# Inver Energy vs VIOU

The clearest difference is update cadence: Inver Energy at monthly against VIOU's every 2 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.

Inver Energy ships an update monthly, VIOU every 2 months. The most recent releases landed on September 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Inver Energy | VIOU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 42 MB | 36 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Xiamen Invertech Energy Technology Co., Ltd.](https://appshunter.io/developer/1728799695) | [Guangzhou Weiou](https://appshunter.io/developer/1797473050) |

## What reviewers say

### Inver Energy

[App page](https://appshunter.io/ios/app/inver-energy/id6477270954)

**Features:** macOS Compatibility

**In-app purchases:** none


### VIOU

[App page](https://appshunter.io/ios/app/viou/id6742218202)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Inver Energy free?

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

### Is VIOU free?

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

### Do Inver Energy or VIOU have ads?

Neither Inver Energy nor VIOU shows ads.

### Which is updated more often, Inver Energy or VIOU?

Inver Energy ships an update monthly, and VIOU every 2 months. Most recently, Inver Energy was updated on September 29, 2026 and VIOU on October 25, 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.*