# WATTSTUNDE NOVA vs KELINNIU BMS

The clearest difference is update cadence: KELINNIU BMS at daily against WATTSTUNDE NOVA's every 3 weeks. 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.

WATTSTUNDE NOVA ships an update every 3 weeks, KELINNIU BMS daily. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | WATTSTUNDE NOVA | KELINNIU BMS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 14.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free | — |
| Size | 9 MB | 83 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [WATTSTUNDE GmbH](https://appshunter.io/developer/1469009647) | [QingdaoKelinNewEnergyTechnologyCo., Ltd](https://appshunter.io/developer/1748246452) |

## What reviewers say

### WATTSTUNDE NOVA

[App page](https://appshunter.io/ios/app/wattstunde-nova/id6480045065)

Monitor your WATTSTUNDE Smart Lithium Battery via Bluetooth 5.0 BLE. View real-time voltage, current, temperature, and cycle life data for your LiFePO4 battery within a 5-meter range. Connect to a single battery at a time for detailed performance insights.

**Highlights:** Bluetooth 5.0 BLE connectivity, Monitor voltage, current, temperature, Track cycle life, Real-time data display, Connect to one battery at a time

**Features:** macOS Compatibility

**In-app purchases:** none


### KELINNIU BMS

[App page](https://appshunter.io/ios/app/kelinniu-bms/id6503181613)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WATTSTUNDE NOVA free?

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

### Is KELINNIU BMS free?

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

### Do WATTSTUNDE NOVA or KELINNIU BMS have ads?

Neither WATTSTUNDE NOVA nor KELINNIU BMS shows ads.

### Which is updated more often, WATTSTUNDE NOVA or KELINNIU BMS?

WATTSTUNDE NOVA ships an update every 3 weeks, and KELINNIU BMS daily. Most recently, WATTSTUNDE NOVA was updated on October 11, 2026 and KELINNIU BMS on October 25, 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.*