# Span Installer vs Sunnova Catalyst

The clearest difference is rating: Sunnova Catalyst at 4.6 against Span Installer's 3.7. Sunnova Catalyst also leads on device support (3 vs 1) and ratings volume (43 vs 13). 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 holds the better App Store score, 4.6 against 3.7. Both are backed by a comparable volume of ratings — 13 and 43 respectively.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 11, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | Span Installer | Sunnova Catalyst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (13 ratings)](https://appshunter.io/ios/app/span-installer/id1477128965/reviews) | **[4.6 (43 ratings)](https://appshunter.io/ios/app/sunnova-catalyst/id1664577662/reviews)** |
| Number of ratings | 13 | **43** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free | Free |
| Size | 104 MB | 73 MB |
| Requires iOS | 17.6 | **13.4** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Span.io, Inc](https://appshunter.io/developer/1477128844) | [Sunnova Energy Corp](https://appshunter.io/developer/1435520898) |

## What reviewers say

### Span Installer

[App page](https://appshunter.io/ios/app/span-installer/id1477128965)

This app streamlines the installation and servicing of new and existing SPAN panels. It offers enhanced navigation, an improved breaker labeling process, and integrated troubleshooting support. Users can also confirm communications with battery systems and program setpoints for energy management.

**Highlights:** Faster new SPAN Panel commissioning, Simplified user navigation, Improved breaker labeling, Integrated troubleshooting and support, Confirm hardware communications, Program setpoints with SPAN PowerUp

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Span Installer free?

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

### Is Sunnova Catalyst free?

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

### Which has better reviews, Span Installer or Sunnova Catalyst?

Sunnova Catalyst is rated higher. Span Installer averages 3.7 out of 5 from 13 ratings, while Sunnova Catalyst averages 4.6 from 43 ratings.

### Do Span Installer or Sunnova Catalyst have ads?

Neither Span Installer nor Sunnova Catalyst shows ads.

### Which is updated more often, Span Installer or Sunnova Catalyst?

Span Installer ships an update fortnightly, and Sunnova Catalyst fortnightly. Most recently, Span Installer was updated on September 11, 2026 and Sunnova Catalyst on June 2, 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.*