# CTEK Battery Sense vs BM6

The clearest difference is rating: BM6 at 3.3 against CTEK Battery Sense's 2.1. BM6 also leads on review sentiment (46% vs 19%) and update cadence (every 5 weeks vs every 3 months). CTEK Battery Sense's advantage is iOS requirement (12.0 vs 15.6). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

BM6 holds the better App Store score, 3.3 against 2.1. Both are backed by a comparable volume of ratings — 36 and 18 respectively. Written reviews point the same way: 19% of CTEK Battery Sense's written reviews are positive against 46% of BM6's.

CTEK Battery Sense ships an update every 3 months, BM6 every 5 weeks. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | CTEK Battery Sense | BM6 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (36 ratings)](https://appshunter.io/ios/app/ctek-battery-sense/id977976405/reviews) | **[3.3 (18 ratings)](https://appshunter.io/ios/app/bm6/id1561912036/reviews)** |
| Number of ratings | **36** | 18 |
| Positive reviews | 19.3% of reviews | **45.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 18 MB | 64 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [CTEK Sweden AB](https://appshunter.io/developer/598573012) | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) |

## What reviewers say

### CTEK Battery Sense

[App page](https://appshunter.io/ios/app/ctek-battery-sense/id977976405)

Monitor your vehicle battery's health and performance directly from your smartphone. Get instant readings, continuous charge monitoring, and low charge alerts to prevent breakdowns and ensure you're always ready to drive.

**Highlights:** Continuous battery charge monitoring, Instant voltage and temperature readings, Bluetooth syncing, Low charge alerts, Zoomable graph data, Manual capacity input

**In-app purchases:** none

**What reviewers like**

- ⭐ Great product
- 🚀 Works great
- 👍 Convenient to use
- 📊 Graphs battery status

**What reviewers complain about**

- 🐛 Connectivity issues
- 🔌 Unreliable connection
- 🕰️ Slow to update
- 🔍 Inaccurate readings
- 💤 App crashes/freezes

**Reported bugs**

- App freezes on details page
- Incorrect temperature/voltage labeling
- Deleted all connected devices after update
- Fails to connect after iOS updates

**Requested features**

- Improved voltage/temperature graph scaling
- Export data functionality
- Automatic reconnection when in range
- Battery type detection (AGM/flooded)
- Faster updates and real-time monitoring


### BM6

[App page](https://appshunter.io/ios/app/bm6/id1561912036)

Monitor your car's battery in real-time via Bluetooth. This app tests starting and charging systems, records engine start/stop times, and displays all data on your mobile device for easy management of your vehicle's battery power.

**Highlights:** Real-time battery voltage monitoring, Starting system voltage test, Charging system voltage test, Records engine start/stop times, Bluetooth data display, Vehicle battery power management

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is CTEK Battery Sense free?

CTEK Battery Sense is free to download, with no in-app purchases.

### Is BM6 free?

BM6 is free to download, with no in-app purchases.

### Which has better reviews, CTEK Battery Sense or BM6?

BM6 is rated higher. CTEK Battery Sense averages 2.1 out of 5 from 36 ratings, while BM6 averages 3.3 from 18 ratings.

### Do CTEK Battery Sense or BM6 have ads?

Neither CTEK Battery Sense nor BM6 shows ads.

### Which is updated more often, CTEK Battery Sense or BM6?

CTEK Battery Sense ships an update every 3 months, and BM6 every 5 weeks. Most recently, CTEK Battery Sense was updated on November 1, 2026 and BM6 on November 7, 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.*