# FranklinWH vs Sunnova Catalyst

The clearest difference is rating: Sunnova Catalyst at 4.6 against FranklinWH's 3.5. Sunnova Catalyst also leads on iOS requirement (13.4 vs 15.0). On price, ratings volume, update cadence and ads 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 3.5. Both are backed by a comparable volume of ratings — 92 and 43 respectively.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 14, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | FranklinWH | Sunnova Catalyst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (92 ratings)](https://appshunter.io/ios/app/franklinwh/id1562630432/reviews) | **[4.6 (43 ratings)](https://appshunter.io/ios/app/sunnova-catalyst/id1664577662/reviews)** |
| Number of ratings | **92** | 43 |
| Positive reviews | 38.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free | Free |
| Size | 166 MB | 73 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FranklinWH Energy Storage Inc](https://appshunter.io/developer/1759896550) | [Sunnova Energy Corp](https://appshunter.io/developer/1435520898) |

## What reviewers say

### FranklinWH

[App page](https://appshunter.io/ios/app/franklinwh/id1562630432)

Monitor and control your home energy system remotely. Track solar, grid, battery, and generator supply, alongside home electricity consumption. Optimize usage patterns and manage smart devices for energy savings.

**Highlights:** Remote system management, 24/7 energy monitoring, Usage statistics (year, month, day), Remote control of consumption patterns, Smart Circuit management (AC, EV chargers), Installer management tools

**Features:** macOS Compatibility

**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 FranklinWH free?

FranklinWH 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, FranklinWH or Sunnova Catalyst?

Sunnova Catalyst is rated higher. FranklinWH averages 3.5 out of 5 from 92 ratings, while Sunnova Catalyst averages 4.6 from 43 ratings.

### Do FranklinWH or Sunnova Catalyst have ads?

Neither FranklinWH nor Sunnova Catalyst shows ads.

### Which is updated more often, FranklinWH or Sunnova Catalyst?

FranklinWH ships an update fortnightly, and Sunnova Catalyst fortnightly. Most recently, FranklinWH was updated on October 14, 2026 and Sunnova Catalyst on September 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*