MyZio

Review by eFreeware

If you have been prescribed a Zio ECG monitor, MyZio is the app that sits alongside it. It is made by iRhythm Technologies, the company behind the monitor itself, and it exists to handle the practical side of a monitoring period: following your device as it ships, registering it when it arrives, and recording symptoms as they happen. Anyone who has been given a Zio monitor and wants a single place to manage those tasks is the audience here.

The app is free, carries no ads and offers no in-app purchases, so there is nothing to buy or unlock. It has been installed more than 500,000 times and holds a 4.6 average from over 17,000 ratings, figures that suggest a large number of users have found it useful during their monitoring. The developer describes it as the companion to the Zio monitor, and that framing is accurate: this is not a general health tracker, it is a tool tied to one specific device and service.

Following your monitor from order to arrival

One of the first jobs MyZio takes on is shipping. You can check where your monitor is in transit, which is a small but genuinely useful thing when you are waiting for a device that has to be worn on a schedule. Instead of calling the clinic or digging through email, the status is in the app.

Once the monitor reaches you, the app is where you register it. The developer says registration happens in the app and that you can then start logging symptoms. That sequence matters because the symptom log is only meaningful once the device is linked to your record. The app also lets you sign up for a MyZio account at any point, so you can set that up before the monitor arrives rather than waiting until you have it in hand.

The shipping and registration features are the kind of administrative plumbing that is easy to overlook until you are the one waiting. Having them in the same place as the symptom log keeps the whole process in one app rather than spread across phone calls and paperwork.

Recording symptoms while you wear the monitor

The core of the app is symptom entry. While wearing the Zio monitor, you can log what you are feeling, and you can go back to view or edit those entries later. That editing ability is worth noting: if you tap the wrong option or want to add detail after the fact, you are not stuck with the original entry.

For anyone who has worn a cardiac monitor, the value of this is obvious. The monitor records the electrical activity, but it cannot know when you felt dizzy, when your heart raced, or when you had to sit down. Logging those moments gives the clinician reading the results something to match against the trace. The developer includes symptom logging as a key feature, and it is the part of the app most users will interact with daily during their monitoring period.

Because the app is free and ad-free, there is no friction around the logging itself. You open it, record what happened, and close it. That simplicity suits the use case, which is intermittent and often happens when someone is not feeling well enough to navigate a complicated interface.

Information and videos while you wait

Beyond the functional tasks, MyZio includes information about the Zio service and instructional videos. These are there to help you understand what the monitor does and how to wear it, which is useful if you have questions between appointments and do not want to wait on a phone call.

The videos are described as helping throughout the Zio experience, so they likely cover the setup and wearing period rather than being a general library. For someone who has never worn a monitor before, that kind of guidance can make the first days less uncertain. It is not a substitute for talking to your clinician, but it is a reasonable supplement.

The developer notes that features vary by market and country, so what you see may depend on where you are. The latest version adds Spanish language support and accessibility enhancements, which broadens who can use the app comfortably.

Getting set up

You can create a MyZio account at any time, then register your Zio monitor in the app and begin logging symptoms.

The app was released in July 2017 and was last updated in March 2026, so it has been maintained over a long period. That matters for a medical companion app, where you want the software to keep pace with the service it supports. The recent update focused on language and accessibility.

Who will get the most from it

MyZio is for people who are currently using a Zio ECG monitor or are about to start. If you have been given one of these devices, the app is the natural place to track its arrival, register it and record symptoms. The free price and absence of ads mean there is no reason not to install it if you are in that group.

It is not a general symptom diary or a heart health app for everyday use. It is tied to the Zio service and the monitor, and its features are built around that relationship.

The 4.6 rating from a large number of users suggests that people going through the monitoring process generally find it helpful. The app is rated for Everyone and sits in the Medical category, which fits its purpose as a companion tool rather than a diagnostic one.

A useful companion for a specific medical process

MyZio does a small number of things and does them for a clearly defined audience. It tracks your monitor's shipping, registers the device, lets you log and edit symptoms, and provides service information and instructional videos. It is free, has no ads, and carries no in-app purchases.

If you are wearing a Zio monitor, this is the app that keeps the administrative and logging tasks in one place. For its intended users, the combination of shipping updates, symptom logging and guidance makes it a sensible companion to have on your phone during the monitoring period.

What's new in version 2.2.1-rc1

The latest version includes support for Spanish language and accessibility enhancements.