# AutoProAPP vs Carmin

The clearest difference is rating: Carmin at 4.3 against AutoProAPP's 3.5. Carmin also leads on review sentiment (55% vs 42%) and ratings volume (234 vs 37). AutoProAPP's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Carmin sells 2 in-app purchases, starting at $4.99 per month. AutoProAPP asks for nothing beyond the download.

Carmin holds the better App Store score, 4.3 against 3.5. That said, the two scores are not equally well evidenced: Carmin has 234 ratings behind it against 37, so its average is the more settled of the two. Written reviews point the same way: 42% of AutoProAPP's written reviews are positive against 55% of Carmin's.

AutoProAPP ships an update monthly, Carmin every 5 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | AutoProAPP | Carmin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (37 ratings)](https://appshunter.io/ios/app/autoproapp/id1128576891/reviews) | **[4.3 (234 ratings)](https://appshunter.io/ios/app/carmin/id1527982107/reviews)** |
| Number of ratings | 37 | **234** |
| Positive reviews | 42.3% of reviews | **55.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 28 MB | 18 MB |
| Requires iOS | **11.0** | 12 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [American Key Supply](https://appshunter.io/developer/1128576890) | [Chuan Nguyen Van](https://appshunter.io/developer/1527982109) |

## What reviewers say

### AutoProAPP

[App page](https://appshunter.io/ios/app/autoproapp/id1128576891)

This comprehensive resource provides automotive locksmiths with up-to-date vehicle information, including key codes, programming instructions, and unlocking methods. It features a community-driven database and customizable tools to aid in daily locksmith tasks.

**Highlights:** Vehicle code, tumbler, and lock info, Key, chip, remote, and shell data, Key decoding and programming instructions, Car door unlocking methods, Key blank cross-reference, VIN decoder

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

**In-app purchases:** none


### Carmin

[App page](https://appshunter.io/ios/app/carmin/id1527982107)

Access a comprehensive library of regularly updated automotive electrical wiring diagrams for car repair and study.  Includes videos and technical documents for research and reference.

**Highlights:** Electrical wiring diagrams, Regularly updated diagrams, Videos library, Technical documents, Car repair reference, Study purposes

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Annual | $49.99 | per year |

**What reviewers like**

- 📚 Comprehensive vehicle diagram database
- 💰 Free version available with good content
- 🎯 Helpful for car diagnostics and repairs
- ⚡ Quick access to wiring information
- 🌍 Supports multiple vehicle brands and models

**What reviewers complain about**

- 📺 Excessive advertisements in free version
- 🐛 Frequent app crashes and instability on iOS
- 🚫 Limited vehicle coverage (missing years and models)
- 🔤 Diagrams display as code/symbols instead of images
- 🌐 Language limitations (primarily English)

**Reported bugs**

- App crashes when opening diagrams on iOS
- App only opens one diagram per session before crashing
- Requires reinstallation to function properly
- Diagrams display as code/hieroglyphics instead of images
- Crashes on iOS 15, 16, and 17

**Requested features**

- Search functionality by make/model/year
- Alphabetical sorting of vehicles
- Favorites/bookmarks for frequently used diagrams
- Wiring color codes display
- Ability to isolate specific wiring for clarity


## Frequently asked questions

### Is AutoProAPP free?

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

### Is Carmin free?

Carmin is free to download, with in-app purchases available.

### Which has better reviews, AutoProAPP or Carmin?

Carmin is rated higher. AutoProAPP averages 3.5 out of 5 from 37 ratings, while Carmin averages 4.3 from 234 ratings.

### Do AutoProAPP or Carmin have ads?

Carmin shows ads; AutoProAPP does not.

### Which is updated more often, AutoProAPP or Carmin?

AutoProAPP ships an update monthly, and Carmin every 5 weeks. Most recently, AutoProAPP was updated on October 24, 2026 and Carmin on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*