# Pro BMS vs Spot Authenticator

The clearest difference is in-app purchases: Pro BMS at none against Spot Authenticator's 1. Pro BMS also leads on iOS requirement (15.6 vs 18.0). Spot Authenticator's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

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

Pro BMS ships an update every 2 months, Spot Authenticator weekly. The most recent releases landed on September 27, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Pro BMS | Spot Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/pro-bms/id6474855560/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 35 MB | 5 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [优贤 刘](https://appshunter.io/developer/6777862714) |

## What reviewers say

### Pro BMS

[App page](https://appshunter.io/ios/app/pro-bms/id6474855560)

This utility app measures and displays real-time battery parameters like voltage, current, and capacity. It offers customizable protection functions and allows for voltage/current curve export. Control and monitoring are available via a mobile app.

**Highlights:** Real-time voltage and current measurement, Power, charge, and discharge capacity monitoring, Customizable protection functions (overvoltage, overcurrent, etc.), Color LCD display of comprehensive data, Voltage and current curve display and export, Mobile app control and communication

**Features:** macOS Compatibility

**In-app purchases:** none


### Spot Authenticator

[App page](https://appshunter.io/ios/app/spot-authenticator/id6787064913)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $2.99 | one-time |


## Frequently asked questions

### Is Pro BMS free?

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

### Is Spot Authenticator free?

Spot Authenticator is free to download, with in-app purchases available.

### Do Pro BMS or Spot Authenticator have ads?

Neither Pro BMS nor Spot Authenticator shows ads.

### Which is updated more often, Pro BMS or Spot Authenticator?

Pro BMS ships an update every 2 months, and Spot Authenticator weekly. Most recently, Pro BMS was updated on September 27, 2026 and Spot Authenticator on October 4, 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.*