# Cardalis vs RespiDog

The clearest difference is review sentiment: RespiDog at 100% against Cardalis's 21%. RespiDog also leads on rating (5.0 vs 2.3). Cardalis's advantage is update cadence (every 2 months vs every 22 months) and ratings volume (245 vs 3). 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.

RespiDog holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: Cardalis has 245 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 21% of Cardalis's written reviews are positive against 100% of RespiDog's.

Cardalis ships an update every 2 months, RespiDog every 22 months. The most recent releases landed on September 24, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Cardalis | RespiDog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (245 ratings)](https://appshunter.io/ios/app/cardalis/id569166179/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/respidog/id6450118361/reviews)** |
| Number of ratings | **245** | 3 |
| Positive reviews | 21.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 22 months |
| Monetization | Free | Free |
| Size | 23 MB | 1 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ceva Sante Animale S.A.](https://appshunter.io/developer/566622266) | [invoxia](https://appshunter.io/developer/413478408) |

## What reviewers say

### Cardalis

[App page](https://appshunter.io/ios/app/cardalis/id569166179)

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.

**Highlights:** Measure resting respiratory rate, Record rate as a graph, Email results to veterinarian, Track heart failure progression, Informational and educational tool

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use interface
- 📊 Clear graph visualization of breathing/heart rate data
- 🔔 Helpful medication and monitoring reminders
- 📧 Ability to email data to veterinarians
- ⏱️ Automatic 30-second timer with calculation

**What reviewers complain about**

- 🐛 Data loss after app updates (critical issue)
- 🐛 App crashes and freezes frequently
- 📧 Email and print functionality broken or removed
- 🔒 Excessive data collection (vet name, email required)
- 🐕 Dog-centric branding excludes cat owners

**Reported bugs**

- Critical data loss during app updates
- App freezes and crashes on launch or navigation
- Email functionality not working or removed
- Print functionality broken or removed
- Notes not saved or retrievable

**Requested features**

- Support for multiple pets/dogs in single app
- Cat-friendly version or pet-neutral branding
- Ability to add notes to all readings (not just high ones)
- Customizable timer intervals (15, 60 seconds)
- Ability to enter past/historical readings


### RespiDog

[App page](https://appshunter.io/ios/app/respidog/id6450118361)

Easily monitor your dog's breathing rate in real-time to help detect early signs of Congestive Heart Failure. Track breaths per minute with simple taps, visualize data over time with graphs, and maintain a health journal for your pet.

**Highlights:** Real-time breathing rate tracking, Visualize respiratory data with graphs, Create a health journal for your dog, Export breathing data in CSV format, Simple tap-to-count interface

**In-app purchases:** none


## Frequently asked questions

### Is Cardalis free?

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

### Is RespiDog free?

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

### Which has better reviews, Cardalis or RespiDog?

RespiDog is rated higher. Cardalis averages 2.3 out of 5 from 245 ratings, while RespiDog averages 5.0 from 3 ratings.

### Do Cardalis or RespiDog have ads?

Neither Cardalis nor RespiDog shows ads.

### Which is updated more often, Cardalis or RespiDog?

Cardalis ships an update every 2 months, and RespiDog every 22 months. Most recently, Cardalis was updated on September 24, 2026 and RespiDog on September 13, 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.*