# KOYOE vs Sermatec

The clearest difference is review sentiment: KOYOE at 50% against Sermatec's 0%. 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.

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

## The numbers

| Metric | KOYOE | Sermatec |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 47 MB | 62 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jiangsu Koyoe Energy Technology Co.,Ltd](https://appshunter.io/developer/1501799525) | [Shanghai Sermatec Energy Technology CO.,LTD](https://appshunter.io/developer/1503982937) |

## What reviewers say

### KOYOE

[App page](https://appshunter.io/ios/app/koyoe/id1501799586)

This platform allows users to centrally monitor, analyze, and display data from power stations. It provides insights into operational status, energy efficiency, and revenue estimation, offering a scientific basis for economic operations and power station design. Real-time communication aids in quick fault diagnosis for safe operation.

**Highlights:** Centralized monitoring of power station data, Analysis of energy efficiency and operation status, Revenue estimation for power stations, Real-time fault information processing, Technical support for safe power station operation

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is KOYOE free?

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

### Is Sermatec free?

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

### Do KOYOE or Sermatec have ads?

Neither KOYOE nor Sermatec shows ads.

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

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