# in动 vs K动

The clearest difference is in-app purchases: in动 at none against K动's 7. K动's advantage is update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. K动 sells 7 in-app purchases, starting at $8.49 per month. in动 asks for nothing beyond the download.

in动 ships an update every 3 weeks, K动 weekly. The most recent releases landed on June 3, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | in动 | K动 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/in/id1566486191/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 79 MB | 87 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Yichang Yin'ai Technology Co., Ltd.](https://appshunter.io/developer/1566486193) | [CCK Tech Co.,LTD](https://appshunter.io/developer/1632134120) |

## What reviewers say

### in动

[App page](https://appshunter.io/ios/app/in/id1566486191)

This app offers scientific pelvic floor muscle training, a community for discussing intimacy and fitness, and expert reviews of adult products. It aims to improve sexual experiences and aid postpartum recovery for women.

**Highlights:** Scientific pelvic floor muscle training, Community for discussion and sharing, Expert reviews of adult products, Postpartum recovery support, Shopping for reviewed products

**Features:** macOS Compatibility

**In-app purchases:** none


### K动

[App page](https://appshunter.io/ios/app/k-and-pc/id1639318760)

This app offers personalized pelvic floor muscle training programs. It provides detailed exercise breakdowns and reminders to help users consistently improve muscle control and overall body function. Users can access professional courses and scientific guidance anytime, anywhere.

**Highlights:** Personalized training plans, Professional pelvic floor muscle courses, Detailed exercise breakdowns, Progress tracking reminders, Voice guidance for workouts, Scientific exercise methods

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| K动-月订阅会员 | $8.49 | per month |
| K动-季订阅会员 | $14.49 | per 3 months |
| K动-年订阅会员 | $28.99 | per year |
| K动-月度会员 | $9.99 | one-time |
| K动-季度会员 | $14.99 | one-time |
| K动-年度会员-优惠 | $23.99 | one-time |
| K动-年度会员 | $29.99 | one-time |


## Frequently asked questions

### Is in动 free?

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

### Is K动 free?

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

### Do in动 or K动 have ads?

Neither in动 nor K动 shows ads.

### Which is updated more often, in动 or K动?

in动 ships an update every 3 weeks, and K动 weekly. Most recently, in动 was updated on June 3, 2026 and K动 on September 10, 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.*