The Best Simple Science Fitness Alternatives in 2026

MyFitnessPal tracks food, calories and macronutrients, with tools for nutrition logging and fitness goals.

SailRabbit provides calculators for basal metabolic rate, total daily energy expenditure and body mass index.

Impakt tracks workouts in real time and offers AI coaching, customized exercise plans and nutrition insights through its fitness app.

Cronometer tracks calories and macro- and micronutrients, using lab-analyzed food data to help users review their diet.

Stronglifts provides strength training programs, exercise guides and a weightlifting app, with a free spreadsheet bundle.

Hybrid Calisthenics offers an app for building strength and fitness at home.

Muscle & Strength provides exercise video guides with instructions, tips and ratings for more than 1,500 exercises.

MOVE Coach provides a 16-week nutrition and exercise program for weight management.

Tracked combines workout logs, nutrition tracking, calorie counts, personal records and coaching tools in a free fitness tracker.

DAREBEE offers more than 2,800 home workouts, exercise programs, monthly challenges and fitness guides.

The Fitness Wiki organizes exercise guidance, diet information and workout routines from the r/Fitness and r/weightroom communities.

AMMFitness offers workout plans, nutrition advice and other resources for health and fitness goals.

Fitness Blender offers full-length at-home workout videos and progressive exercise programs with free, day-pass and subscription access.

The Casual Gym lets visitors choose a muscle group and select a simple workout to train it.

The NHLBI BMI calculator estimates adult body mass index from height and weight and explains its limits as a health measure.

BabyCenter provides pregnancy, child health and parenting information, with calculators, newsletters and community groups.

The APA due date calculator estimates a pregnancy due date and shows baby development milestones and weekly growth.

Strong logs gym workouts and helps users plan strength training routines through its workout tracker.

Lift Vault provides downloadable workout spreadsheets for powerlifting, bodybuilding, strength training and running.

The Codeberg project Energize helps users track nutrition easily and quickly.

Nutritionix currently displays a maintenance message, so the available page does not establish what the nutrition database offers.

NutritionFacts.org shares nutrition research through videos, blog posts and podcasts presented by Dr. Michael Greger.

Workout.cool lets users build workout routines using an exercise database and track their progress.

The supplied wger page shows a bot check, so its visible content does not provide details about the fitness management project.