# 123SmartBMS vs KH

The clearest difference is review sentiment: 123SmartBMS at 67% against KH's 0%. KH's advantage is update cadence (every 5 days vs monthly) and iOS requirement (9.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

123SmartBMS ships an update monthly, KH every 5 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 123SmartBMS | KH |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (21 ratings)](https://appshunter.io/ios/app/123smartbms/id988285264/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free | Free |
| Size | 190 MB | 32 MB |
| Requires iOS | 16.0 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Albertronic B.V.](https://appshunter.io/developer/890882604) | [Hangzhou Junce Instruments Co., Ltd.](https://appshunter.io/developer/1535583983) |

## What reviewers say

### 123SmartBMS

[App page](https://appshunter.io/ios/app/123smartbms/id988285264)

This app monitors and manages lithium battery packs, ensuring optimal condition and extended lifespan. It tracks cell voltages, temperatures, and currents, while balancing cells during charging. Connect via Bluetooth to view real-time battery status and control charging/discharging.

**Highlights:** Monitors cell voltages and temperatures, Tracks in- and outgoing currents, Balances cells during charging, Bluetooth connectivity for real-time data, Controls charge/discharge signals, Extends battery pack lifespan

**Features:** macOS Compatibility

**In-app purchases:** none


### KH

[App page](https://appshunter.io/ios/app/kh-f/id1665076881)

This utility measures electrical parameters like voltage, current, and power. It offers real-time monitoring of battery capacity and includes advanced protection functions. The app also supports data export and remote control via a mobile app or host computer.

**Highlights:** Measures voltage, current, power, and capacity, Real-time battery monitoring, Over-voltage, under-voltage, and over-current protection, Voltage and current curve display, Data export function, Mobile app and host computer control, Real-time firmware updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 123SmartBMS free?

123SmartBMS is free to download, with no in-app purchases.

### Is KH free?

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

### Do 123SmartBMS or KH have ads?

Neither 123SmartBMS nor KH shows ads.

### Which is updated more often, 123SmartBMS or KH?

123SmartBMS ships an update monthly, and KH every 5 days. Most recently, 123SmartBMS was updated on October 24, 2026 and KH on October 9, 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.*