Simple Zones

Simple Zones

Heart Rate Training Simplified

50 ratings
31 reviews
Free
In-App Purchases

Details

Released
April 17, 2021
Updated
October 5, 2026

Features

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About

Track your workouts in real-time using heart rate zone training. Get instant feedback on your performance to optimize intensity and achieve your fitness goals. Supports Apple Watch and Bluetooth heart rate monitors.

✓Real-time heart rate zone visualization
✓Apple Watch and Bluetooth HRM support
✓Customizable zone models
✓Apple Health integration
✓Workout data syncing
✓Activity ring tracking
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What's New in Simple Zones

6.1.3

October 5, 2026

A brand-new Simple Zones! • All-new design: a cleaner home screen, a new live zone display, and full dark mode support. • New setup: pick your heart rate source and the zones you train in, with a live preview of each zone model. • More heart rate sources: use your Apple Watch, AirPods Pro 3, Powerbeats Pro 2, or any Bluetooth heart rate monitor. A new Heart Rate Source screen shows what's connected. • Workout summary: see your time in each zone after every workout, and save it as an image to share. • Easier max heart rate: adjust it with simple + and − buttons. • Updated zone models, including Orange Theory's latest zone names. Apple Watch improvements: • Workouts keep running and recover their heart rate on their own after a brief drop. • End a watch workout from your iPhone, with a confirmation first. • Calories saved to Apple Health are now accurate. Plus many smaller fixes, and support for Reduce Motion throughout.

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Subscriptions & In-App Purchases

$9.99

Zones Pro

Get unlimited workout session length

User reviews

Not worth money

Don’t buy! Not worth the money. I paid for app and regret it. Problematic if you use a hr sensor other than apple watch. I use polar H10 chest strap and now have ran into 3rd bug that’s preventing app from working right.

Got bug still broke

I use polar h10 chest strap with simple zones app for indoor bike workouts. The app recognizes and connects to the chest strap and tracks my heart rate fine. The problem is with workout calories. It won’t show calories on screen during a workout even tho I have that toggled on in settings but it somehow does record calories in apple health app when I finish my workout.
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Not sure about kcal accuracy

I do strength training and cardio. For cardio I use bowflex bike withe stupid jrny app from bowflex. It lists all the stats for the ride but doesn’t connect to my apple watch to be able to show heart rate during ride. I do heart rate zone training so needed something that would show on my iPhone. They suggested I buy I chest strap monitor but the polar h10 one I decided was best is like $100. So I decided to try to find some heart rate app that would work with apple watch first and found this app.
I bought it and tried it out starting both this app and the jrny app at same time then riding for 45mins. This app seemed to work fine for heart rate but I noticed calories didn’t match on both apps. Like it was even close. This app showed much less calories burned than the jrny app. So not sure I’m gonna stick with the app or not since idl which app is correct kcal number.
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Found my app

Tried a bunch of heart rate zone training apps, this is the one. I can’t believe I’m actually writing a review for this lol. (I never write reviews)

Good App One Big Flaw

Overall a good app for heart rate zone training, however it does provide distance on display.

Developer apps

FAQ

What does the Zones Training app do?

This app provides real-time heart rate zone training to help you optimize your workout intensity. It visualizes your effort based on your heart rate, allowing you to adjust your pace to maximize results, improve recovery, and reduce the risk of overtraining.

What are the key features of this heart rate tracker?

Key features include real-time heart rate zone visualization, support for Apple Watch and standard Bluetooth heart rate monitors, integration with Apple Health to save workout data and sync to other apps like Strava, and the ability to choose from five different branded zone models.

How much does the Zones Training app cost?

The app is free to download and use, but it offers in-app purchases for additional features or content. Specific pricing for these in-app purchases can be found within the app itself.

What devices are compatible with Zones Training?

The app is compatible with Apple Watch Series 3 or later. It also supports any standard Bluetooth heart rate monitor, including popular brands like Polar, Wahoo, and Garmin.

Who would benefit from using this app?

This app is ideal for anyone engaged in physical activity who wants to train more effectively. This includes runners, cyclists, and gym-goers looking to improve endurance, burn fat, enhance performance, or simply ensure they are working out at the optimal intensity for their goals.