# sonsor vs WATTSTUNDE NOVA

The clearest difference is review sentiment: sonsor at 88% against WATTSTUNDE NOVA's 15%. WATTSTUNDE NOVA's advantage is iOS requirement (11.0 vs 15.6). 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.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | sonsor | WATTSTUNDE NOVA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **87.5% of reviews** | 14.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 45 MB | 9 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [pironex GmbH](https://appshunter.io/developer/1003725747) | [WATTSTUNDE GmbH](https://appshunter.io/developer/1469009647) |

## What reviewers say

### sonsor

[App page](https://appshunter.io/ios/app/sonsor-alarm-system/id6474242682)

Receive real-time alerts for break-ins and environmental data directly on your phone. This system detects various security threats and monitors conditions like fire, mold risk, sound, air quality, and temperature. Track sensor data live and customize your alerts and device management.

**Highlights:** Break-in detection, Environmental data monitoring, Real-time sensor tracking, Customizable alerts, Multi-device and member support, LTE and GPS integration

**In-app purchases:** none


### 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


## Frequently asked questions

### Is sonsor free?

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

### Is WATTSTUNDE NOVA free?

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

### Do sonsor or WATTSTUNDE NOVA have ads?

Neither sonsor nor WATTSTUNDE NOVA shows ads.

### Which is updated more often, sonsor or WATTSTUNDE NOVA?

sonsor ships an update every 3 weeks, and WATTSTUNDE NOVA every 3 weeks. Most recently, sonsor was updated on October 24, 2026 and WATTSTUNDE NOVA on October 11, 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.*