# PSG vs Vacuums

The clearest difference is update cadence: Vacuums at every 6 months against PSG's every 15 months. PSG's advantage is iOS requirement (8.0 vs 17.6). 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.

PSG ships an update every 15 months, Vacuums every 6 months. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PSG | Vacuums |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/vacuums/id1241468166/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 6 months** |
| Monetization | — | Free |
| Size | 29 MB | 5 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Logics Software GmbH](https://appshunter.io/developer/483141393) | [Amnaj Sriwilai](https://appshunter.io/developer/1241468165) |

## What reviewers say

### PSG

[App page](https://appshunter.io/ios/app/psg-app-hot-runner/id922486308)

**Features:** macOS Compatibility

**In-app purchases:** none


### Vacuums

[App page](https://appshunter.io/ios/app/vacuums/id1241468166)

This app assists automation engineers and systems designers in calculating parameters for vacuum handling systems. It helps determine workpiece requirements, holding force, and optimal dimensions for vacuum cups and hoses.

**Highlights:** Workpiece calculation, Holding force calculation, Vacuum cup diameter calculation, Vacuum hose diameter calculation, Evacuation time estimation, Pump suction capacity calculation, Vacuum unit converter

**In-app purchases:** none


## Frequently asked questions

### Is PSG free?

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

### Is Vacuums free?

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

### Do PSG or Vacuums have ads?

Neither PSG nor Vacuums shows ads.

### Which is updated more often, PSG or Vacuums?

PSG ships an update every 15 months, and Vacuums every 6 months. Most recently, PSG was updated on October 9, 2026 and Vacuums on October 24, 2026.

---

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