Zone Trainer: Heart Rate Zones

Zone Trainer: Heart Rate Zones

Heart rate zones hands-free

18 ratings
16 reviews
Free

Details

Released
February 28, 2023
Updated
October 7, 2026

Features

Zone Trainer: Heart Rate Zones screenshot #1 for iPhone
Zone Trainer: Heart Rate Zones screenshot #2 for iPhone
Zone Trainer: Heart Rate Zones screenshot #3 for iPhone
Zone Trainer: Heart Rate Zones screenshot #4 for iPhone
Zone Trainer: Heart Rate Zones screenshot #5 for iPhone
Zone Trainer: Heart Rate Zones screenshot #6 for iPhone
Zone Trainer: Heart Rate Zones screenshot #7 for iPhone
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About

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.

✓Real-time heart rate zone announcements
✓Audible and visual zone feedback
✓Works with Bluetooth heart rate monitors
✓Integrates with other fitness apps
✓No accounts or premium features
✓Hands-free operation
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What's New in Zone Trainer

1.5

October 7, 2026

• Support for Apple Watch. (watchOS allows only one workout at a time, so other fitness apps can't record while the watch is the source. Bluetooth sensors still can.) • Landscape support • Larger numbers, filling the screen on iPhone and iPad. • Now uses the highest-quality voice installed on your device.

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User reviews

Exactly what I needed!

I was trying to solve two problems: custom heart rate zones and not having to check my watch. This app is simple, pairs easily, and the colors make it so you barely have to glance at it to know what zone you’re in. It’s exactly what I needed.

My garmin HR zones don’t align with my trainings three-category system (low being no more than 75% max HR, medium up to 85%, and high up to 95%. I didn’t want to try to make the watch match and mess up my overall zones, and I am used to monitoring HR on my phone while on the treadmill. This app solves both problems!
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Almost perfect!

Love the simplicity it’s virtually perfect. The only thing missing is Apple Watch version!!

Great App!

This app is awesome! Nice to have these features without a subscription fee! Thanks!

Perfect app for heart rate based interval training

This app connects to your heart rate chest (or arm) strap and displays your heart rate and age based zone in real time while you work out. I have it in front of my Assault Bike and do HR based interval training. It connects to my HR straps (Garmin and Polar) flawlessly. Just get the app and start working out!
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Exactly what I needed

It’s 2025 and one guy, one guy - Stanley James, has an app that displays your heart rate, big and color coded to your zone, and announces your zone and zone transitions. This is the one you are looking for. I use it on my iPhone.

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FAQ

What is Zone Trainer?

Zone Trainer announces your heart rate zone changes aloud during activities like running and cycling, and allows you to read your zone from a distance for strength training or yoga. It's designed for informational purposes and not for medical use.

Does Zone Trainer have ads?

No, Zone Trainer is ad-free. The app is completely free to use without any advertisements.

What devices does Zone Trainer support?

Zone Trainer is available for iPhone, iPad, and iPod. It works with all Bluetooth heart rate monitors, including popular brands like Garmin, Polar, and Wahoo.

Can I use Zone Trainer with other fitness apps?

Yes, Zone Trainer is designed to be used alongside other fitness applications such as Strava and MapMyRun. It provides real-time heart rate zone data that can complement your existing tracking.

Does Zone Trainer require an account?

No, Zone Trainer does not require any accounts to use. It offers a straightforward experience without the need for sign-ups or premium feature unlocks.

How often is Zone Trainer updated?

The latest version of Zone Trainer is 1.2, which was last updated on February 26, 2024. Updates aim to improve functionality and compatibility.

What is the age rating for Zone Trainer?

Zone Trainer has an age rating of 4+. This indicates it is suitable for a wide range of users, including children.

Is Zone Trainer accurate for heart rate monitoring?

Zone Trainer works with all Bluetooth heart rate monitors, so its accuracy depends on the quality of your connected monitor. The app itself is for informational purposes and not intended for medical use.