Sunnova vs Zhang Password Manager
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sunnova
Take charge of your home's energy consumption. This app integrates solar, storage, and electric vehicle management into a single platform. Monitor performance, optimize usage, and gain insights into your energy ecosystem.
- Manage solar, storage, and EV devices
- View energy performance (hourly, daily, monthly)
- Optimize home energy usage
- Centralized energy ecosystem management
- Control Sunnova Adaptive Home™
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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™.
Zhang Password Manager
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This application is used for managing your password. Users can add their accounts and passwords in the application. And user can reveal, copy and autofill the password.
Screenshots
Verdict
The clearest difference is update cadence: Sunnova at every 3 weeks against Zhang Password Manager's every 2 months. Zhang Password Manager's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement 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.
Sunnova ships an update every 3 weeks, Zhang Password Manager every 2 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | Sunnova | Zhang Password Manager |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (858 ratings) — better | — |
| Positive reviews | 6.3% of reviews | — |
| Number of ratings | 858 — better | — |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 87 MB | 3 MB |
| Age rating | 17+ | 4+ |
| Developer | Sunnova Energy | Zi Zhang |
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
Zhang Password Manager
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sunnova
No in-app purchases
Zhang Password Manager
No in-app purchases
Questions
Is Sunnova free?
Is Zhang Password Manager free?
Do Sunnova or Zhang Password Manager have ads?
Which is updated more often, Sunnova or Zhang Password Manager?
Other comparisons
