Pro vs Sentinel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pro
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.
- 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
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The Pro-Guide Battery management system is connected to the active equalizer via Bluetooth to monitor the battery status, collect, store and process information during battery operation in real， time Easy for after-sales management。 1. Display real-time voltage, current, power, internal resistance and other parameter values, and display them in the form of instrument panels and numbers; 2.Record battery data using a chart timeline. Easy to use 3. Each data comparison of the battery cell, the voltage difference. Maximum voltage cell Minimum voltage cell. And the display of cell balance 4. Cell temperature warning. Real-time alarm for over temperature, short circuit, over voltage, under voltage 5. Display the real-time voltage and alarm status of all single batteries. If the reported parameters trigger the alarm value or protection value, an alarm will be prompted; 6.New fault reporting function Use a Battery Monitoring System To get the most out of a lithium battery, it’s essential to use a battery monitoring system. This will help track your battery’s charging and discharging cycles and overall health. A battery monitoring system will ensure that your battery is always in top condition and prolong its lifespan. I hope Pro-Guide can help you learn more about the convenience of using the battery Best Regards ！
Sentinel
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This app reads lithium battery data via Bluetooth
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Pro | Sentinel |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17 |
| Further details — not scored | ||
| Size | 69 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Battery Outfitters, Inc | Guangdong Greenway Technology Co.,LTD |
In-app purchases
Pro
No in-app purchases
Sentinel
No in-app purchases
