AFT Calculator
阳 李 / ReaperDevs LLC
About this app
- Age 10
- Updated Jul 14, 2025
- OS IOS / Android
Editor reviews
AFT Calculator is a fast, accurate fitness calculator that helps you estimate training thresholds and build personalized heart rate zones. Designed for runners, cyclists, and everyday fitness users, it turns simple inputs into clear, actionable numbers you can use right away. Ideal for planning workouts, tracking progress, and optimizing performance in one lightweight Health and Fitness utility.
Core features
- Threshold and heart rate zone calculator using proven methods and sport types for running and cycling
- Quick tools for VO2max estimation, pace and speed conversion, and calorie burn planning
- Save, compare, and export results to streamline your training plan
Keywords: fitness calculator, heart rate zones, training zones, VO2max, health and fitness app, running, cycling
Screenshots
Recommanded games
How to use:
1. Download and open the app, then optionally create a profile with age, weight, and resting heart rate for better accuracy.
2. Choose a calculator: Threshold, Heart Rate Zones, or VO2max, and select your sport such as running or cycling.
3. Enter your data like resting HR, recent test results, pace, or power, then tap Calculate to see your numbers.
4. Review your threshold and personalized zones, save them to History, and label the session for easy tracking.
5. Use pace and speed converters, estimate calorie burn, and export zones to your training plan or share with your coach.