# BMS Tool vs EMBTuner

The clearest difference is review sentiment: BMS Tool at 71% against EMBTuner's 0%. EMBTuner's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume, device support and iOS requirement there is nothing between them.

Both are free to download. BMS Tool sells 1 one-off in-app purchase. EMBTuner asks for nothing beyond the download.

EMBTuner holds the better App Store score, 4.2 against 3.9. Both are backed by a comparable volume of ratings — 7 and 13 respectively. Written reviews complicate that: 71% of BMS Tool's written reviews are positive against 0% of EMBTuner's, so the app with the better star average is not the one people write more warmly about.

BMS Tool ships an update every 2 months, EMBTuner fortnightly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | BMS Tool | EMBTuner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/bms-tool/id1511343379/reviews) | **[4.2 (13 ratings)](https://appshunter.io/ios/app/embtuner/id1605550971/reviews)** |
| Number of ratings | 7 | **13** |
| Positive reviews | **71.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 58 MB |
| Requires iOS | **15.0** | 15.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [Riley Houston](https://appshunter.io/developer/1605550973) |

## What reviewers say

### BMS Tool

[App page](https://appshunter.io/ios/app/bms-tool/id1511343379)

Monitor your battery management systems via Bluetooth. Supports multiple BMS types including Liontron, XiaoXiang, ANT, and Wattstunde. Offers a screen always-on mode and macOS compatibility.

**Highlights:** Screen Always ON mode, Multiple BMS support, Liontron BMS read-only, XiaoXiang BMS read-only, ANT BMS read-only, Wattstunde LiFePo4 read-only, macOS support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### EMBTuner

[App page](https://appshunter.io/ios/app/embtuner/id1605550971)

This utility app provides advanced control for specific ASI controllers tuned by E-Moto Bros. Users can access special parameters for calibration, saving settings to flash memory, and throttle adjustments.

**Highlights:** Controller calibration, Save to flash functionality, Throttle tuning, Extended parameter access, ASI controller support

**In-app purchases:** none


## Frequently asked questions

### Is BMS Tool free?

BMS Tool is free to download, with in-app purchases available.

### Is EMBTuner free?

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

### Which has better reviews, BMS Tool or EMBTuner?

EMBTuner is rated higher. BMS Tool averages 3.9 out of 5 from 7 ratings, while EMBTuner averages 4.2 from 13 ratings.

### Do BMS Tool or EMBTuner have ads?

BMS Tool shows ads; EMBTuner does not.

### Which is updated more often, BMS Tool or EMBTuner?

BMS Tool ships an update every 2 months, and EMBTuner fortnightly. Most recently, BMS Tool was updated on October 29, 2026 and EMBTuner on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*