# Internal Combustion Engine ICE vs Carmin

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.

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.

## The numbers

| Metric | Internal Combustion Engine ICE | Carmin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (223 ratings)](https://appshunter.io/ios/app/carmin/id1527982107/reviews)** |
| Number of ratings | — | **223** |
| Positive reviews | — | 54.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 29 MB | 18 MB |
| Requires iOS | 13.0 | **12** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sylviory Dubuisson](https://appshunter.io/developer/1584878614) | [Chuan Nguyen Van](https://appshunter.io/developer/1527982109) |

## What reviewers say

### Internal Combustion Engine ICE

[App page](https://appshunter.io/ios/app/internal-combustion-engine-ice/id1464409462)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### 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 Internal Combustion Engine ICE free?

Internal Combustion Engine ICE is free to download, with in-app purchases available.

### Is Carmin free?

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

### Do Internal Combustion Engine ICE or Carmin have ads?

Both Internal Combustion Engine ICE and Carmin show ads.

### Which is updated more often, Internal Combustion Engine ICE or Carmin?

Internal Combustion Engine ICE ships an update every 2 months, and Carmin every 5 weeks. Most recently, Internal Combustion Engine ICE was updated on September 16, 2026 and Carmin on September 24, 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.*