# Pro BMS vs Spark Number

The clearest difference is rating: Spark Number at 5.0 against Pro BMS's 1.0. Spark Number also leads on update cadence (every 2 weeks vs every 2 months). Pro BMS's advantage is in-app purchases (none vs 4). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Spark Number sells 4 one-off in-app purchases. Pro BMS asks for nothing beyond the download.

Spark Number holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Pro BMS ships an update every 2 months, Spark Number every 2 weeks. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Pro BMS | Spark Number |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/pro-bms/id6474855560/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spark-number/id6763991053/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 35 MB | 4 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [Yellow Mountain Technology, Inc.](https://appshunter.io/developer/1113231522) |

## 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


### Spark Number

[App page](https://appshunter.io/ios/app/spark-number/id6763991053)

Create personalized calculators for any task using simple text prompts. This app generates custom tools with native interfaces for mortgage calculations, recipes, discounts, and more, supporting advanced formulas and multiple languages.

**Highlights:** AI-powered calculator generation, Custom formula support, Native iOS interface, Multi-language prompt support, Plain text description input

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Pack 15 credits | $0.99 | one-time |
| Unlock Unlimited Slots | $4.99 | one-time |
| Value Pack 50 credits | $4.99 | one-time |
| Master Pack 150 credits | $9.99 | one-time |


## Frequently asked questions

### Is Pro BMS free?

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

### Is Spark Number free?

Spark Number is free to download, with in-app purchases available.

### Which has better reviews, Pro BMS or Spark Number?

Spark Number is rated higher. Pro BMS averages 1.0 out of 5 from 1 ratings, while Spark Number averages 5.0 from 1 ratings.

### Do Pro BMS or Spark Number have ads?

Neither Pro BMS nor Spark Number shows ads.

### Which is updated more often, Pro BMS or Spark Number?

Pro BMS ships an update every 2 months, and Spark Number every 2 weeks. Most recently, Pro BMS was updated on October 13, 2026 and Spark Number 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.*