# Pro vs Sentinel

The clearest difference is iOS requirement: Pro at 12.0 against Sentinel's 17. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pro ships an update every 2 weeks, Sentinel weekly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Pro | Sentinel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pro-guide-ev/id6648759979/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 69 MB | 9 MB |
| Requires iOS | **12.0** | 17 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Battery Outfitters, Inc](https://appshunter.io/developer/1643911275) | [Guangdong Greenway Technology Co.,LTD](https://appshunter.io/developer/1802601217) |

## What reviewers say

### Pro

[App page](https://appshunter.io/ios/app/pro-guide-ev/id6648759979)

Monitor your battery's real-time status, including voltage, current, and internal resistance. Track historical data, compare cell performance, and receive alerts for temperature, short circuits, and voltage deviations. This system helps optimize lithium battery health and lifespan.

**Highlights:** Real-time voltage, current, power monitoring, Battery cell comparison and balance display, Cell temperature and fault warnings, Historical data charting, Bluetooth connectivity to equalizer, Alarm prompts for critical parameters

**Features:** macOS Compatibility

**In-app purchases:** none


### Sentinel

[App page](https://appshunter.io/ios/app/sentinel-lnx/id6757156713)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pro free?

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

### Is Sentinel free?

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

### Do Pro or Sentinel have ads?

Neither Pro nor Sentinel shows ads.

### Which is updated more often, Pro or Sentinel?

Pro ships an update every 2 weeks, and Sentinel weekly. Most recently, Pro was updated on November 4, 2026 and Sentinel on November 5, 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.*