# EnerKey vs Haojiang Controller Bluetooth

The clearest difference is review sentiment: EnerKey at 75% against Haojiang Controller Bluetooth's 33%. Haojiang Controller Bluetooth's advantage is update cadence (monthly vs every 2 months) and iOS requirement (9.0 vs 12.0). 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.

EnerKey ships an update every 2 months, Haojiang Controller Bluetooth monthly. The most recent releases landed on June 1, 2026 and June 24, 2026 respectively.

## The numbers

| Metric | EnerKey | Haojiang Controller Bluetooth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/enerkey/id6447932138/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **75.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 31 MB | 25 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Jinwei Power Source Technology Co., Ltd](https://appshunter.io/developer/1683049152) | [佩 袁](https://appshunter.io/developer/1219221036) |

## What reviewers say

### EnerKey

[App page](https://appshunter.io/ios/app/enerkey/id6447932138)

Monitor and control your lithium battery system in real-time. View current status, historical data, and adjust protective parameters to ensure safe operation. Receive instant alerts for any abnormal conditions.

**Highlights:** Real-time battery monitoring, Historical data inquiry, Parameter setting, Alarm notifications, Voltage, current, and temperature display

**Features:** macOS Compatibility

**In-app purchases:** none


### Haojiang Controller Bluetooth

[App page](https://appshunter.io/ios/app/haojiang-controller-bluetooth/id6450500931)

This utility app offers intelligent control for electric vehicles, allowing users to monitor vehicle status and customize controller port functions. It also provides access to cloud-based and historical vehicle models for quick retrieval.

**Highlights:** Electric vehicle riding mode, Intelligent control, Vehicle status monitoring, Customizable controller ports, Cloud-based vehicle models, Historical vehicle model access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EnerKey free?

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

### Is Haojiang Controller Bluetooth free?

Haojiang Controller Bluetooth is free to download, with no in-app purchases.

### Do EnerKey or Haojiang Controller Bluetooth have ads?

Neither EnerKey nor Haojiang Controller Bluetooth shows ads.

### Which is updated more often, EnerKey or Haojiang Controller Bluetooth?

EnerKey ships an update every 2 months, and Haojiang Controller Bluetooth monthly. Most recently, EnerKey was updated on June 1, 2026 and Haojiang Controller Bluetooth on June 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.*