# Rotating Equipment Selector vs ProcessSafety

The clearest difference is update cadence: ProcessSafety at monthly against Rotating Equipment Selector's every 19 months. Rotating Equipment Selector's advantage is iOS requirement (13.0 vs 15.0). 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.

Rotating Equipment Selector ships an update every 19 months, ProcessSafety monthly. Both last shipped on June 1, 2026.

## The numbers

| Metric | Rotating Equipment Selector | ProcessSafety |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/rotating-equipment-selector/id1539380211/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Monthly** |
| Monetization | Free | — |
| Size | 37 MB | 83 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siemens Energy AG](https://appshunter.io/developer/1539380213) | [IoT Research Labs Private Ltd](https://appshunter.io/developer/1458073756) |

## What reviewers say

### Rotating Equipment Selector

[App page](https://appshunter.io/ios/app/rotating-equipment-selector/id1539380211)

This application assists in selecting centrifugal and reciprocating compressors, gas turbines, and motors. It provides a streamlined process for choosing the right equipment from a leading manufacturer.

**Highlights:** Compressor selection, Gas turbine selection, Motor selection, Equipment specification, Product catalog

**Features:** macOS Compatibility

**In-app purchases:** none


### ProcessSafety

[App page](https://appshunter.io/ios/app/processsafety/id6737113570)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rotating Equipment Selector free?

Rotating Equipment Selector is free to download, with no in-app purchases.

### Is ProcessSafety free?

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

### Do Rotating Equipment Selector or ProcessSafety have ads?

Neither Rotating Equipment Selector nor ProcessSafety shows ads.

### Which is updated more often, Rotating Equipment Selector or ProcessSafety?

Rotating Equipment Selector ships an update every 19 months, and ProcessSafety monthly. Most recently, Rotating Equipment Selector was updated on June 1, 2026 and ProcessSafety on June 1, 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.*