# SubZero Gym vs GymRx

The clearest difference is update cadence: SubZero Gym at every 3 days against GymRx's every 3 weeks. GymRx's advantage is iOS requirement (15.1 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. SubZero Gym sells 10 in-app purchases, starting at $3.99 per month and GymRx sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

SubZero Gym ships an update every 3 days, GymRx every 3 weeks. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SubZero Gym | GymRx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/gymrx-workout-tracker/id6759118621/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | — | Freemium |
| Size | 92 MB | 68 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [ShadowPing LLC](https://appshunter.io/developer/1826310023) | [Garrett Coughlin](https://appshunter.io/developer/1787930627) |

## What reviewers say

### SubZero Gym

[App page](https://appshunter.io/ios/app/subzero-gym/id6755252688)

**Features:** Family Sharing, Apple Watch app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Monthly | $3.99 | per month |
| Pro Monthly | $7.99 | per month |
| Elite Monthly | $14.99 | per month |
| Pro+ Monthly | $15.99 | per month |
| Elite+ Monthly | $29.99 | per month |
| Basic Annual | $39.99 | per year |
| Pro Annual | $79.99 | per year |
| Elite Annual | $149.99 | per year |
| Pro+ Annual | $159.99 | per year |
| Elite+ Annual | $299.99 | per year |


### GymRx

[App page](https://appshunter.io/ios/app/gymrx-workout-tracker/id6759118621)

This app helps serious lifters train smarter by logging exercises, sets, reps, and weight. It offers an AI coach for real-time suggestions, a comprehensive exercise library with videos, and detailed progress tracking to help you hit new personal records.

**Highlights:** Log exercises, sets, reps, weight, and RIR, AI coach for real-time weight and rep suggestions, 264 exercise library with video demonstrations, Automatic personal record detection and analytics, Syncs with Apple HealthKit, Import from other popular workout apps, Offline-first functionality

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GymRx Premium | $3.99 | per month |
| Cascade Fitness Bundle | $6.99 | per month |
| GymRx Premium | $39.99 | per year |
| Cascade Fitness Bundle | $49.99 | per year |


## Frequently asked questions

### Is SubZero Gym free?

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

### Is GymRx free?

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

### Do SubZero Gym or GymRx have ads?

Neither SubZero Gym nor GymRx shows ads.

### Which is updated more often, SubZero Gym or GymRx?

SubZero Gym ships an update every 3 days, and GymRx every 3 weeks. Most recently, SubZero Gym was updated on October 5, 2026 and GymRx on October 8, 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.*