# Sunnova vs Zhang Password Manager

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.

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.

## The numbers

| Metric | Sunnova | Zhang Password Manager |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (858 ratings)](https://appshunter.io/ios/app/sunnova/id1604631393/reviews)** | — |
| Number of ratings | **858** | — |
| Positive reviews | 6.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 87 MB | 3 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [Sunnova Energy](https://appshunter.io/developer/1435520898) | [Zi Zhang](https://appshunter.io/developer/1224458453) |

## What reviewers say

### Sunnova

[App page](https://appshunter.io/ios/app/sunnova/id1604631393)

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.

**Highlights:** Manage solar, storage, and EV devices, View energy performance (hourly, daily, monthly), Optimize home energy usage, Centralized energy ecosystem management, Control Sunnova Adaptive Home™

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Intuitive interface

**What reviewers complain about**

- 🐛 App crashes frequently
- ⚠️ Unreliable data
- 🔒 Login issues
- 💸 Poor customer service
- 🔋 Drains battery quickly

**Reported bugs**

- App freezes on startup
- Incorrect or missing production data
- Billing information not updating properly

**Requested features**

- Custom date range for production data
- Real-time energy usage and generation data
- Ability to view individual panel performance


### Zhang Password Manager

[App page](https://appshunter.io/ios/app/zhang-password-manager/id6450460214)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sunnova free?

Sunnova is free to download, with no in-app purchases.

### Is Zhang Password Manager free?

Zhang Password Manager is free to download, with no in-app purchases.

### Do Sunnova or Zhang Password Manager have ads?

Neither Sunnova nor Zhang Password Manager shows ads.

### Which is updated more often, Sunnova or Zhang Password Manager?

Sunnova ships an update every 3 weeks, and Zhang Password Manager every 2 months. Most recently, Sunnova was updated on October 27, 2026 and Zhang Password Manager 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.*