05HR Zones
Uses the Karvonen method with your resting heart rate for more personal zones than a plain percentage of max. Optional measured max HR.
Open tool
Running / 06Run-Walk Calculator
Enter your run and walk intervals and paces to get your blended pace per km and mile, finish time for 5K to marathon, and number of cycles.
Open tool
Running / 07Treadmill Pace
Convert belt speed (km/h or mph) to pace per km and mile, pace to speed, or a goal race time to a treadmill setting, and see what your incline feels like on flat ground.
Open tool
Training / 08Zone 2 Calculator
Get your easy aerobic range from heart-rate reserve (Karvonen), percent of max HR, or the MAF 180 formula, with all five zones and the talk test.
Open tool
Training / 09Fitness Age
Estimate your VO2 max from age, height, weight, resting heart rate and exercise habits, and see the age your fitness matches, based on the HUNT Fitness Study non-exercise model.
Open tool
Recovery / 10Resting Heart Rate
See how your resting pulse compares with US adults of your age and sex, using CDC NHANES reference percentiles, with a built-in 30-second pulse counter.
Open tool
Body / 11BMI Calculator
Get your BMI, WHO category and healthy weight range for your height, plus your waist-to-height ratio, in metric or imperial units.
Open tool
Nutrition / 12TDEE Calculator
Enter your age, height, weight and activity to see your BMR and total daily energy expenditure at every activity level, using the Mifflin-St Jeor equation, in metric or imperial.
Open tool
Nutrition / 13Calorie Calculator
Get a daily calorie target to lose, maintain or gain weight at a pace you choose, plus an estimated date to reach your goal weight, in metric or imperial.
Open tool
Nutrition / 14Macro Calculator
Split your daily calories into grams of protein, carbs and fat, with protein set by body weight, balanced, high-protein and lower-carb presets, and per-meal amounts.
Open tool
Strength / 15One-Rep Max
Estimate your one-rep max from any set with the Epley, Brzycki and Lombardi formulas, and get training weights from 60% to 100% rounded to real plates, in kg or lb.
Open tool