# Integra® e2 cylinder app vs PROQS

The clearest difference is device support: Integra® e2 cylinder app at 3 against PROQS's —. On price, in-app purchases and iOS requirement 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 | Integra® e2 cylinder app | PROQS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 6 months | — |
| Size | 144 MB | 65 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Air Products](https://appshunter.io/developer/567487726) | [Van Vulpen B.V.](https://appshunter.io/developer/1718897536) |

## What reviewers say

### Integra® e2 cylinder app

[App page](https://appshunter.io/ios/app/integra-e2-cylinder-app/id1426018692)

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

**In-app purchases:** none


### PROQS

[App page](https://appshunter.io/ios/app/proqs/id6473402932)

**In-app purchases:** none


## Frequently asked questions

### Is Integra® e2 cylinder app free?

Integra® e2 cylinder app is free to download, with no in-app purchases.

### Is PROQS free?

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

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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.*