# K vs yoctoLife

The clearest difference is update cadence: yoctoLife at every 3 months against K's every 6 months. yoctoLife also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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, yoctoLife every 3 months. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | K | yoctoLife |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Size | 1 MB | 90 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [TENGA Healthcare Inc.](https://appshunter.io/developer/1360244365) | [YOCTO CO.,LTD.](https://appshunter.io/developer/381992814) |

## What reviewers say

### K

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

**Features:** Vision Pro support

**In-app purchases:** none


### yoctoLife

[App page](https://appshunter.io/ios/app/yoctolife/id6504076415)

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

**In-app purchases:** none


## Frequently asked questions

### Is K free?

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

### Is yoctoLife free?

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

### Do K or yoctoLife have ads?

Neither K nor yoctoLife shows ads.

### Which is updated more often, K or yoctoLife?

K ships an update every 6 months, and yoctoLife every 3 months. Most recently, K was updated on October 25, 2026 and yoctoLife on October 30, 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.*