# KOSTAL Solar App vs Deye Cloud

The clearest difference is rating: Deye Cloud at 4.8 against KOSTAL Solar App's 2.0. Deye Cloud also leads on ratings volume (280 vs 6) and review sentiment (69% vs 56%). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Deye Cloud holds the better App Store score, 4.8 against 2.0. That said, the two scores are not equally well evidenced: Deye Cloud has 280 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 56% of KOSTAL Solar App's written reviews are positive against 69% of Deye Cloud's.

KOSTAL Solar App ships an update every 3 weeks, Deye Cloud every 2 weeks. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | KOSTAL Solar App | Deye Cloud |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (6 ratings)](https://appshunter.io/ios/app/kostal-solar-app/id1451610122/reviews) | **[4.8 (280 ratings)](https://appshunter.io/ios/app/deye-cloud/id1632169719/reviews)** |
| Number of ratings | 6 | **280** |
| Positive reviews | 56.4% of reviews | **69.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 68 MB | 221 MB |
| Requires iOS | **14.5** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KOSTAL Solar Electric GmbH](https://appshunter.io/developer/961587700) | [萃绩科技(上海)有限公司](https://appshunter.io/developer/1738188942) |

## What reviewers say

### KOSTAL Solar App

[App page](https://appshunter.io/ios/app/kostal-solar-app/id1451610122)

Monitor your photovoltaic system remotely with this free app. View generation and consumption data, access historical information, and utilize a virtual battery feature for forecasting. Requires access to the KOSTAL solar portal and an inverter.

**Highlights:** Remote photovoltaic system monitoring, View generation and consumption data, Access historical system data, 3-day generation and consumption forecast, Virtual battery simulation, Graphical data display

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Deye Cloud

[App page](https://appshunter.io/ios/app/deye-cloud/id1632169719)

This app facilitates the establishment, monitoring, and maintenance of new energy power stations. It offers transparent management through a big data platform, supporting various power station and equipment types for efficient operation and troubleshooting.

**Highlights:** Power station establishment, Real-time data monitoring, Operation and maintenance services, After-sales support, Transparent power station management, Accurate alarm positioning, Intelligent data analysis

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Very good tool for monitoring
- 👍 Best Hybrid solar inverter
- 👍 Very high quality
- 👍 Nice beautiful service
- 👍 Extremely good

**What reviewers complain about**

- 🐛 Data from inverter isn’t live
- 🐛 Latency issues
- 🐛 User friendly configuration needed
- 🐛 Copilot prioritizes earning over backup
- 🐛 Push notifications not working

**Reported bugs**

- Data from inverter isn’t live
- Push notifications not working
- No push notifications alerts
- Copilot ended up costing us £150 extra every month
- App isn’t working on IOS

**Requested features**

- Add total yield
- Suggest a third option: Force Sell Mode
- Still see load usage when selling first
- Build more servers around the world
- Dedicated app server centre in Australia


## Frequently asked questions

### Is KOSTAL Solar App free?

KOSTAL Solar App is free to download, with no in-app purchases.

### Is Deye Cloud free?

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

### Which has better reviews, KOSTAL Solar App or Deye Cloud?

Deye Cloud is rated higher. KOSTAL Solar App averages 2.0 out of 5 from 6 ratings, while Deye Cloud averages 4.8 from 280 ratings.

### Do KOSTAL Solar App or Deye Cloud have ads?

Neither KOSTAL Solar App nor Deye Cloud shows ads.

### Which is updated more often, KOSTAL Solar App or Deye Cloud?

KOSTAL Solar App ships an update every 3 weeks, and Deye Cloud every 2 weeks. Most recently, KOSTAL Solar App was updated on October 26, 2026 and Deye Cloud on October 30, 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.*