204+ iOS apps curated and reviewed
Out of 204+ zones cardio apps on iOS, 18 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | Yes | Jul 2026 |
| 2 |  | Free | 4.8★ (19K) | No | Yes | Jul 2026 |
| 3 |  | Free | 4.4★ (1.1K) | Yes | Yes | Jul 2026 |
| 4 |  | Free | 4.6★ (13K) | No | Yes | Jul 2026 |
| 5 |  | Free | 2.0★ (1) | No | No | May 2026 |
| 6 |  | $1.99 | — | No | No | May 2026 |
| 7 |  | $49.99 | 4.3★ (40) | No | No | Jun 2026 |
| 8 |  | Free was $4.99 | 4.7★ (236) | No | Yes | Jul 2026 |
This app offers 20-minute treadmill workouts designed to maximize results using science-based heart rate variability training. It provides guided sessions for weight loss, fitness, and performance, making cardio more efficient and engaging.
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 uses your heart rate to personalize workouts, optimizing calorie burn and performance. Earn points for effort in high-intensity zones and track your progress in real-time with connected devices.
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.
This app helps you achieve your heart health goals by tracking your workouts in different heart rate zones. Set weekly targets, monitor your progress as you close rings, and improve key metrics like resting and maximum heart rate.
Train effectively by keeping your heart rate within target zones during various activities. Analyze your performance with cumulative graphs and track your routes. Measure fitness metrics and access preloaded or custom heart rate zones.
This app helps you track your weekly workout time spent in the Zone 2 heart rate range. It provides detailed tracking, connectivity with various heart rate monitors and Strava, and real-time feedback on your progress towards your fitness goals.
This app helps you train smarter by using your heart rate data. It tracks workouts, provides real-time feedback, and integrates with wearables and Apple Health to offer insights into your performance and progress.
Track your heart rate zones, calories, and points during cardio workouts with real-time feedback. Personalized zone thresholds adapt to your fitness level, helping you maximize training and calorie burn. Integrates with Apple Watch and Bluetooth heart rate monitors.
This app tracks heart rate and steps for various activities, offering personalized training zones and workout optimization. It provides detailed data, calorie tracking, and motivational progress visualization, all for free.
This app acts as a personal heart rate coach for interval training. It allows you to create custom workouts or download community-made ones, guiding you to stay in specific heart rate zones. It integrates with health apps to provide detailed training insights.
This app transforms your Apple Watch into a Bluetooth heart rate monitor. It broadcasts your heart rate to various gym equipment and popular fitness applications, eliminating the need for a chest strap. Train effectively with real-time effort tracking and personalized heart rate zones.
Monitor your heart rate and daily activities with this comprehensive health tracker. It analyzes cardiovascular health, provides smart recommendations based on AHA studies, and offers detailed stress and sleep analysis. View your data through an elegant interface with color-coded charts and timelines.
This app guides you through personalized Zone 2 and high-intensity sprint training protocols to improve mitochondrial efficiency and maximize VO2 Max. It offers real-time feedback, projects future health outcomes, and tracks your progress towards longevity goals.
This app provides personalized workout recommendations and thousands of fitness routines for both gym and home. It helps users track progress, schedule workouts, and integrate with fitness trackers. Access club information and check in easily with your membership.
Explore hundreds of immersive global workouts on your cardio machine. Features interactive pacing, stunning visuals, and optional coaching. Download for offline use and sync with Apple Health.
Track your heart rate zones during various workouts with detailed graphs and optional alerts. This app offers standalone watchOS functionality for convenient training monitoring, even in low light conditions.
Optimize your workouts for fat loss by staying within your target heart rate zone. This app provides real-time guidance and tracks your progress to help you burn more fat and train smarter.
This app announces heart rate zone changes aloud during workouts like running or cycling. It also allows you to read your zone from a distance for activities like weightlifting or yoga. It integrates with other fitness apps and works with all Bluetooth heart rate monitors.