# SmartESS vs i.Solar

The clearest difference is rating: SmartESS at 2.7 against i.Solar's 1.7. SmartESS also leads on ratings volume (125 vs 9) and iOS requirement (13.0 vs 15.0). i.Solar's advantage is update cadence (weekly vs monthly). On price, review sentiment, 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.

SmartESS holds the better App Store score, 2.7 against 1.7. That said, the two scores are not equally well evidenced: SmartESS has 125 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 20% of SmartESS's written reviews are positive against 13% of i.Solar's.

SmartESS ships an update monthly, i.Solar weekly. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SmartESS | i.Solar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (125 ratings)](https://appshunter.io/ios/app/smartess/id1334656760/reviews)** | [1.7 (9 ratings)](https://appshunter.io/ios/app/isolar/id1632580672/reviews) |
| Number of ratings | **125** | 9 |
| Positive reviews | **19.7% of reviews** | 12.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | Free |
| Size | 198 MB | 51 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [祥梯 孟](https://appshunter.io/developer/1070155084) | [Trusted UPS Manufacturing Company](https://appshunter.io/developer/1632202346) |

## What reviewers say

### SmartESS

[App page](https://appshunter.io/ios/app/smartess/id1334656760)

Monitor your energy storage machine's status in real-time with this mobile application. It offers easy-to-understand data visualization, historical data access from anywhere, and displays information in multiple dimensions. The app is designed for efficient data transfer with minimal internet traffic usage.

**Highlights:** Real-time energy storage machine monitoring, Intelligent data visualization, Simple and easy-to-understand charts, Access historical data anytime, anywhere, Multi-dimensional data display, Low internet traffic usage

**Features:** macOS Compatibility

**In-app purchases:** none


### i.Solar

[App page](https://appshunter.io/ios/app/isolar/id1632580672)

Monitor your inverters remotely with real-time data and control capabilities. This app allows for daily data tracking, command sending, and remote device management.

**Highlights:** Daily data monitoring, Real-time data enquiry, Command sending, Remote device control

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SmartESS free?

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

### Is i.Solar free?

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

### Which has better reviews, SmartESS or i.Solar?

SmartESS is rated higher. SmartESS averages 2.7 out of 5 from 125 ratings, while i.Solar averages 1.7 from 9 ratings.

### Do SmartESS or i.Solar have ads?

Neither SmartESS nor i.Solar shows ads.

### Which is updated more often, SmartESS or i.Solar?

SmartESS ships an update monthly, and i.Solar weekly. Most recently, SmartESS was updated on October 13, 2026 and i.Solar on October 10, 2026.

---

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