# Rotating Equipment Selector vs ELSA

The clearest difference is device support: Rotating Equipment Selector at 3 against ELSA's 1. Rotating Equipment Selector also leads on iOS requirement (13.0 vs 17.5). On price, 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.

## The numbers

| Metric | Rotating Equipment Selector | ELSA |
| --- | --- | --- |
| 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 | — |
| Monetization | Free | — |
| Size | 37 MB | 20 MB |
| Requires iOS | **13.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Siemens Energy](https://appshunter.io/developer/1539380213) | [Gas Infrastructure Europe](https://appshunter.io/developer/1891992315) |

## 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


### ELSA

[App page](https://appshunter.io/ios/app/elsa/id6761936690)

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

**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 ELSA free?

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

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

Neither Rotating Equipment Selector nor ELSA shows ads.

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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.*