250+ iOS apps curated and reviewed
The best aerobic threshold calculator apps on iPhone average 3.8★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | No | Jul 2026 |
| 2 |  | $2.99 | — | No | No | May 2026 |
| 3 |  | Free | 1.0★ (13) | — | No | Aug 2026 |
| 4 |  | $1.99 | — | No | No | Jun 2026 |
| 5 |  | $1.99 | 2.4★ (14) | No | No | Jul 2026 |
| 6 |  | Free | 4.6★ (29) | No | No | May 2026 |
| 7 |  | Free | — | No | No | May 2026 |
| 8 |  | Free | — | No | No | Aug 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.
Estimate your VO2max using a mathematical model based on your past running performance. This tool generates training paces and race predictions for distances from 1500 meters to marathons. It serves as a framework for training, but always consult a professional before implementing estimates.
This app calculates personalized training heart rate zones for athletes. It offers various calculation methods based on your data and provides explanations for each zone. The zones can be used with heart rate monitors and training diaries for improved performance.
This app calculates your VO2 Max in just 3 minutes using a simple heart rate method. It's based on scientific research and provides general health information, not medical advice.
This app helps you determine your optimal target heart rate zones for exercise based on your age and resting heart rate. It guides you to stay within the ideal zone to maximize cardiovascular benefits, burn fat, and prevent injury.
Calculate your required treadmill speed for a specific distance and time. This tool helps you set the correct pace for training or fitness tests, providing lap time goals for optimal performance.
This medical app calculates QTc using nine different formulas. It allows users to input heart rate or RR interval and QT interval length for quick results. An Apple Watch app is also included for convenient access.
Perform calculations with hours, minutes, and seconds. This ad-free utility is ideal for fitness enthusiasts, scientists, and anyone needing precise time-based math. Easily calculate paces, splits, and convert times between distances.
This medical app provides pediatricians with a comprehensive set of calculators for body percentiles, blood pressure, echocardiography, and more. It supports various calculation methods and guidelines, aiding in accurate patient assessments. Developed by a pediatrician, it serves as a control tool for medical professionals.
Effortlessly convert between distance, time, pace, and speed. This tool simplifies race planning with split calculators and quick access to common race distances. Enjoy a private, ad-free experience with customizable settings.
Calculate your running pace per mile or kilometer quickly and easily. This free tool features a new design for faster input of distance and time to determine your pace. It's a clean and simple utility for all runners.
This application helps swimmers learn and calculate their critical swim speed and sprint distance index. It also allows users to predict their race times based on their performance metrics.
Calculate your daily calorie needs for weight maintenance, gain, or loss. This app uses the Mifflin-St Jeor equation for accurate estimations and provides evidence-based tips for sustainable calorie reduction.
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.
Calculate calories burned across hundreds of exercises with a daily log and progress tracking towards your fitness goals. Supports both imperial and metric units for personalized tracking.