# Cardalis vs ZenPower

The clearest difference is rating: Cardalis at 2.3 against ZenPower's 1.0. Cardalis also leads on in-app purchases (none vs 1) and ratings volume (260 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ZenPower sells 1 in-app purchase, starting at $3.99 per year. Cardalis asks for nothing beyond the download.

Cardalis holds the better App Store score, 2.3 against 1.0. That said, the two scores are not equally well evidenced: Cardalis has 260 ratings behind it against 1, 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 0% of ZenPower's.

Cardalis ships an update every 6 weeks, ZenPower every 4 months. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Cardalis | ZenPower |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (260 ratings)](https://appshunter.io/ios/app/cardalis/id569166179/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/zenpower/id1616686764/reviews) |
| Number of ratings | **260** | 1 |
| Positive reviews | **20.9% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | **Free** | Subscription |
| Size | 22 MB | 277 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ceva Sante Animale S.A.](https://appshunter.io/developer/566622266) | [Zenpower Limited](https://appshunter.io/developer/1616686766) |

## 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


### ZenPower

[App page](https://appshunter.io/ios/app/zenpower/id1616686764)

This app helps users manage negative emotions like stress, anxiety, and anger using a blend of Eastern medicine and modern psychological techniques. It offers quick, effective sessions and support tracks to enhance well-being.

**Highlights:** Minimize negative emotions, Control cravings and urges, Sessions under 5 minutes, Hybrid Eastern/Western techniques, MP3 support tracks, Offline access

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $3.99 | per year |


## Frequently asked questions

### Is Cardalis free?

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

### Is ZenPower free?

ZenPower is free to download, with in-app purchases available.

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

Cardalis is rated higher. Cardalis averages 2.3 out of 5 from 260 ratings, while ZenPower averages 1.0 from 1 ratings.

### Do Cardalis or ZenPower have ads?

Neither Cardalis nor ZenPower shows ads.

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

Cardalis ships an update every 6 weeks, and ZenPower every 4 months. Most recently, Cardalis was updated on October 21, 2026 and ZenPower on October 19, 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.*