# BMS Tool vs SURRON

The clearest difference is review sentiment: BMS Tool at 71% against SURRON's 4%. BMS Tool also leads on rating (3.9 vs 1.8). SURRON's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume, update cadence and device support there is nothing between them.

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

BMS Tool holds the better App Store score, 3.9 against 1.8. Both are backed by a comparable volume of ratings — 7 and 11 respectively. Written reviews point the same way: 71% of BMS Tool's written reviews are positive against 4% of SURRON's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | BMS Tool | SURRON |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (7 ratings)](https://appshunter.io/ios/app/bms-tool/id1511343379/reviews)** | [1.8 (11 ratings)](https://appshunter.io/ios/app/surron/id6450043341/reviews) |
| Number of ratings | 7 | **11** |
| Positive reviews | **71.4% of reviews** | 4.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 9 MB | 118 MB |
| Requires iOS | 15.2 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [Hangzhou Qiulong Technology Co., Ltd.](https://appshunter.io/developer/1264481788) |

## 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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### SURRON

[App page](https://appshunter.io/ios/app/surron/id6450043341)

This platform connects electric bike riders and their bikes, offering a seamless online experience. It aims to build a community for off-road enthusiasts and provide support for an immersive electric biking adventure.

**Highlights:** Bike connectivity platform, End-to-end online experience, Rider and bike connection, Community building, Rider support

**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 SURRON free?

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

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

BMS Tool is rated higher. BMS Tool averages 3.9 out of 5 from 7 ratings, while SURRON averages 1.8 from 11 ratings.

### Do BMS Tool or SURRON have ads?

BMS Tool shows ads; SURRON does not.

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

BMS Tool ships an update every 2 months, and SURRON every 2 months. Most recently, BMS Tool was updated on October 3, 2026 and SURRON on October 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.*