# O'Reilly Pro vs ACDelco Battery

The clearest difference is update cadence: O'Reilly Pro at every 4 weeks against ACDelco Battery's every 3 months. O'Reilly Pro also leads on chart position (#98 vs unranked). On price, ads, in-app purchases and device support there is nothing between them.

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

O'Reilly Pro ships an update every 4 weeks, ACDelco Battery every 3 months. The most recent releases landed on October 25, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | O'Reilly Pro | ACDelco Battery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (384 ratings)](https://appshunter.io/ios/app/oreilly-pro/id6467030803/reviews)** | — |
| Number of ratings | **384** | — |
| Positive reviews | 60.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 3 months |
| Monetization | Free | — |
| Best chart rank | **#98** | — |
| Size | 53 MB | 84 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [O'Reilly Auto Parts](https://appshunter.io/developer/867284451) | [Middle East Battery Company](https://appshunter.io/developer/1747467655) |

## What reviewers say

### O'Reilly Pro

[App page](https://appshunter.io/ios/app/oreilly-pro/id6467030803)

**Currently charting:** #98 Top Free · Business (US App Store)

Streamline vehicle service and parts management with this app designed for automotive repair professionals. Features include VIN scanning, parts lookup, ordering, and customer quoting. Supports English and Spanish.

**Highlights:** VIN scanner and license plate decoder, Parts lookup and ordering, Real-time inventory access, Part number interchange, Order placement and tracking, Customer quoting via text/email, Bilingual support (English/Spanish)

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast and quick
- 👍 Smooth and quick research
- 👍 Keeps cars rotating off lifts
- 👍 Simple to use, parts categorized
- 👍 Wonderful app, made job easier

**What reviewers complain about**

- 🔒 Cannot use without making an account, no guest mode
- ⚠️ Invoices on web and app do not include tax, inconvenient

**Reported bugs**

- Cannot get into app past login screen after 8 pm

**Requested features**

- Vehicle data/spec like Google
- Print invoices with tax


### ACDelco Battery

[App page](https://appshunter.io/ios/app/acdelco-battery/id6502937121)

**In-app purchases:** none


## Frequently asked questions

### Is O'Reilly Pro free?

O'Reilly Pro is free to download, with no in-app purchases.

### Is ACDelco Battery free?

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

### Do O'Reilly Pro or ACDelco Battery have ads?

Neither O'Reilly Pro nor ACDelco Battery shows ads.

### Which is updated more often, O'Reilly Pro or ACDelco Battery?

O'Reilly Pro ships an update every 4 weeks, and ACDelco Battery every 3 months. Most recently, O'Reilly Pro was updated on October 25, 2026 and ACDelco Battery on October 5, 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.*