# PrimeVolt vs ihouse EMS

The clearest difference is update cadence: ihouse EMS at fortnightly against PrimeVolt's every 6 weeks. PrimeVolt's advantage is iOS requirement (8.0 vs 12.0). 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.

PrimeVolt ships an update every 6 weeks, ihouse EMS fortnightly. The most recent releases landed on June 22, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | PrimeVolt | ihouse EMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Size | 19 MB | 92 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Asian Power Devices Inc](https://appshunter.io/developer/1214788661) | [A Clockwork Orange](https://appshunter.io/developer/522630862) |

## What reviewers say

### PrimeVolt

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ihouse EMS

[App page](https://appshunter.io/ios/app/ihouse-ems/id6497169348)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PrimeVolt free?

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

### Is ihouse EMS free?

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

### Do PrimeVolt or ihouse EMS have ads?

Neither PrimeVolt nor ihouse EMS shows ads.

### Which is updated more often, PrimeVolt or ihouse EMS?

PrimeVolt ships an update every 6 weeks, and ihouse EMS fortnightly. Most recently, PrimeVolt was updated on June 22, 2026 and ihouse EMS on September 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*