# SubZero Gym vs Koar

SubZero Gym and Koar are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. SubZero Gym sells 10 in-app purchases, starting at $3.99 per month and Koar sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

SubZero Gym ships an update every 3 days, Koar every 5 days. Both last shipped on October 5, 2026.

## The numbers

| Metric | SubZero Gym | Koar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 days |
| Size | 92 MB | 150 MB |
| Requires iOS | 18.6 | **18** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [ShadowPing LLC](https://appshunter.io/developer/1826310023) | [Aric Malka](https://appshunter.io/developer/1886770639) |

## 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 |


### Koar

[App page](https://appshunter.io/ios/app/koar-strength-training/id6760911936)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly | $69.99 | per year |
| Lifetime Access | $179.00 | one-time |


## Frequently asked questions

### Is SubZero Gym free?

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

### Is Koar free?

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

### Do SubZero Gym or Koar have ads?

Neither SubZero Gym nor Koar shows ads.

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

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