# 51 Gym vs PetsFirst

The clearest difference is iOS requirement: 51 Gym at 13.4 against PetsFirst's 15.1. On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for 51 Gym against 5.0 for PetsFirst. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

51 Gym ships an update every 3 weeks, PetsFirst monthly. The most recent releases landed on October 20, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 51 Gym | PetsFirst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/51-gym/id1488258135/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/petsfirst/id6467006587/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 29 MB | 71 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [51 GYM CLUB LLC](https://appshunter.io/developer/1488258134) | [Petsfirst Veterinary Clinic LLC](https://appshunter.io/developer/1708022461) |

## What reviewers say

### 51 Gym

[App page](https://appshunter.io/ios/app/51-gym/id1488258135)

Explore a variety of fitness classes like cycling, yoga, and boxing, or book personal training sessions. Discover tips for a healthier lifestyle and build wellness habits on the go. Easily find and reserve activities that suit your preferences.

**Highlights:** Discover fitness, cycling, yoga, and boxing classes, Book personal training sessions, Explore health and wellness tips, Build wellness habits, Search and book classes on-the-go

**Features:** macOS Compatibility

**In-app purchases:** none


### PetsFirst

[App page](https://appshunter.io/ios/app/petsfirst/id6467006587)

Connect with expert veterinarians for personalized pet care and easily schedule appointments at trusted clinics. Share detailed pet health information and enjoy a user-friendly experience for your furry friend's well-being.

**Highlights:** Expert veterinary consultations, Easy appointment scheduling, Locate trusted clinics, Share pet health information, User-friendly interface, Secure in-clinic payments

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

**In-app purchases:** none


## Frequently asked questions

### Is 51 Gym free?

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

### Is PetsFirst free?

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

### Which has better reviews, 51 Gym or PetsFirst?

51 Gym and PetsFirst are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do 51 Gym or PetsFirst have ads?

Neither 51 Gym nor PetsFirst shows ads.

### Which is updated more often, 51 Gym or PetsFirst?

51 Gym ships an update every 3 weeks, and PetsFirst monthly. Most recently, 51 Gym was updated on October 20, 2026 and PetsFirst on October 21, 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.*