# Petzey vs Prelude ePRO

The clearest difference is rating: Prelude ePRO at 5.0 against Petzey's 4.2. Prelude ePRO also leads on monetization model (free vs ad-supported). Petzey's advantage is ratings volume (77 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Prelude ePRO holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Petzey has 77 ratings behind it against 1, so its average is the more settled of the two.

Petzey ships an update every 3 weeks, Prelude ePRO every 11 days. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Petzey | Prelude ePRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (77 ratings)](https://appshunter.io/ios/app/petzey/id1483063201/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prelude-epro/id1623896422/reviews)** |
| Number of ratings | **77** | 1 |
| Positive reviews | 74.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Monetization | Ad-supported | **Free** |
| Size | 111 MB | 32 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Petzey Technology, Inc.](https://appshunter.io/developer/1483063200) | [Prelude Dynamics, LLC](https://appshunter.io/developer/1623896424) |

## What reviewers say

### Petzey

[App page](https://appshunter.io/ios/app/petzey/id1483063201)

Connect with licensed veterinarians for real-time advice on your pet's health through video or chat. Find local clinics and hospitals when in-person care is needed, offering peace of mind for pet owners.

**Highlights:** On-demand video/chat vet consultations, Real-time pet health advice, Find local vet clinics, Peace of mind for pet owners

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

**In-app purchases:** none


### Prelude ePRO

[App page](https://appshunter.io/ios/app/prelude-epro/id1623896422)

This app allows clinical trial participants to submit data directly to the electronic data capture system. It removes the need for in-person visits, ensuring continuous data collection from participants.

**Highlights:** Direct data input, Electronic data capture integration, Eliminates on-site visits, Continuous data collection, Mobile clinical trial management

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Petzey free?

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

### Is Prelude ePRO free?

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

### Which has better reviews, Petzey or Prelude ePRO?

Prelude ePRO is rated higher. Petzey averages 4.2 out of 5 from 77 ratings, while Prelude ePRO averages 5.0 from 1 ratings.

### Do Petzey or Prelude ePRO have ads?

Neither Petzey nor Prelude ePRO shows ads.

### Which is updated more often, Petzey or Prelude ePRO?

Petzey ships an update every 3 weeks, and Prelude ePRO every 11 days. Most recently, Petzey was updated on October 26, 2026 and Prelude ePRO on October 6, 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.*