# U.S. Battery vs Evalation CORR

The clearest difference is update cadence: Evalation CORR at every 6 weeks against U.S. Battery's every 27 months. U.S. Battery's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.4). On price, 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.

U.S. Battery ships an update every 27 months, Evalation CORR every 6 weeks. The most recent releases landed on November 2, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | U.S. Battery | Evalation CORR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/us-battery/id1337553023/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 23 MB | 38 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [PALOS VERDES BUILDING CORP.](https://appshunter.io/developer/1337553022) | [Evalation](https://appshunter.io/developer/1890279124) |

## What reviewers say

### U.S. Battery

[App page](https://appshunter.io/ios/app/us-battery/id1337553023)

Discover the ideal battery for your equipment with this application's guide. Access product specifications, maintenance tips, and contact information. Find authorized distributors nearby, all from your mobile device.

**Highlights:** Battery application guide, Product specification sheets, Maintenance tips blog, Sales team contact, Distributor locator

**Features:** macOS Compatibility

**In-app purchases:** none


### Evalation CORR

[App page](https://appshunter.io/ios/app/evalation-corr/id6776379181)

**In-app purchases:** none


## Frequently asked questions

### Is U.S. Battery free?

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

### Is Evalation CORR free?

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

### Do U.S. Battery or Evalation CORR have ads?

Neither U.S. Battery nor Evalation CORR shows ads.

### Which is updated more often, U.S. Battery or Evalation CORR?

U.S. Battery ships an update every 27 months, and Evalation CORR every 6 weeks. Most recently, U.S. Battery was updated on November 2, 2026 and Evalation CORR on November 10, 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.*