Internal Combustion Engine ICE vs Carmin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Internal Combustion Engine ICE
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Internal Combustion Engine ICE is a practical reference app for learning engine parts, systems, and automotive technology. Browse organized topics, search article titles or full article text, save favorites, and follow guided learning paths built from the included reference articles. Article text is bundled for offline reading, and optional image packs can be downloaded per language when you want richer offline media. The app is useful for automotive students, mechanics, engineering learners, and anyone who wants a compact engine reference on iPhone or iPad. Features: - Offline article library - Topic browser with alphabetical sections - Title and full-text search - Favorites and recent articles - Guided learning paths - Adjustable article text size - Light, dark, and system theme support - Optional per-language image downloads - Remove Ads purchase and restore Article content is based on Wikipedia and Wikimedia sources. Source links and license notes are available inside the app.
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
Internal Combustion Engine ICE and Carmin are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Internal Combustion Engine ICE sells 1 one-off in-app purchase and Carmin sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Internal Combustion Engine ICE ships an update every 2 months, Carmin every 5 weeks. The most recent releases landed on September 16, 2026 and September 24, 2026 respectively.
| Parameter | Internal Combustion Engine ICE | Carmin |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (223 ratings) — better |
| Positive reviews | — | 54.9% of reviews |
| Number of ratings | — | 223 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12 — better |
| Further details — not scored | ||
| Size | 29 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Sylviory Dubuisson | Chuan Nguyen Van |
Bugs and requests
Internal Combustion Engine ICE
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
Internal Combustion Engine ICE
- Remove Ads$1.99
Carmin
- Monthly$4.991 Month
- Annual$49.991 Year
