# MyZio vs Know Your CML

The clearest difference is ratings volume: MyZio at 68K against Know Your CML's 1. MyZio also leads on chart position (#35 vs unranked). Know Your CML's advantage is update cadence (monthly vs every 5 months) and rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Know Your CML holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: MyZio has 68K ratings behind it against 1, so its average is the more settled of the two.

MyZio ships an update every 5 months, Know Your CML monthly. The most recent releases landed on October 22, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | MyZio | Know Your CML |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (68K ratings)](https://appshunter.io/ios/app/myzio/id975444227/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/know-your-cml/id1591499666/reviews)** |
| Number of ratings | **68K** | 1 |
| Positive reviews | 53.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free | Free |
| Best chart rank | **#35** | — |
| Size | 63 MB | 59 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [iRhythm Technologies, Inc](https://appshunter.io/developer/975444226) | [Leukemia Patient Advocates Foundation](https://appshunter.io/developer/1038000285) |

## What reviewers say

### MyZio

[App page](https://appshunter.io/ios/app/myzio/id975444227)

**Currently charting:** #35 Top Free · Medical (US App Store)

Log your symptoms and track your ECG monitor's shipping status. Access helpful information and instructional videos to guide you through your monitoring experience.

**Highlights:** Log and edit symptoms, Track monitor shipping status, Register Zio ECG monitor, Access Zio service information, View instructional videos, Create MyZio account

**In-app purchases:** none

**What reviewers like**

- 🚀 Thoughtfully designed device
- 👍 Easy to use app
- 👍 Convenient and user-friendly
- 👍 Straightforward instructions
- 👍 Helpful app features

**What reviewers complain about**

- 🐛 Adhesive issues and device falling off
- 🔒 Lack of clear device status indication
- 🔒 Inability to edit logged entries
- 🔒 Restrictive usage guidelines
- 🔒 Unreliable data collection

**Reported bugs**

- App login and registration issues
- Inconsistent app behavior and UI
- Limitations in logging symptoms

**Requested features**

- More removable pads for extended wear
- Option to log accidental button presses
- Ability to edit logged entries
- Real-time heart rate monitoring
- Improved app design and functionality


### Know Your CML

[App page](https://appshunter.io/ios/app/know-your-cml/id1591499666)

This medical app helps patients and caregivers manage chronic myelogenous leukemia. It allows users to track side effects, compare test results, and access updated treatment guidelines and community news. Developed by patients for patients, it aims to support best practice sharing globally.

**Highlights:** Monitor side effects, Compare test results, Access treatment guidelines, View community news, Benchmarking data with other patients, Global patient organization network

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MyZio free?

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

### Is Know Your CML free?

Know Your CML is free to download, with no in-app purchases.

### Which has better reviews, MyZio or Know Your CML?

Know Your CML is rated higher. MyZio averages 4.8 out of 5 from 68K ratings, while Know Your CML averages 5.0 from 1 ratings.

### Do MyZio or Know Your CML have ads?

Neither MyZio nor Know Your CML shows ads.

### Which is updated more often, MyZio or Know Your CML?

MyZio ships an update every 5 months, and Know Your CML monthly. Most recently, MyZio was updated on October 22, 2026 and Know Your CML on October 12, 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.*