# WATTS Battery vs EWATT

WATTS Battery and EWATT are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

WATTS Battery ships an update monthly, EWATT every 2 months. Both last shipped on October 9, 2026.

## The numbers

| Metric | WATTS Battery | EWATT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/watts-battery/id1438346091/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 26 MB | 24 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Uatts Beteri, OOO](https://appshunter.io/developer/1438346090) | [帆 刘](https://appshunter.io/developer/1706245535) |

## What reviewers say

### WATTS Battery

[App page](https://appshunter.io/ios/app/watts-battery/id1438346091)

This application enables communication with a smart, portable energy storage module. It allows users to store solar energy and utilize it when needed, serving as an alternative to generators or an intelligent home energy management system.

**Highlights:** Communicate with WattsBattery module, Store and manage solar energy, Alternative to gasoline generators, Intelligent home energy management, Modular energy storage system

**Features:** macOS Compatibility

**In-app purchases:** none


### EWATT

[App page](https://appshunter.io/ios/app/ewatt-bms/id6464585303)

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

**In-app purchases:** none


## Frequently asked questions

### Is WATTS Battery free?

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

### Is EWATT free?

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

### Do WATTS Battery or EWATT have ads?

Neither WATTS Battery nor EWATT shows ads.

### Which is updated more often, WATTS Battery or EWATT?

WATTS Battery ships an update monthly, and EWATT every 2 months. Most recently, WATTS Battery was updated on October 9, 2026 and EWATT on October 9, 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.*