# Zones Cardio — 20-Minute Treadmill Workouts

> 20-minute science-based treadmill workouts for efficient cardio and results. (iPhone/iPad app by Redline Cardio, LLC.)

- Source: https://appshunter.io/ios/app/zones-cardio/id6753190307 (this page in markdown: same URL + `.md`)
- Developer: [Redline Cardio, LLC](https://appshunter.io/developer/1569061053)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 14.0 · 34 MB
- Languages: American English
- Released: 2025-10-27
- Data updated: 2026-07-17
- Monetization: subscription
- User reviews in markdown: https://appshunter.io/ios/app/zones-cardio/id6753190307/reviews.md

## What is Zones Cardio?

Transform your treadmill workouts with Zones Cardio — the app that turns every 20 minutes into a results-driven cardio session.

Whether your goal is weight loss, overall fitness, or better performance, Zones uses science-based heart rate variability training to give you the benefits of a 60-minute run in just 20 minutes.

What Makes Zones Cardio Different
• Scientifically Designed Programs: Each session is created from research-backed algorithms that optimize your workout intensity minute by minute. 
• Simple, Guided Workouts: Just press Today's Workout — no more guessing what to do on the treadmill. 
• Proven Results: Burn more fat, build endurance, and improve cardiovascular health — in less time. 
• Engaging and Varied: Every day's workout is different, keeping you motivated and free from treadmill boredom. 
• Four Zones, One Goal: Alternate between walking, jogging, running, and sprinting to maximize heart rate variability and results.

Choose Your Program:
• Zones Starter: Begin your fitness journey safely and effectively. 
• Weight Loss: Burn calories and boost metabolism fast. 
• Total Fitness: Build endurance, strength, and overall cardiovascular health. 
• Tactical: Build tactical strength for real-world performance. 
• Athlete: Enhance athletic performance and stamina.

Why It Works:
Studies show that alternating between intensity zones increases calorie burn, boosts heart health, and accelerates results — even when training for just 20 minutes.

Subscription Required
Access to all programs requires an active subscription. 
• 7-Day Free Trial: Try Zones Cardio risk-free 
• Monthly Plan: $19.99/month after trial 
• Annual Plan: $119.99/year (best value — save 50%) 
• Payment will be charged to your iTunes Account at confirmation of purchase 
• Subscription automatically renews unless canceled at least 24 hours before the end of the current period 
• Manage subscriptions in iOS Settings → Subscriptions

Privacy Policy & Terms of Use: https://zonescardio.com/legal

Get ready to experience cardio redefined.
Download Zones Cardio today and start your 7-day free trial.

## Key features

- 20-minute results-driven cardio sessions
- Science-based heart rate variability training
- Guided workouts for weight loss, fitness, and performance
- Optimized intensity minute by minute
- Engaging and varied daily routines
- Four intensity zones for maximum results

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Zones Cardio Monthly | $19.99 | per month |
| Zones Cardio Annual | $119.99 | per year |



## Frequently asked questions about Zones Cardio

### What is the short name for Zones Cardio?

The short name for the app is Zones Cardio.

### How long are the workouts in Zones Cardio?

Each workout session in Zones Cardio is designed to be 20 minutes long, aiming to provide the benefits of a longer run.

### What kind of training does Zones Cardio use?

Zones Cardio utilizes science-based heart rate variability training, scientifically designed programs, and alternates between four intensity zones to optimize workouts.

### What are the subscription options for Zones Cardio?

Zones Cardio offers a 7-day free trial, followed by a monthly plan at $19.99/month or an annual plan at $119.99/year. Subscriptions automatically renew unless canceled.

### How can I manage my Zones Cardio subscription?

You can manage your subscription by going to iOS Settings, then selecting 'Subscriptions'. Ensure cancellation occurs at least 24 hours before the current period ends.

### What devices does Zones Cardio support?

Zones Cardio is supported on iPhone, iPad, and iPod, as indicated by its compatibility with iOS devices.

### How often is Zones Cardio updated?

The app was last updated on February 14, 2026, with version 1.4. This suggests regular updates to improve functionality and add content.

### Is Zones Cardio suitable for beginners?

Yes, Zones Cardio offers a 'Zones Starter' program specifically designed to help beginners begin their fitness journey safely and effectively.

## Version history (last 5 releases)

### 1.4 — 2026-02-14

- Added "Tips for Success" video library to help you get the most out of your training
- 4 new sport-specific programs: train smarter for your game
- Fixed timer accuracy so your intervals stay perfectly on track
- Cleaner workout screen with distraction-free layout
- Improved post-workout sharing experience
- Enhanced account management with clearer messaging and guidance

### 1.3 — 2026-02-07

• Enhanced email integration
• Bug fixes and improvements

### 1.2 — 2026-01-10

bug fixes with Apple sign in

### 1.1 — 2025-11-14

- Improved sign-in experience with Apple Sign In
- Fixed navigation issues for smoother app experience
- Enhanced subscription status synchronization
- General bug fixes and performance improvements
- Additional fitness program options

### 1.0 — 2025-10-28

No release notes.

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## More apps by Redline Cardio, LLC

- [Redline Cardio](https://appshunter.io/ios/app/redline-cardio/id1569061051)

All apps by Redline Cardio, LLC: https://appshunter.io/developer/1569061053

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-17.*