# Sunnova Catalyst vs Q.OMMAND PRO

The clearest difference is iOS requirement: Sunnova Catalyst at 13.4 against Q.OMMAND PRO's 16.0. On price, update cadence, 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.

Sunnova Catalyst ships an update fortnightly, Q.OMMAND PRO monthly. The most recent releases landed on September 29, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Sunnova Catalyst | Q.OMMAND PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (43 ratings)](https://appshunter.io/ios/app/sunnova-catalyst/id1664577662/reviews)** | — |
| Number of ratings | **43** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Size | 73 MB | 136 MB |
| Requires iOS | **13.4** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sunnova Energy Corp](https://appshunter.io/developer/1435520898) | [Q CELLS Technologies](https://appshunter.io/developer/1548240498) |

## What reviewers say

### Sunnova Catalyst

[App page](https://appshunter.io/ios/app/sunnova-catalyst/id1664577662)

This app simplifies the solar installation review process by allowing users to capture and track commissioning photos. It streamlines the workflow for solar professionals.

**Highlights:** Streamlines commissioning process, Capture commissioning photos, Track solar installation review, Solar professional workflow optimization

**Features:** macOS Compatibility

**In-app purchases:** none


### Q.OMMAND PRO

[App page](https://appshunter.io/ios/app/qommand-pro/id6478453023)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sunnova Catalyst free?

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

### Is Q.OMMAND PRO free?

Q.OMMAND PRO is free to download, with no in-app purchases.

### Do Sunnova Catalyst or Q.OMMAND PRO have ads?

Neither Sunnova Catalyst nor Q.OMMAND PRO shows ads.

### Which is updated more often, Sunnova Catalyst or Q.OMMAND PRO?

Sunnova Catalyst ships an update fortnightly, and Q.OMMAND PRO monthly. Most recently, Sunnova Catalyst was updated on September 29, 2026 and Q.OMMAND PRO on September 26, 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.*