200+ iOS apps curated and reviewed
The best aerobic threshold calculator apps on iPhone average 4.6★ across 200+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
Calculate your Aerobic Threshold heart rate to enhance endurance training. This app uses a heart rate drift test, integrating with Apple HealthKit to simplify the process. It guides you through a one-hour run to determine your optimal training zone.
This clinical calculator and decision support tool offers over 200 medical calculators and tools for diagnosis, treatment, and prognosis. It adapts to your practice and provides detailed references, integrating with PubMed and Read by QxMD.
This app calculates personalized macronutrient targets for fat loss, muscle gain, or weight maintenance. It uses body fat percentage for greater accuracy than traditional BMI-based calculators. Achieve your fitness goals with precise nutrition guidance.
Estimate your daily calorie needs based on your basal metabolic rate. Input your height, weight, age, and gender to calculate your BMR and understand how activity levels affect your caloric intake. Uses the standard Harris Benedict Equation for accurate results.
This app is a comprehensive health and fitness tracker that monitors workouts, heart rate, sleep, and recovery. It provides actionable insights to help users train smarter and achieve their fitness goals.
Create and follow custom interval training routines for various fitness activities. This app offers extensive customization for intervals, alerts, and goals, with seamless integration for Apple Watch and Apple Health.
This app helps runners and coaches calculate training paces, equate race performances, and adjust for environmental factors. Based on decades of scientific research, it provides a VDOT score to measure running ability and compare performances across different distances.
This app analyzes your health data to provide personalized training recommendations, recovery insights, and sleep analysis. It offers AI-powered explanations, body energy tracking, and stress monitoring to help you train smarter and feel healthier.
Measure your heart rate and stress levels accurately using your phone's camera. Track trends, view pulse waveforms, and utilize a StandUp test for fitness insights. Integrates with Apple Health.
This app simplifies weightlifting calculations, instantly determining the correct plates to load onto a barbell. It offers custom settings for inventory and a reverse calculator, along with tools for meet preparation and performance scoring.
This app helps you achieve a healthier, more active lifestyle by tracking your physical activity and providing personalized goals. It awards points for moderate and intense exercise, aligning with recommendations from health organizations to improve heart health, sleep, and mental wellbeing.
Calculate Army Fitness Test (ACFT, APFT) scores, body composition, and promotion points. Get target raw values for minimum, maximum, or 80% scores based on gender and age. Includes event instructions and links to official resources.
Measure and monitor your heart rate anytime, anywhere using your phone's camera. Track your heart rate over time with simple graphs and detailed history. Export and share your data, and integrate with Apple Health.
This app offers short, high-intensity interval training (HIIT) workouts that can be done anywhere with no equipment. It provides scientifically proven exercises, custom timer templates, and progress tracking to help users achieve fitness results quickly.
Calculate your daily calorie needs for weight management using advanced formulas. This tool helps determine energy expenditure for weight loss, gain, or maintenance, offering insights into BMR, RMR, and BMI.
This app helps you optimize your workouts by monitoring exercise intensity and visualizing it through heart rate zones. It supports over 70 workout types and provides detailed insights into your performance, all accessible on your Apple Watch and iPhone.
This app analyzes your Apple Watch data to provide personalized insights into your recovery, exertion, and sleep. It offers daily recommendations for training, sleep targets, and bedtime, along with 24/7 health monitoring and detailed workout analysis.
This app helps U.S. Navy Sailors quickly calculate, log, and track their Physical Readiness Test (PRT) and Body Composition Assessment (BCA) scores. It supports current regulations, including alternative cardio events like swimming and cycling, and provides detailed scoring breakdowns for each component of the test.
This app provides a customizable interval timer for various workouts, allowing users to set single or multiple work and rest periods. It offers extensive customization options for alarms, program saving, and display, ensuring a tailored timing experience for any fitness routine.
This app guides beginners from zero running experience to completing a 5k race over an 8-week program. It features interval training, animated stretching, and voice cues for pace and distance, even with a locked screen. It integrates with health tracking and offers an Apple Watch companion app.