# JMP BattMon II vs AG LITHIUM

The clearest difference is update cadence: JMP BattMon II at every 2 weeks against AG LITHIUM's every 9 months. JMP BattMon II also leads on iOS requirement (10.0 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.

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

JMP BattMon II ships an update every 2 weeks, AG LITHIUM every 9 months. The most recent releases landed on October 13, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | JMP BattMon II | AG LITHIUM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/jmp-battmon-ii/id1342985491/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 46.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 27 MB | 42 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [AG AUTOMOTIVE GmbH](https://appshunter.io/developer/1581086009) |

## What reviewers say

### JMP BattMon II

[App page](https://appshunter.io/ios/app/jmp-battmon-ii/id1342985491)

Monitor your vehicle's battery in real-time via Bluetooth. Test cranking and charging system voltage to ensure your battery is in optimal condition. View all data directly on your mobile device.

**Highlights:** Real-time battery voltage monitoring, Bluetooth connectivity, Cranking system voltage test, Charging system voltage test, Data display on mobile device

**Features:** Vision Pro support

**In-app purchases:** none


### AG LITHIUM

[App page](https://appshunter.io/ios/app/ag-lithium/id1582129708)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JMP BattMon II free?

JMP BattMon II is free to download, with no in-app purchases.

### Is AG LITHIUM free?

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

### Do JMP BattMon II or AG LITHIUM have ads?

Neither JMP BattMon II nor AG LITHIUM shows ads.

### Which is updated more often, JMP BattMon II or AG LITHIUM?

JMP BattMon II ships an update every 2 weeks, and AG LITHIUM every 9 months. Most recently, JMP BattMon II was updated on October 13, 2026 and AG LITHIUM on October 27, 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.*