# AQ Indoor vs Quad OPMS

The clearest difference is update cadence: Quad OPMS at every 3 months against AQ Indoor's every 9 months. 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.

AQ Indoor ships an update every 9 months, Quad OPMS every 3 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | AQ Indoor | Quad OPMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Size | 33 MB | 36 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [XCSpec](https://appshunter.io/developer/1608100502) | [Autosys Industrial Solutions Private Limited](https://appshunter.io/developer/1703269777) |

## What reviewers say

### AQ Indoor

[App page](https://appshunter.io/ios/app/aq-indoor/id1608100500)

**Features:** macOS Compatibility

**In-app purchases:** none


### Quad OPMS

[App page](https://appshunter.io/ios/app/quad-opms/id6470180247)

**In-app purchases:** none


## Frequently asked questions

### Is AQ Indoor free?

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

### Is Quad OPMS free?

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

### Do AQ Indoor or Quad OPMS have ads?

Neither AQ Indoor nor Quad OPMS shows ads.

### Which is updated more often, AQ Indoor or Quad OPMS?

AQ Indoor ships an update every 9 months, and Quad OPMS every 3 months. Most recently, AQ Indoor was updated on October 25, 2026 and Quad OPMS on October 25, 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.*