Free

Details

Released
October 20, 2012
Updated
October 7, 2026

Features

Cardalis screenshot #1 for iPhone
Cardalis screenshot #2 for iPhone
Cardalis screenshot #3 for iPhone
Cardalis screenshot #4 for iPhone
Cardalis screenshot #5 for iPhone
Cardalis screenshot #6 for iPhone
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About

Monitor your dog's resting respiratory rate to help manage heart failure. This app helps you record and graph the data, which can then be emailed to your veterinarian.

✓Measure resting respiratory rate
✓Record rate as a graph
✓Email results to veterinarian
✓Track heart failure progression
✓Informational and educational tool
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What users say about Cardalis

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What's New in Cardalis

2.8

October 7, 2026

Updated the minimum supported iOS version to 15.0.

User reviews

You’ve made it worse

You’ve updated the app and wiped everyone’s important data that they have been collecting, probably for years. The app is awful that you’ve made. You can’t easily switch between pets. You now have to measure for 60 seconds instead of 30. My dog’s profile picture is uploaded sideways. I can’t delete or edit a medication reminder.
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What’s happened to this app

This app now regularly logs me out and I have to reset my email and password. I really can’t understand why such a good app has had such a shockingly bad “upgrade”. I’ve been recommended a better app from the vet because so many people are complaining.

Cats?

Was given this app by my vet…for my cat. You know, they have heart issues too. Add cats. Otherwise…fail

Can’t input data to use the app

Was advised by my vet to download this. 2 days I load it up. I put dog details. Then the reminder comes up. I set that and it won’t save. Keeps saying error. So I can’t even use it.

ruined a good app

they’ve erased all my data, now they force you to create an account, their list of breeds is woefully inadequate (and why is it required anyway?), plus i can’t even save my dog’s info or create medication reminders because of a “server error”

Developer apps

User experience

🐞

Reported Bugs

18 issues

Critical data loss during app updates

Bug

App freezes and crashes on launch or navigation

Bug

Email functionality not working or removed

Bug

Print functionality broken or removed

Bug

Notes not saved or retrievable

Bug

Persistent high-reading alerts cannot be dismissed

Bug

Graph display corrupted on iPhone 15 Pro Max (notch coverage)

Bug

Involuntary screen rotation between portrait/landscape

Bug

Keyboard popup blocks comment input field

Bug

Settings changes not saving (target frequency modification)

Bug

Incorrect timezone display with no adjustment option

Bug

Daylight saving time not handled correctly

Bug

Notification badge (red circle with '1') cannot be removed

Bug

Graph data outside screen boundaries

Bug

Reminders triggering at wrong frequency or times

Bug

Menu buttons hidden by keyboard

Bug

Incompatibility with older iOS versions

Bug

iPad compatibility issues

Bug
✨

Requested Features

18 requests

Support for multiple pets/dogs in single app

Feature

Cat-friendly version or pet-neutral branding

Feature

Ability to add notes to all readings (not just high ones)

Feature

Customizable timer intervals (15, 60 seconds)

Feature

Ability to enter past/historical readings

Feature

Multi-user sharing for same pet

Feature

Better graph navigation and date range filtering

Feature

Acoustic signal when timer ends

Feature

List view option for data display

Feature

Awake vs sleeping breathing rate distinction

Feature

Comments visible on chart with tap-to-view icons

Feature

Remove splash screen on app launch

Feature

Improved graph with hover-over time details

Feature

Export as JPEG format

Feature

Line-of-best-fit for multiple daily readings

Feature

Ability to modify/delete individual readings

Feature

Disable reminders without data loss

Feature

Timezone settings adjustment

Feature

FAQ

What does this app do?

This app helps you measure and record your dog's resting respiratory rate. This data is presented as a graph, which can be emailed to your veterinary surgeon. It is intended for informational and educational purposes related to managing dogs with or at risk of heart failure.

How can I use this app to help my dog?

If your dog has or is at risk of heart failure, your vet may ask you to monitor their resting respiratory rate. This app allows you to easily track this metric over time, providing valuable data for your veterinarian to assess your dog's condition and treatment.

Is this app free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned.

Can this app diagnose my dog's heart condition?

No, this app is intended for informational, educational, and research purposes only. It is not a diagnostic tool and should not be used to diagnose, cure, mitigate, treat, or prevent any disease or condition in animals. Always consult with your veterinary surgeon for diagnosis and treatment.

What kind of information can I share with my vet?

You can share a graph of your dog's recorded resting respiratory rate with your veterinary surgeon. This data can help them monitor the progression of heart failure or assess the effectiveness of treatment over time.