Heartool

Name: Heartool
Rating: 3.1 (17 reviews)
Author: Shenzhen Onecoder Technology Co., Ltd.

By: Shenzhen Onecoder Technology Co., Ltd. App

Health & Fitness

Overview

Version:

2.0.3

Last updated: 2025-12-08

Ranking

#329,847 ▲ 38,057

Overall

Features & Capabilities

Turn your phone into a fitness tracker with Heartool, to record your workouts with heart rate data. It is a concise and most accurate way to measure your training progress, to reach your fitness goals.

Working with wearable devices to train in real time. For heart rate sensor recommend: www.fitcare.com

Heartool gives you:

1.Tracking your live heart rate at right intensity for maximum results. With professional chart records, users could see their exercise effects when and after their training.

2.HRV biofeedback. Based on the heart rate sensor R-R interval data, together with professional algorithm, Heartool could help you to know your health and training status.

3.Cardio health condition. Based on the waveform (ECG) data and through the professional algorithm, Heartool could help you to discover hidden heart health hazards in time.

HealthKit

Heartool Will share the record (heart rate) to the Apple's health applications after each exercise
Because the privacy of your health data is very important, the user must agree to authorize Apple Health in "Set up -> Authorization" in the Heartool APP before sharing the heart rate data to your Apple Health app.
Heartool Connect to a healthy feature supports iPhone 6 and above devices, and the system version is iOS9.0 and above.

Main features: 1.Personalized heart rate zone setting, sync to the training sensor. 2.Calories burned checking based on the workouts. 3.Storing data import. If sensors not connected to the App, data could sync to the App after training. 4.Daily health management with cardio status and stress reflect. 5.Health data record, review a summary of the result from your entire workout history.

User Growth & Download Statistics

App

By:

Shenzhen Onecoder Technology Co., Ltd.

Rating:

3.10

(17)

Version:

2.0.3 Last updated: 2025-12-08

Version code:

880371585

Creation date:

2021-09-23

Compatible devices:

Size:

24.49MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-28

Compare stats and ranking:

Ranking

# 329,847 ▲ 38,057

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Shenzhen Onecoder Technology Co., Ltd.

Apple Apps Store

https://apps.apple.com/us/app/heartool/id1567361608

User Reviews

Heartool provides real-time heart-rate data, zone percentages, calories, and a visual chart, with HIIT-friendly alerts and workout history, and it works well with Coospo HR monitors. Users praise its simple, accurate interface and usefulness for basic HR tracking. However, many reviews flag recurring network errors and login problems that break tracking and data saving; zone data can be incomplete or miscalculated (missing time-in-zone, inconsistent percentages); and there are occasional data accuracy issues compared with other apps and devices. Overall, core features are solid when functioning, but reliability and data accuracy need improvement.

Pros

Works well with Coospo chest/arm heart rate monitors when connected.
Real-time BPM display, heart rate zones (percentages), calories burned, and a live color-coded chart with zone alerts.
Keeps a workout history with analysis options and max heart rate warning.
Simple, accurate, and useful interface suitable for HIIT and basic HR tracking.

Cons

Frequent network errors and login issues that prevent tracking and data saving.
Zone data display issues: missing time-in-zone data and inconsistent percentage calculations.
Data accuracy concerns: readings may not match other devices/apps and calories are overestimated.

Recent reviews

I’d love to use this tech but it never connected to the app. I’m wondering if the pre-installed battery was the issue. I wanted to be able to pair and go but now this has to go back.

by Jr*****, 2026-07-02

I too am 80 years old and working with a coospro chest strap. The app is great: lets me monitor my hr in real time, lets me record my workout to show duration, avg hr, and max hr. But the exercise zones are set way too high for someone my age, who has a maximum hr. of 140. So the zone tracking is useless to me. I wish the app allowed me to reset that max manually, or to define the zones myself, or to calculate/monitor the zones itself based on the user’s age.