Cardiio: Heart Rate Monitor subscription: cost, reviews, how to cancel

• App Store rating4.7★ from 58,416 ratings
• Cheapest subscription$6.99 per week
• Reviews mentioning billing, last 12 months7 of 62 reviews

On this page: what it costs, how to cancel, what reviewers say.

What the data says

• Billing complaints in reviews7 of 62 reviews in the last 12 months mention charges, subscriptions, refunds or cancelling (11%)
• Free trial converts to a paid plan3 days free trial, then $6.99 per week

What Cardiio: Heart Rate Monitor costs

Download: Free. Subscriptions start at $6.99 per week.

• Weekly Pro Upgrade3 days free trial, then renews every week$6.99
• Annual Pro UpgradeRenews every year, no trial$39.99

How to cancel Cardiio: Heart Rate Monitor

1. Open Settings on your iPhone and tap your name at the top.
2. Tap Subscriptions.
3. Select Cardiio: Heart Rate Monitor (listed under a plan name such as Weekly Pro Upgrade).
4. Tap Cancel Subscription and confirm. You keep access until the end of the paid period.

If the app is not in that list, it was not billed through Apple. Cancel it with the developer instead: support page.

Charged after cancelling or during a trial? Request a refund at reportaproblem.apple.com within 90 days.

What reviewers say

Reported bugs

App crashes or freezes; Inaccurate or missing heart rate data; Inability to save or export readings.

Recent one-star reviews

All it wants is moneyWaste of time. Need to pay to use.

Slow and Hard to Work WithI do think the app is organized, however it’s SO difficult to work with and it takes like ten tries each time you want to record your heart rate. I tried using this for a class, but by the time it recorded, my heart rate would lower after a workout. It’s just not reliable and I’ve talked to some of…

Poor signal quality?I will watch as the app measures my heart rate and stays in a very narrow range as I hold my finger over the camera for however long. It seems perfect, but then it just says “poor signal quality” with no other explanation. The signal quality was in fact not poor as I watched the data being collected…

Recent five-star reviews

Interesting concept that worksUnbelievable how accurate this is. I do this about once per week and show the results to my dr. Gives me peace of mind.

Feeling oddA while ago I was feeling a little odd. I used your heart app and could see that my heart was missing beats and was able to call paramedics who came and dealt with me. Brilliant

Makes it simple!I enjoy checking my bpm with this makes it so easy

About the developer

Cardiio, Inc. has published on the App Store since Aug 9, 2012: 2 app(s), 0 of them no longer in the store.

• Themes: Widget, Icons Packs 154.5★

Alternatives to Cardiio: Heart Rate Monitor

• Instant Heart Rate: HR Monitor4.9★
• Welltory: Stress & Heart Rate4.7★
• InPulse - Heart Rate Monitor4.6★
• Heart Rate Monitor - Pulse BPM4.6★
• Heartify: Heart Health Monitor4.7★

Also similar: Pulsedo: Heart Rate Monitor (4.5★)

Questions people ask

How much does Cardiio: Heart Rate Monitor cost?

Download: Free. Subscriptions start at $6.99 per week.

How do I cancel Cardiio: Heart Rate Monitor?

On your iPhone open Settings, tap your name, tap Subscriptions, select Cardiio: Heart Rate Monitor and tap Cancel Subscription. You keep access until the end of the paid period.

Does Cardiio: Heart Rate Monitor have a free trial?

Yes: Weekly Pro Upgrade offers a 3 days free trial, then $6.99 per week.

Is Cardiio free to use?

Cardiio offers a complete set of free features for heart rate tracking and basic health monitoring. For more advanced features like in-depth pulse waveform analysis, blood pressure estimates, and detailed oxygen tracking, users can choose to upgrade to Cardiio PRO.

Cardiio: Heart Rate Monitor in one paragraph

Cardiio: Heart Rate Monitor by Cardiio, Inc. is a Health & Fitness app for iPhone. Download: Free. Subscriptions start at $6.99 per week across 2 plan(s). App Store rating 4.7 from 58,416 ratings. 7 of 62 reviews in the last 12 months mention charges, subscriptions, refunds or cancelling (11%). The developer has 2 app(s) on the App Store, 0 no longer listed. Cancel through Settings › Subscriptions on the iPhone. Data verified Sep 8, 2026 by AppsLupa.

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