# K vs Gym Rest Timer

The clearest difference is ads: K at none against Gym Rest Timer's shown. Gym Rest Timer's advantage is update cadence (every 6 days vs every 6 months) and iOS requirement (13.0 vs 16.0). On price, 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.

K ships an update every 6 months, Gym Rest Timer every 6 days. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | K | Gym Rest Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 6 days** |
| Size | 1 MB | 63 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [TENGA Healthcare Inc.](https://appshunter.io/developer/1360244365) | [Genki Suzuki](https://appshunter.io/developer/1853829095) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-gel-support/id6472642388)

**Features:** Vision Pro support

**In-app purchases:** none


### Gym Rest Timer

[App page](https://appshunter.io/ios/app/gym-rest-timer/id6755429151)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is K free?

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

### Is Gym Rest Timer free?

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

### Do K or Gym Rest Timer have ads?

Gym Rest Timer shows ads; K does not.

### Which is updated more often, K or Gym Rest Timer?

K ships an update every 6 months, and Gym Rest Timer every 6 days. Most recently, K was updated on October 13, 2026 and Gym Rest Timer on October 16, 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.*