# WATTSTUNDE vs CANNY.LZR

The clearest difference is update cadence: CANNY.LZR at every 6 weeks against WATTSTUNDE's every 10 months. WATTSTUNDE's advantage is iOS requirement (13.0 vs 15.1). 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 ships an update every 10 months, CANNY.LZR every 6 weeks. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | WATTSTUNDE | CANNY.LZR |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 2 MB | 44 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [WATTSTUNDE GmbH](https://appshunter.io/developer/1469009647) | [Lazer Lamps Ltd](https://appshunter.io/developer/1745540252) |

## What reviewers say

### WATTSTUNDE

[App page](https://appshunter.io/ios/app/wattstunde/id1469009648)

Monitor your WATTSTUNDE Lithium Ion batteries wirelessly from your phone. Track cycle life, state of charge, voltage, current, and temperature for each battery independently. View battery events and signal levels with easy-to-read gauges.

**Highlights:** Wireless battery connection, Independent BMS access, Track cycle life, State of Charge (SOC) percentage, Display voltage, current, and temperature, Battery events display

**Features:** macOS Compatibility

**In-app purchases:** none


### CANNY.LZR

[App page](https://appshunter.io/ios/app/cannylzr/id6502455556)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is WATTSTUNDE free?

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

### Is CANNY.LZR free?

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

### Do WATTSTUNDE or CANNY.LZR have ads?

Neither WATTSTUNDE nor CANNY.LZR shows ads.

### Which is updated more often, WATTSTUNDE or CANNY.LZR?

WATTSTUNDE ships an update every 10 months, and CANNY.LZR every 6 weeks. Most recently, WATTSTUNDE was updated on October 29, 2026 and CANNY.LZR 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.*