# Keystone Management vs Sunnova

The clearest difference is review sentiment: Keystone Management at 73% against Sunnova's 6%. Keystone Management also leads on rating (4.6 vs 3.9) and iOS requirement (12.0 vs 15.1). Sunnova's advantage is update cadence (every 3 weeks vs every 11 months) and ratings volume (860 vs 205). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Keystone Management holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 205 and 860 respectively. Written reviews point the same way: 73% of Keystone Management's written reviews are positive against 6% of Sunnova's.

Keystone Management ships an update every 11 months, Sunnova every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Keystone Management | Sunnova |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (205 ratings)](https://appshunter.io/ios/app/keystone-management/id1545489941/reviews)** | [3.9 (860 ratings)](https://appshunter.io/ios/app/sunnova/id1604631393/reviews) |
| Number of ratings | 205 | **860** |
| Positive reviews | **72.7% of reviews** | 6.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 84 MB | 87 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Yardi Systems, Inc.](https://appshunter.io/developer/425728804) | [Sunnova Energy](https://appshunter.io/developer/1435520898) |

## What reviewers say

### Keystone Management

[App page](https://appshunter.io/ios/app/keystone-management/id1545489941)

Manage your rental property account conveniently from your mobile device. Pay rent, submit maintenance requests, and review your account details anytime, anywhere.

**Highlights:** Pay rent, Request maintenance, Review account, On-the-go access

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Sunnova

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

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.

**Highlights:** Manage solar, storage, and EV devices, View hourly, daily, and monthly performance, Optimize home energy usage, Monitor energy ecosystem, Gain performance insights

**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


## Frequently asked questions

### Is Keystone Management free?

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

### Is Sunnova free?

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

### Which has better reviews, Keystone Management or Sunnova?

Keystone Management is rated higher. Keystone Management averages 4.6 out of 5 from 205 ratings, while Sunnova averages 3.9 from 860 ratings.

### Do Keystone Management or Sunnova have ads?

Neither Keystone Management nor Sunnova shows ads.

### Which is updated more often, Keystone Management or Sunnova?

Keystone Management ships an update every 11 months, and Sunnova every 3 weeks. Most recently, Keystone Management was updated on November 3, 2026 and Sunnova on November 3, 2026.

---

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