# Field Pro by ION Solar vs Sunnova Catalyst

The clearest difference is rating: Sunnova Catalyst at 4.6 against Field Pro by ION Solar's 1.6. Sunnova Catalyst also leads on update cadence (fortnightly vs every 6 weeks) and iOS requirement (13.4 vs 16.0). On price, ratings volume, 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 1.6. Both are backed by a comparable volume of ratings — 27 and 43 respectively.

Field Pro by ION Solar ships an update every 6 weeks, Sunnova Catalyst fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Field Pro by ION Solar | Sunnova Catalyst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (27 ratings)](https://appshunter.io/ios/app/field-pro-by-ion-solar/id1453939635/reviews) | **[4.6 (43 ratings)](https://appshunter.io/ios/app/sunnova-catalyst/id1664577662/reviews)** |
| Number of ratings | 27 | **43** |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 24 MB | 73 MB |
| Requires iOS | 16.0 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ION SOLAR LLC](https://appshunter.io/developer/1435218502) | [Sunnova Energy Corp](https://appshunter.io/developer/1435520898) |

## What reviewers say

### Field Pro by ION Solar

[App page](https://appshunter.io/ios/app/field-pro-by-ion-solar/id1453939635)

Manage and update appointments directly from the field. Track, review, and modify upcoming and completed tasks for installers, technicians, and surveyors.

**Highlights:** Track appointments, Update appointment status, Complete appointments, Review upcoming appointments, Modify completed appointments, Field access to data

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

**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 Field Pro by ION Solar free?

Field Pro by ION Solar 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, Field Pro by ION Solar or Sunnova Catalyst?

Sunnova Catalyst is rated higher. Field Pro by ION Solar averages 1.6 out of 5 from 27 ratings, while Sunnova Catalyst averages 4.6 from 43 ratings.

### Do Field Pro by ION Solar or Sunnova Catalyst have ads?

Neither Field Pro by ION Solar nor Sunnova Catalyst shows ads.

### Which is updated more often, Field Pro by ION Solar or Sunnova Catalyst?

Field Pro by ION Solar ships an update every 6 weeks, and Sunnova Catalyst fortnightly. Most recently, Field Pro by ION Solar was updated on October 24, 2026 and Sunnova Catalyst on October 24, 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.*