# Sermatec vs WattDesk

Sermatec and WattDesk are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Sermatec ships an update every 3 weeks, WattDesk fortnightly. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Sermatec | WattDesk |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 62 MB | 121 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Sermatec Energy Technology CO.,LTD](https://appshunter.io/developer/1503982937) | [旭浦能源](https://appshunter.io/developer/1475609563) |

## What reviewers say

### Sermatec

[App page](https://appshunter.io/ios/app/sermatec/id1503982938)

Monitor the status of integrated optical storage machines and view overall power station performance. Access real-time data charts, predict power generation efficiency, and manage historical alarms. Supports multiple power station and device management with online configuration and multi-account login.

**Highlights:** View overall power station status, Real-time data status charts, Equipment power generation efficiency prediction, Historical alarm monitoring, Multiple power station management, Online configuration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### WattDesk

[App page](https://appshunter.io/ios/app/wattdesk/id6471562319)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sermatec free?

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

### Is WattDesk free?

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

### Do Sermatec or WattDesk have ads?

Neither Sermatec nor WattDesk shows ads.

### Which is updated more often, Sermatec or WattDesk?

Sermatec ships an update every 3 weeks, and WattDesk fortnightly. Most recently, Sermatec was updated on September 23, 2026 and WattDesk on September 18, 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.*