# SolarEdge Mapper vs Sunnova Catalyst

The clearest difference is ratings volume: SolarEdge Mapper at 651 against Sunnova Catalyst's 43. Sunnova Catalyst's advantage is update cadence (fortnightly vs every 5 weeks). On price, rating, 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 4.5. That said, the two scores are not equally well evidenced: SolarEdge Mapper has 651 ratings behind it against 43, so its average is the more settled of the two.

SolarEdge Mapper ships an update every 5 weeks, Sunnova Catalyst fortnightly. The most recent releases landed on October 9, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SolarEdge Mapper | Sunnova Catalyst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (651 ratings)](https://appshunter.io/ios/app/solaredge-mapper/id432768469/reviews) | **[4.6 (43 ratings)](https://appshunter.io/ios/app/sunnova-catalyst/id1664577662/reviews)** |
| Number of ratings | **651** | 43 |
| Positive reviews | 29.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 50 MB | 73 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SolarEdge Technologies](https://appshunter.io/developer/384374350) | [Sunnova Energy Corp](https://appshunter.io/developer/1435520898) |

## What reviewers say

### SolarEdge Mapper

[App page](https://appshunter.io/ios/app/solaredge-mapper/id432768469)

Streamline new system registration for installers by mapping physical layouts directly within the cloud monitoring platform. Create, edit, and verify system layouts on-site, and easily scan and assign power optimizer serial numbers to their correct locations.

**Highlights:** Onsite system registration, System physical layout creation, Onsite layout editing, Onsite layout verification, Power optimizer serial number scanning, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✅ Seamless integration with Designer and monitoring apps
- 📱 Functional for onsite work
- 🎯 QR code scanning works well
- ⚡ Improved functionality in recent updates

**What reviewers complain about**

- 🐛 Excessive bugs and glitches throughout app
- ⏱️ Extremely slow loading times for sites
- 😕 Unintuitive and complicated user interface
- 🔧 Difficult setup and configuration process
- 📸 Camera/barcode scanning unreliable

**Reported bugs**

- Error 1001 when loading sites
- Site creation fails with errors
- Camera stops working for barcode scanning
- Endless loading screens when creating sites
- Invalid state validation errors in dropdown menus

**Requested features**

- iPad/tablet version of the app
- Ability to delete old sites and declutter home screen
- Array number option in array builder
- Easier scanning and array building process
- Customer/owner read-only access to mapper functions


### 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 SolarEdge Mapper free?

SolarEdge Mapper 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, SolarEdge Mapper or Sunnova Catalyst?

Sunnova Catalyst is rated higher. SolarEdge Mapper averages 4.5 out of 5 from 651 ratings, while Sunnova Catalyst averages 4.6 from 43 ratings.

### Do SolarEdge Mapper or Sunnova Catalyst have ads?

Neither SolarEdge Mapper nor Sunnova Catalyst shows ads.

### Which is updated more often, SolarEdge Mapper or Sunnova Catalyst?

SolarEdge Mapper ships an update every 5 weeks, and Sunnova Catalyst fortnightly. Most recently, SolarEdge Mapper was updated on October 9, 2026 and Sunnova Catalyst on September 29, 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.*