# Xiaoxiang BMS vs Register 2

The clearest difference is rating: Register 2 at 5.0 against Xiaoxiang BMS's 3.6. Register 2 also leads on in-app purchases (none vs 1) and ads (none vs shown). Xiaoxiang BMS's advantage is ratings volume (66 vs 1). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Xiaoxiang BMS sells 1 one-off in-app purchase. Register 2 asks for nothing beyond the download.

Register 2 holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Xiaoxiang BMS has 66 ratings behind it against 1, so its average is the more settled of the two.

Xiaoxiang BMS ships an update every 4 weeks, Register 2 every 3 weeks. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Xiaoxiang BMS | Register 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (66 ratings)](https://appshunter.io/ios/app/xiaoxiang-bms/id1375405426/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/register-2/id6444576080/reviews)** |
| Number of ratings | **66** | 1 |
| Positive reviews | 54.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 87 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [e77code GmbH](https://appshunter.io/developer/1375405425) | [Singenuity, LLC](https://appshunter.io/developer/1069760342) |

## What reviewers say

### Xiaoxiang BMS

[App page](https://appshunter.io/ios/app/xiaoxiang-bms/id1375405426)

Monitor and manage your Bluetooth-enabled battery management systems (BMS) for Li-Ion and LiFePo4 packs. Track cell voltage, capacity, current, and temperature. Switch battery outputs on/off and configure settings remotely.

**Highlights:** Monitor cell voltage, capacity, current, and temperature, Switch battery output on/off, Calibrate cell voltage and current, Configure balancer and BMS capacity, Change Bluetooth advertised name, Unlock hardware protected BMS (firmware v20+), Set PIN code for BMS access

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $7.99 | one-time |


### Register 2

[App page](https://appshunter.io/ios/app/register-2/id6444576080)

Manage and sell activities, waivers, and merchandise with this next-generation registration platform. Streamline your operations and enhance customer engagement.

**Highlights:** Activity sales and management, Waiver management, Merchandise sales, Next-generation platform, Streamlined operations

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Xiaoxiang BMS free?

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

### Is Register 2 free?

Register 2 is free to download, with no in-app purchases.

### Which has better reviews, Xiaoxiang BMS or Register 2?

Register 2 is rated higher. Xiaoxiang BMS averages 3.6 out of 5 from 66 ratings, while Register 2 averages 5.0 from 1 ratings.

### Do Xiaoxiang BMS or Register 2 have ads?

Xiaoxiang BMS shows ads; Register 2 does not.

### Which is updated more often, Xiaoxiang BMS or Register 2?

Xiaoxiang BMS ships an update every 4 weeks, and Register 2 every 3 weeks. Most recently, Xiaoxiang BMS was updated on October 15, 2026 and Register 2 on September 30, 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.*