# WATTS Battery vs BladderUSG Pro

The clearest difference is iOS requirement: WATTS Battery at 13.0 against BladderUSG Pro'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.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | WATTS Battery | BladderUSG Pro |
| --- | --- | --- |
| 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 | Monthly |
| Monetization | Free | — |
| Size | 26 MB | 17 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Uatts Beteri, OOO](https://appshunter.io/developer/1438346090) | [SonoStarMed](https://appshunter.io/developer/1113993886) |

## 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


### BladderUSG Pro

[App page](https://appshunter.io/ios/app/bladderusg-pro/id6450775928)

**In-app purchases:** none


## Frequently asked questions

### Is WATTS Battery free?

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

### Is BladderUSG Pro free?

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

### Do WATTS Battery or BladderUSG Pro have ads?

Neither WATTS Battery nor BladderUSG Pro shows ads.

### Which is updated more often, WATTS Battery or BladderUSG Pro?

WATTS Battery ships an update monthly, and BladderUSG Pro monthly. Most recently, WATTS Battery was updated on October 9, 2026 and BladderUSG Pro on October 12, 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.*