# FN Tuned vs Ediag

The clearest difference is in-app purchases: Ediag at none against FN Tuned's 2. Ediag also leads on rating (4.3 vs 3.9) and ratings volume (1.6K vs 8). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. FN Tuned sells 2 in-app purchases, starting at $0.99 per month. Ediag asks for nothing beyond the download.

Ediag holds the better App Store score, 4.3 against 3.9. That said, the two scores are not equally well evidenced: Ediag has 1.6K ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 25% of FN Tuned's written reviews are positive against 30% of Ediag's.

FN Tuned ships an update every 3 weeks, Ediag every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | FN Tuned | Ediag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (8 ratings)](https://appshunter.io/ios/app/fn-tuned/id1554995530/reviews) | **[4.3 (1.6K ratings)](https://appshunter.io/ios/app/ediag/id6444249245/reviews)** |
| Number of ratings | 8 | **1.6K** |
| Positive reviews | 25.0% of reviews | **29.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 66 MB | 455 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vitalen Auto Performance Inc.](https://appshunter.io/developer/1358679851) | [Shenzhen Kingbolen Electrics Technology Co., Ltd.](https://appshunter.io/developer/1653350029) |

## What reviewers say

### FN Tuned

[App page](https://appshunter.io/ios/app/fn-tuned/id1554995530)

Enhance your vehicle's acceleration by eliminating electronic throttle lag. This app provides a quicker engine response, making your car feel more dynamic and powerful. Reclaim the responsiveness of older vehicles with modern technology.

**Highlights:** Eliminates throttle response delays, Improves engine acceleration, Restores responsive pedal feel, Modernizes older car performance, Offers anti-theft subscription

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Anti Theft Montly Subscription | $0.99 | per month |
| Anti Theft Annual Subscription | $9.99 | per year |


### Ediag

[App page](https://appshunter.io/ios/app/ediag/id6444249245)

Perform comprehensive vehicle diagnostics, including reading data flow, fault codes, and vehicle information. Generate professional diagnostic reports for major automobile manufacturers. Features one-key diagnosis and automatic VIN reading.

**Highlights:** Full-function diagnosis, Read data flow, Read/clear fault code, Read vehicle information, Automatic VIN reading, Diagnostic reports

**In-app purchases:** none

**What reviewers like**

- ✅ Comprehensive diagnostic information and functionality
- 🎯 Works well for specific vehicle models (Chevy, Acura, etc.)
- 💪 Advanced features like glow plug programming and ECU coding
- 📱 Helpful AI and YouTube integration for guidance
- 🔧 Good value for price compared to expensive scan tools

**What reviewers complain about**

- 💰 Hidden subscription fees for special functions ($19.99 each)
- 🐛 App crashes frequently after updates
- ❌ Poor vehicle compatibility with newer models (2023+)
- 🔐 Requires location data and network connectivity
- 😕 Confusing user interface and unclear section titles

**Reported bugs**

- App crashes after latest update
- Activation fails with correct codes (used devices)
- Communication errors during diagnostics
- VIN finder doesn't work well for older cars
- First-day connection issues requiring account reset

**Requested features**

- Support for newer vehicle models (2023+)
- Better auto-identification for Ford and other manufacturers
- Language settings menu (Turkish language support mentioned)
- Ability to command multiple functions from same test screen
- Improved VIN finder for older vehicles (1990s-2000s)


## Frequently asked questions

### Is FN Tuned free?

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

### Is Ediag free?

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

### Which has better reviews, FN Tuned or Ediag?

Ediag is rated higher. FN Tuned averages 3.9 out of 5 from 8 ratings, while Ediag averages 4.3 from 1.6K ratings.

### Do FN Tuned or Ediag have ads?

Neither FN Tuned nor Ediag shows ads.

### Which is updated more often, FN Tuned or Ediag?

FN Tuned ships an update every 3 weeks, and Ediag every 2 months. Most recently, FN Tuned was updated on November 3, 2026 and Ediag on November 3, 2026.

---

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