# Simula IPM vs HD Center

The clearest difference is update cadence: Simula IPM at every 4 weeks against HD Center's every 4 months. HD Center's advantage is iOS requirement (13.4 vs 16.4). 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.

Simula IPM ships an update every 4 weeks, HD Center every 4 months. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Simula IPM | HD Center |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 4 months |
| Size | 74 MB | 120 MB |
| Requires iOS | 16.4 | **13.4** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FOUR INFO DESENVOLVIMENTO DE SOFTWARE LTDA](https://appshunter.io/developer/1530075035) | [HD CENTER - PROJETOS LOCACOES E SERVICOS LTDA](https://appshunter.io/developer/1627739577) |

## What reviewers say

### Simula IPM

[App page](https://appshunter.io/ios/app/simula-ipm/id1532964171)

**Features:** macOS Compatibility

**In-app purchases:** none


### HD Center

[App page](https://appshunter.io/ios/app/hd-center/id6471662969)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simula IPM free?

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

### Is HD Center free?

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

### Do Simula IPM or HD Center have ads?

Neither Simula IPM nor HD Center shows ads.

### Which is updated more often, Simula IPM or HD Center?

Simula IPM ships an update every 4 weeks, and HD Center every 4 months. Most recently, Simula IPM was updated on October 2, 2026 and HD Center on September 28, 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.*