# City Zero Gym vs Core Lab Wellness

The clearest difference is ads: City Zero Gym at none against Core Lab Wellness's shown. City Zero Gym also leads on monetization model (free vs ad-supported). Core Lab Wellness's advantage is update cadence (every 3 weeks vs every 18 months) and ratings volume (57 vs 1). On price, rating, in-app purchases and device support 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 City Zero Gym against 5.0 for Core Lab Wellness. That said, the two scores are not equally well evidenced: Core Lab Wellness has 57 ratings behind it against 1, so its average is the more settled of the two.

City Zero Gym ships an update every 18 months, Core Lab Wellness every 3 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | City Zero Gym | Core Lab Wellness |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/city-zero-gym/id6447638334/reviews)** | [5.0 (57 ratings)](https://appshunter.io/ios/app/core-lab-wellness/id6535653533/reviews) |
| Number of ratings | 1 | **57** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 18 months | **Every 3 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 32 MB | 36 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [City Zero LLC](https://appshunter.io/developer/1580453177) | [CORE LAB LLC](https://appshunter.io/developer/1633698318) |

## What reviewers say

### City Zero Gym

[App page](https://appshunter.io/ios/app/city-zero-gym/id6447638334)

Easily book fitness classes, manage your membership, and stay updated on services. Make reservations, join waitlists, and purchase class packages directly from your device.

**Highlights:** Book classes, Manage reservations, Join waitlists, Purchase class packages, Check profile and membership, View latest products and services

**Features:** macOS Compatibility

**In-app purchases:** none


### Core Lab Wellness

[App page](https://appshunter.io/ios/app/core-lab-wellness/id6535653533)

Easily book fitness classes and manage your account with this studio's dedicated application. View schedules, make reservations, and stay updated on studio offerings.

**Highlights:** Class booking, View schedule, Account management, Studio updates

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is City Zero Gym free?

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

### Is Core Lab Wellness free?

Core Lab Wellness is free to download, with no in-app purchases.

### Which has better reviews, City Zero Gym or Core Lab Wellness?

City Zero Gym is rated higher. City Zero Gym averages 5.0 out of 5 from 1 ratings, while Core Lab Wellness averages 5.0 from 57 ratings.

### Do City Zero Gym or Core Lab Wellness have ads?

Core Lab Wellness shows ads; City Zero Gym does not.

### Which is updated more often, City Zero Gym or Core Lab Wellness?

City Zero Gym ships an update every 18 months, and Core Lab Wellness every 3 weeks. Most recently, City Zero Gym was updated on October 30, 2026 and Core Lab Wellness on October 24, 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.*