# Deye ESS vs Eco

The clearest difference is iOS requirement: Deye ESS at 13.0 against Eco's 15.0. 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 ESS ships an update weekly, Eco every 2 weeks. The most recent releases landed on September 12, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Deye ESS | Eco |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/deye-ess/id6746040947/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Free | — |
| Size | 84 MB | 22 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [萃绩科技(上海)有限公司](https://appshunter.io/developer/1738188942) | [Ecowatt Technologies, Inc.](https://appshunter.io/developer/1851654926) |

## What reviewers say

### Deye ESS

[App page](https://appshunter.io/ios/app/deye-ess/id6746040947)

Manage your power station equipment throughout its lifecycle with smart, scenario-based energy storage. Features include real-time monitoring, efficient O&M, fault diagnosis, and a smart revenue calculator. Access nationwide electricity prices to optimize operations and maximize ROI.

**Highlights:** Full lifecycle equipment management, All-in-one O&M with fault diagnosis, AI-powered maintenance scheduling, Real-time equipment monitoring, Smart revenue calculator, Nationwide electricity price lookup

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

**In-app purchases:** none


### Eco

[App page](https://appshunter.io/ios/app/eco-watt/id6755060477)

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

**In-app purchases:** none


## Frequently asked questions

### Is Deye ESS free?

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

### Is Eco free?

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

### Do Deye ESS or Eco have ads?

Neither Deye ESS nor Eco shows ads.

### Which is updated more often, Deye ESS or Eco?

Deye ESS ships an update weekly, and Eco every 2 weeks. Most recently, Deye ESS was updated on September 12, 2026 and Eco on September 14, 2026.

---

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