# CET vs RoyPow

The clearest difference is update cadence: RoyPow at every 5 days against CET's every 4 months. 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.

CET ships an update every 4 months, RoyPow every 5 days. The most recent releases landed on September 8, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | CET | RoyPow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/roypow/id6467867485/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | — | Ad-supported |
| Size | 31 MB | 133 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HIMOINSA SL](https://appshunter.io/developer/1618422755) | [Huizhou Roypow Technology Co.,Ltd](https://appshunter.io/developer/1709281978) |

## What reviewers say

### CET

[App page](https://appshunter.io/ios/app/cet-8/id1618422753)

**Features:** macOS Compatibility

**In-app purchases:** none


### RoyPow

[App page](https://appshunter.io/ios/app/roypow/id6467867485)

Monitor energy storage equipment in real-time with visual data displays. Control power storage and charging schedules to optimize costs and profits. Receive timely alerts for any system anomalies and access historical data records.

**Highlights:** Real-time equipment monitoring, Visual data display (GIFs, charts, lists), Power storage and charging control, Device anomaly reminders, Historical data records, Cost optimization

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

**In-app purchases:** none


## Frequently asked questions

### Is CET free?

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

### Is RoyPow free?

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

### Do CET or RoyPow have ads?

Neither CET nor RoyPow shows ads.

### Which is updated more often, CET or RoyPow?

CET ships an update every 4 months, and RoyPow every 5 days. Most recently, CET was updated on September 8, 2026 and RoyPow on September 14, 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.*