# KD Lock vs 心愉

The clearest difference is in-app purchases: KD Lock at none against 心愉's 6. KD Lock also leads on iOS requirement (12.0 vs 15). 心愉's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. 心愉 sells 6 in-app purchases, starting at $6.99 per month. KD Lock asks for nothing beyond the download.

KD Lock ships an update every 6 weeks, 心愉 every 2 weeks. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | KD Lock | 心愉 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id6757914380/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Size | 26 MB | 199 MB |
| Requires iOS | **12.0** | 15 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Guangzhou Kuodao Internet of Things Technology Co., Ltd.](https://appshunter.io/developer/1196125665) | [北京智能伴侣科技有限公司](https://appshunter.io/developer/1869570017) |

## What reviewers say

### KD Lock

[App page](https://appshunter.io/ios/app/kd-lock/id1196125666)

**Features:** macOS Compatibility

**In-app purchases:** none


### 心愉

[App page](https://appshunter.io/ios/app/id6757914380)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度普通会员 | $6.99 | per month |
| 季度普通会员 | $14.99 | per 3 months |
| 月度高级会员 | $14.99 | per month |
| 季度高级会员 | $29.99 | per 3 months |
| 年度普通会员 | $39.99 | per year |
| 年度高级会员 | $79.99 | per year |


## Frequently asked questions

### Is KD Lock free?

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

### Is 心愉 free?

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

### Do KD Lock or 心愉 have ads?

Neither KD Lock nor 心愉 shows ads.

### Which is updated more often, KD Lock or 心愉?

KD Lock ships an update every 6 weeks, and 心愉 every 2 weeks. Most recently, KD Lock was updated on October 29, 2026 and 心愉 on October 31, 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.*