# LNDU KEY vs Blackview Security

LNDU KEY and Blackview Security 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. Neither carries in-app purchases, so what you see is what you pay.

LNDU KEY ships an update every 3 months, Blackview Security every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | LNDU KEY | Blackview Security |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.3 (15 ratings)](https://appshunter.io/ios/app/blackview-security/id6476266461/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 13 MB | 82 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Lingdu Auto Electronics Co., Ltd.](https://appshunter.io/developer/1727524224) | [Shenzhen DOKE Electronic Co., Ltd](https://appshunter.io/developer/1726335764) |

## What reviewers say

### LNDU KEY

[App page](https://appshunter.io/ios/app/lndu-key/id1617977703)

**In-app purchases:** none


### Blackview Security

[App page](https://appshunter.io/ios/app/blackview-security/id6476266461)

Enhance home security with a smart door lock system. Monitor your doorstep remotely via a high-definition camera, unlock with advanced fingerprint recognition, or use a secure password. Enjoy convenient and reliable access control for your household.

**Highlights:** HD camera for remote doorstep monitoring, Advanced fingerprint recognition for keyless entry, Password functionality for family and guests, Real-time security status updates, Convenient remote access control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LNDU KEY free?

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

### Is Blackview Security free?

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

### Do LNDU KEY or Blackview Security have ads?

Neither LNDU KEY nor Blackview Security shows ads.

### Which is updated more often, LNDU KEY or Blackview Security?

LNDU KEY ships an update every 3 months, and Blackview Security every 2 months. Most recently, LNDU KEY was updated on October 25, 2026 and Blackview Security on October 24, 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.*