# Corrate

> Real-time audio heart rate monitoring and training guidance for athletes. (iPhone/iPad app by Erlend Thune.)

- Source: https://appshunter.io/ios/app/corrate/id1014082292 (this page in markdown: same URL + `.md`)
- Developer: [Erlend Thune](https://appshunter.io/developer/673691109)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Rating: 3.00/5 from 4 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 5 MB
- Languages: American English
- Released: 2015-08-28
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/corrate/id1014082292/reviews.md

## What is Corrate?

The app “HRT - Heart Rate Training” helps you keep the right pace while training and competing. The app tells you what your current heart rate is using audio. You select how often you want to be alerted and you select whether you want the information in bpm (beats per minute) or % of your maximum heart rate. To use the app you need a bluetooth smart heart rate device, for example Wahoo Blue HR or Polar H7. Many watches can also broadcast heart rate to your phone. Check in the user manual whether your can.

The app also features a Fartlek training program. This is a fun way of doing intervals. 

You will find many articles describing how to do heart rate training on the internet, by searching for ”Heart Rate Training”  for example. The main idea is that you get different results depending on what heart rate you have compared to your maximum heart rate. When competing, staying in an elevated heart rate zone too long can decrease your performance. One of the advantages with the HRT app is that you can select how often you want to be alerted and be able to adapt your performance immediately. The app is easy to use and is as suitable for professional athletes as for amateurs. The app also features a customizable heart rate recovery mechanism. Measure how fast your heart rate drops after training. It is normally considered to be a sign of improving physical condition if your heart rate drops faster.

The app is free. If you use it more than 10 times, a dialog box will be displayed giving you the option to support the development of the app.  You can continue to use the app for free by dismissing the dialog box. After an hour you will also hear a short audio message asking you to buy the app such that my wife can buy herself new shoes. This message will then be announced gradually more often, finally every 10 minutes.

## Key features

- Real-time audio heart rate alerts
- Customizable alert frequency
- Beats per minute (bpm) or % of max HR
- Bluetooth heart rate monitor support
- Fartlek interval training program
- Heart rate recovery measurement

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Heart Rate Training | $2.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/corrate/id1014082292/reviews.md

### 1/5 — Paywall

*2019-02-23, version 1.2*

It was not free as advertised. You only get an 11 day “free” trial which I hadn’t even used for the full 11 days before it tried making me pay for it. I know for a fact I only used the app for 3 days before a pop up asking for $3 showed up and wouldn’t let me use it anymore. Very misleading and upsetting.

### 5/5 — Perfect

*2016-09-09, version 1.2*

I just wanted a simple app to connect to my low energy Bluetooth heart rate monitor and this did the job perfectly for workouts

## Frequently asked questions about Corrate

### Does Corrate have ads?

No, Corrate does not contain advertisements.

### What devices does Corrate support?

Corrate is available on iPhone, iPad, and iPod. It requires a Bluetooth smart heart rate device to function.

### How accurate is Corrate's heart rate data?

The app relies on external Bluetooth heart rate monitors for data. Accuracy is dependent on the quality and connection of the connected device.

### Can I use Corrate offline?

The app's core functionality of providing audio feedback on heart rate requires an active connection to a Bluetooth heart rate monitor. Specific training programs may have offline capabilities, but this is not explicitly stated.

### What is the update frequency for Corrate?

The app was last updated on March 31, 2025, indicating recent development and maintenance. Previous updates have been released periodically since its initial launch in 2015.

### How does Corrate handle user privacy?

The description does not provide specific details on Corrate's privacy controls or data handling practices. Users should review the app's privacy policy for more information.

### What are the benefits of heart rate training with Corrate?

Heart rate training helps optimize performance by ensuring you train within specific zones. Corrate's audio feedback allows for immediate adjustments to maintain the desired heart rate, preventing overexertion during competition.

### Is Corrate suitable for beginners?

Yes, the app is described as easy to use and suitable for both professional athletes and amateurs. Its customizable alerts and clear audio feedback make it accessible for those new to heart rate training.

## Version history (last 5 releases)

### 1.8 — 2025-03-31

Fartlek now uses the same heart rate unit as the main view, i.e. either BPM (Beats Per Minute) or % or max heart rate.

### 1.7 — 2025-03-20

The background color in the main view now reflects the heart rate zone you are in.
The time since the last heart rate has been received from the heart rate device is displayed below the heart rate.

### 1.6 — 2025-03-17

Replaced deprecated and obsolete methods.
Improved user interface for connecting and disconnecting to bluetooth devices.
Improved fartlek feedback and user interface.
Added heart rates to heart rate zones view, based on max HR.

### 1.5 — 2020-12-09

Support newer ios versions.
Fixed a bug that caused the app to crash when running fartlek and switching between views.

### 1.4 — 2020-02-22

-Fartlek interval training.

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## More apps by Erlend Thune

- [Polpriser](https://appshunter.io/ios/app/polpriser/id876819682)
- [Cheese Heaven](https://appshunter.io/ios/app/cheese-heaven/id909882222)

All apps by Erlend Thune: https://appshunter.io/developer/673691109

## Related topics

[erlend thune](https://appshunter.io/ios/topics/erlend-thune)

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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 2026-06-11.*