AutoProAPP vs Carmin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AutoProAPP
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.
- 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
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THE ULTIMATE RESOURCE FOR AUTOMOTIVE LOCKSMITHS • FREE! • Always Up-to-Date • Community Driven • Customizable • By Locksmiths, For Locksmiths CAR, TRUCK & MOTORCYCLE INFO Get super-detailed vehicle info with a simple year/make/model search: • Code, tumbler & lock info • Key, chip, remote & shell info • Key decoding, cutting & programming info • Keymaking methods • Car door unlocking methods • Remote and key on-board programming (OBP) instructions • OBD port locations • Trunk opening methods • Vehicle-specific videos LOCKSMITH REFERENCES • Key Blank Cross-Reference • VIN Decoder • Nissan BCM to PIN Conversion • Tool & Machine References COMING SOON • Key Code Purchasing • Key Code Conversions • Customer Invoicing • Inventory Tracking • Fill Progressioning • Community Discussion Board
Carmin
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.
- Electrical wiring diagrams
- Regularly updated diagrams
- Videos library
- Technical documents
- Car repair reference
- Study purposes
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Regularly update for trustful Electrical Wiring Diagrams and can be used to refer when you do repairing car or study purpose. Videos and technical documents library for research, reference just by some clicks. Terms of Service: http://carmin-backend.appspot.com/tos
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 27, 2026 respectively.
| Parameter | AutoProAPP | Carmin |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (37 ratings) | 4.3 (234 ratings) — better |
| Positive reviews | 42.3% of reviews | 55.4% of reviews — better |
| Number of ratings | 37 | 234 — better |
| Update frequency | Monthly — better | Every 5 weeks |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12 |
| Further details — not scored | ||
| Size | 28 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | American Key Supply | Chuan Nguyen Van |
Customer experience
AutoProAPP
Carmin
Bugs and requests
AutoProAPP
Not enough reviews yet to summarise bugs or requests.
Carmin
Reported bugs
14 issues- 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
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- Startup errors and loading hangs
- iPad display issues (missing diagrams on tablets)
- Incorrect diagram rendering (e.g., Ford Mustang displays crooked)
- Save and print functions not working
- Malicious ad redirects to fake TEMU website
- Ad close buttons unreachable or hidden behind timers
- App incompatible with certain iOS versions
- Crashes when selecting vehicle brands
- Performance degradation after multiple uses
Requested features
15 requests- 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
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- Support for older vehicle years (pre-2000)
- Multilingual support (Russian, Spanish, Arabic, German)
- Text entry box for quick vehicle lookup
- Reduce ads in free version
- Support for right-hand drive vehicles
- iPad/tablet optimization
- Add missing vehicle models (Hyundai Elantra, Chevy Malibu 2016-2022, Toyota Veloz, Raize, Wigo)
- iOS 13+ compatibility
- Save and print PDF functionality
- Offline access to diagrams
In-app purchases
AutoProAPP
No in-app purchases
Carmin
- Monthly$4.991 Month
- Annual$49.991 Year
