# 環安衛稽核 vs PrimeVolt

The clearest difference is iOS requirement: 環安衛稽核 at 8.0 against PrimeVolt's 13.0. 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.

環安衛稽核 ships an update every 3 months, PrimeVolt every 6 weeks. The most recent releases landed on September 28, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 環安衛稽核 | PrimeVolt |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 12 MB | 12 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [HTTC Corporation](https://appshunter.io/developer/1067170436) | [AsianPowerDevicesInc](https://appshunter.io/developer/1214788661) |

## What reviewers say

### 環安衛稽核

[App page](https://appshunter.io/ios/app/id1099559101)

**Features:** macOS Compatibility

**In-app purchases:** none


### PrimeVolt

[App page](https://appshunter.io/ios/app/primevolt/id1291653570)

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

**In-app purchases:** none


## Frequently asked questions

### Is 環安衛稽核 free?

環安衛稽核 is free to download, with no in-app purchases.

### Is PrimeVolt free?

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

### Do 環安衛稽核 or PrimeVolt have ads?

Neither 環安衛稽核 nor PrimeVolt shows ads.

### Which is updated more often, 環安衛稽核 or PrimeVolt?

環安衛稽核 ships an update every 3 months, and PrimeVolt every 6 weeks. Most recently, 環安衛稽核 was updated on September 28, 2026 and PrimeVolt on October 6, 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.*