# Compass Map Barometer vs Xiaoxiang BMS

The clearest difference is rating: Compass Map Barometer at 4.4 against Xiaoxiang BMS's 3.6. Compass Map Barometer also leads on in-app purchases (none vs 1) and iOS requirement (13 vs 16.0). Xiaoxiang BMS's advantage is update cadence (every 4 weeks vs every 7 months) and review sentiment (55% vs 38%). On price, ratings volume, ads and device support there is nothing between them.

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

Compass Map Barometer holds the better App Store score, 4.4 against 3.6. Both are backed by a comparable volume of ratings — 130 and 66 respectively. Written reviews complicate that: 38% of Compass Map Barometer's written reviews are positive against 55% of Xiaoxiang BMS's, so the app with the better star average is not the one people write more warmly about.

Compass Map Barometer ships an update every 7 months, Xiaoxiang BMS every 4 weeks. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Compass Map Barometer | Xiaoxiang BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (130 ratings)](https://appshunter.io/ios/app/compass-map-barometer/id553118179/reviews)** | [3.6 (66 ratings)](https://appshunter.io/ios/app/xiaoxiang-bms/id1375405426/reviews) |
| Number of ratings | **130** | 66 |
| Positive reviews | 38.5% of reviews | **54.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 7 months | **Every 4 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 10 MB | 10 MB |
| Requires iOS | **13** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [e77code GmbH](https://appshunter.io/developer/1375405425) |

## What reviewers say

### Compass Map Barometer

[App page](https://appshunter.io/ios/app/compass-map-barometer/id553118179)

This application provides a digital compass to easily identify cardinal directions and any arbitrary direction. It offers the flexibility to switch between magnetic and true north, and includes a map rotation feature. A barometer function is also available on compatible devices.

**Highlights:** Electronic compass, Magnetic and true north modes, Map rotation, Barometer function, Designates cardinal directions

**Features:** Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Compass Map Barometer free?

Compass Map Barometer is free to download, with no in-app purchases.

### Is Xiaoxiang BMS free?

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

### Which has better reviews, Compass Map Barometer or Xiaoxiang BMS?

Compass Map Barometer is rated higher. Compass Map Barometer averages 4.4 out of 5 from 130 ratings, while Xiaoxiang BMS averages 3.6 from 66 ratings.

### Do Compass Map Barometer or Xiaoxiang BMS have ads?

Both Compass Map Barometer and Xiaoxiang BMS show ads.

### Which is updated more often, Compass Map Barometer or Xiaoxiang BMS?

Compass Map Barometer ships an update every 7 months, and Xiaoxiang BMS every 4 weeks. Most recently, Compass Map Barometer was updated on October 16, 2026 and Xiaoxiang BMS on October 15, 2026.

---

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