# BMS Tool vs PowerMon X

The clearest difference is in-app purchases: PowerMon X at none against BMS Tool's 1. PowerMon X also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.9 for BMS Tool against 4.0 for PowerMon X. Both are backed by a comparable volume of ratings — 7 and 5 respectively. Written reviews are what separate them: 71% of BMS Tool's written reviews are positive against 67% of PowerMon X's.

BMS Tool ships an update every 2 months, PowerMon X every 3 weeks. The most recent releases landed on October 24, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | BMS Tool | PowerMon X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/bms-tool/id1511343379/reviews) | **[4.0 (5 ratings)](https://appshunter.io/ios/app/powermon-x/id1594717448/reviews)** |
| Number of ratings | **7** | 5 |
| Positive reviews | **71.4% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 10 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [Thornwave Labs Inc](https://appshunter.io/developer/1289006248) |

## 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 | $1.99 | one-time |


### PowerMon X

[App page](https://appshunter.io/ios/app/powermon-x/id1594717448)

Monitor battery levels and performance of compatible devices via Bluetooth. View redesigned log data charts and access improved screens. Requires a physical PowerMon device.

**Highlights:** Redesigned log data charts, Improved screens, Compatibility with newest devices, Compatibility with new firmware, Bluetooth monitoring, Requires physical device

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BMS Tool free?

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

### Is PowerMon X free?

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

### Which has better reviews, BMS Tool or PowerMon X?

PowerMon X is rated higher. BMS Tool averages 3.9 out of 5 from 7 ratings, while PowerMon X averages 4.0 from 5 ratings.

### Do BMS Tool or PowerMon X have ads?

BMS Tool shows ads; PowerMon X does not.

### Which is updated more often, BMS Tool or PowerMon X?

BMS Tool ships an update every 2 months, and PowerMon X every 3 weeks. Most recently, BMS Tool was updated on October 24, 2026 and PowerMon X on September 29, 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.*