Sunnova vs GnG Owner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sunnova
Manage your home's energy ecosystem, including solar, storage, and electric vehicles, from a single app. Monitor performance, optimize energy usage, and gain insights into your home's energy consumption.
- Manage solar, storage, and EV devices
- View hourly, daily, and monthly performance
- Optimize home energy usage
- Monitor energy ecosystem
- Gain performance insights
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The Sunnova App puts homeowners in control of their home energy by combining modern energy appliances, including solar, storage, and electric vehicles, in one, convenient app. Users can manage their devices; view hourly, daily, and monthly performance; and discover new ways to optimize their home. As the central place for managing a new kind of home energy ecosystem, the Sunnova app enables homeowners to manage and optimize their Sunnova Adaptive Home™.
GnG Owner
Manage your vacation or long-term rental properties with this owner portal. View property details, track rental activity, review income, and communicate with your property management team. Request services and stay updated on property matters.
- View property details and photos
- Check rental calendars
- Review income and statements
- Request property services
- Message property management team
- Manage profile and account
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GnG Owner brings your relationship with GnG Vacation into one convenient owner portal. See your managed properties, review rental activity and stay in touch with the team that helps care for your homes. Whether your property is a vacation rental or a long-term rental, relevant information is organized around your account and property. - View property information and browse room-by-room photos. - Check rental calendars and manage owner blocks where available. - Review income activity and monthly statements. - Request cleaning, maintenance, inspections and other property services. - Follow service requests and property activity. - Message the GnG Vacation team in property conversations managed by your team; shared groups can include authorized co-owners. - Manage your profile and account information. Already working with GnG? Sign in with your owner account. New owners can start from Sign up. You can also explore the clearly marked Demo without using a live owner account. Available information and actions depend on your managed properties and account setup. Incomplete account details may limit access to earnings until required information is completed. Demo images, messages and financial figures are illustrative, not actual results or guaranteed earnings. English, Simplified Chinese and Spanish are supported in the app.
Screenshots
Verdict
Sunnova and GnG Owner both sit at 3.9 stars, but that hides the real split: 100% of GnG Owner's written reviews are positive against 6% of Sunnova's. Sunnova's advantage is ratings volume (860 vs 4) and iOS requirement (15.1 vs 17.0). On price, rating, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 3.9 for Sunnova against 4.0 for GnG Owner. That said, the two scores are not equally well evidenced: Sunnova has 860 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 6% of Sunnova's written reviews are positive against 100% of GnG Owner's.
Sunnova ships an update every 3 weeks, GnG Owner fortnightly. The most recent releases landed on October 30, 2026 and October 15, 2026 respectively.
| Parameter | Sunnova | GnG Owner |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (860 ratings) | 4.0 (4 ratings) — better |
| Positive reviews | 6.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 860 — better | 4 |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 87 MB | 38 MB |
| Age rating | 17+ | 4+ |
| Developer | Sunnova Energy | Daniel Hong |
Customer experience
Sunnova
GnG Owner
Bugs and requests
Sunnova
Reported bugs
3 issues- App freezes on startup
- Incorrect or missing production data
- Billing information not updating properly
Requested features
3 requests- Custom date range for production data
- Real-time energy usage and generation data
- Ability to view individual panel performance
GnG Owner
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sunnova
No in-app purchases
GnG Owner
No in-app purchases
