# O'Reilly Pro vs CarSignal

The clearest difference is rating: CarSignal at 5.0 against O'Reilly Pro's 4.3. CarSignal also leads on review sentiment (100% vs 60%) and update cadence (every 9 days vs every 4 weeks). O'Reilly Pro's advantage is ratings volume (385 vs 4) and chart position (#116 vs unranked). On price, ads, in-app purchases and monetization model there is nothing between them.

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

CarSignal holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: O'Reilly Pro has 385 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 60% of O'Reilly Pro's written reviews are positive against 100% of CarSignal's.

O'Reilly Pro ships an update every 4 weeks, CarSignal every 9 days. The most recent releases landed on October 27, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | O'Reilly Pro | CarSignal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (385 ratings)](https://appshunter.io/ios/app/oreilly-pro/id6467030803/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/carsignal/id6783920821/reviews)** |
| Number of ratings | **385** | 4 |
| Positive reviews | 60.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 9 days** |
| Monetization | Free | Free |
| Best chart rank | **#116** | — |
| Size | 53 MB | 73 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [O'Reilly Auto Parts](https://appshunter.io/developer/867284451) | [CarSignal Inc.](https://appshunter.io/developer/6783920823) |

## What reviewers say

### O'Reilly Pro

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

**Currently charting:** #116 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


### CarSignal

[App page](https://appshunter.io/ios/app/carsignal/id6783920821)

Manage your auto repair shop operations from your phone. Streamline vehicle check-ins, build quotes, order parts, track repairs, and process payments. Keep customers informed with direct messaging and digital inspections.

**Highlights:** Vehicle check-in via VIN/license plate scan, Customer quote generation and approval, Workflow visualization of active cars, Parts ordering and tracking, Time tracking for repairs, Digital inspections with photos/videos, Customer messaging and payment processing

**Features:** macOS Compatibility

**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 CarSignal free?

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

### Which has better reviews, O'Reilly Pro or CarSignal?

CarSignal is rated higher. O'Reilly Pro averages 4.3 out of 5 from 385 ratings, while CarSignal averages 5.0 from 4 ratings.

### Do O'Reilly Pro or CarSignal have ads?

Neither O'Reilly Pro nor CarSignal shows ads.

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

O'Reilly Pro ships an update every 4 weeks, and CarSignal every 9 days. Most recently, O'Reilly Pro was updated on October 27, 2026 and CarSignal 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.*