# Cardio Chart vs CadioWatch

The clearest difference is update cadence: CadioWatch at every 5 days against Cardio Chart's every 25 months. CadioWatch also leads on ratings volume (4 vs 1) and device support (3 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Cardio Chart against 5.0 for CadioWatch. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Cardio Chart ships an update every 25 months, CadioWatch every 5 days. The most recent releases landed on July 4, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | Cardio Chart | CadioWatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/cardio-chart/id1180616397/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/cadiowatch/id1662184405/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 0 MB | 8 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Clever Armadillo LLC](https://appshunter.io/developer/570999114) | [OAXON INC.](https://appshunter.io/developer/1164814009) |

## What reviewers say

### Cardio Chart

[App page](https://appshunter.io/ios/app/cardio-chart/id1180616397)

Visualize your heart rate during workouts with detailed graphs. Track maximum and average heart rates to understand exercise impact. Requires heart rate data recorded to the Health app.

**Highlights:** Heart rate workout graphs, Maximum heart rate display, Average heart rate display, Health app integration, Workout data visualization

**In-app purchases:** none


### CadioWatch

[App page](https://appshunter.io/ios/app/cadiowatch/id1662184405)

Monitor your heart rate and blood oxygen levels with this companion app for Apple Watch. Easily share your health data charts with doctors, trainers, or family. View your historical health metrics with an intuitive interface.

**Highlights:** Heart rate monitoring, Oxygen saturation tracking, Data sharing via QR code, Historical health data viewing, Intuitive app design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cardio Chart free?

Cardio Chart is free to download, with no in-app purchases.

### Is CadioWatch free?

CadioWatch is free to download, with no in-app purchases.

### Which has better reviews, Cardio Chart or CadioWatch?

Cardio Chart and CadioWatch are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do Cardio Chart or CadioWatch have ads?

Neither Cardio Chart nor CadioWatch shows ads.

### Which is updated more often, Cardio Chart or CadioWatch?

Cardio Chart ships an update every 25 months, and CadioWatch every 5 days. Most recently, Cardio Chart was updated on July 4, 2026 and CadioWatch on June 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*