# BN vs K

The clearest difference is update cadence: BN at every 3 months against K's every 21 months. On price, ads, 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.

BN ships an update every 3 months, K every 21 months. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | BN | K |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.9K ratings)](https://appshunter.io/ios/app/bn-link-smart/id1543390446/reviews)** | — |
| Number of ratings | **1.9K** | — |
| Positive reviews | 18.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 21 months |
| Monetization | Free | — |
| Size | 164 MB | 230 MB |
| Requires iOS | **12.2** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [CENTURY PRODUCTS INC](https://appshunter.io/developer/1543190289) | [Guangdong KSTE lighting industry Co.,Ltd](https://appshunter.io/developer/1604704962) |

## What reviewers say

### BN

[App page](https://appshunter.io/ios/app/bn-link-smart/id1543390446)

Control your home appliances remotely from anywhere using your smartphone. Manage multiple devices simultaneously, set timers for automated functions, and easily share access with family members for convenient smart home management.

**Highlights:** Remote appliance control, Simultaneous multi-device control, Customizable timers, Family device sharing, Quick device connection

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to set up
- 🚀 Reliable performance
- 💡 Customizable schedules

**What reviewers complain about**

- 🐛 Connectivity issues
- 🔒 Privacy concerns
- 🔍 Confusing app interface
- 💸 Ads and notifications

**Reported bugs**

- Devices randomly disconnecting
- Schedules not working as expected
- App crashes and freezes

**Requested features**

- Dark mode option
- Improved scheduling features
- Better integration with smart home platforms


### K

[App page](https://appshunter.io/ios/app/k-smart/id1604704960)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BN free?

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

### Is K free?

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

### Do BN or K have ads?

Neither BN nor K shows ads.

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

BN ships an update every 3 months, and K every 21 months. Most recently, BN was updated on October 9, 2026 and K on October 8, 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.*