# IIDControl vs Diag

The clearest difference is review sentiment: IIDControl at 67% against Diag's 9%. IIDControl also leads on rating (3.9 vs 2.8). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IIDControl holds the better App Store score, 3.9 against 2.8. Both are backed by a comparable volume of ratings — 14 and 23 respectively. Written reviews point the same way: 67% of IIDControl's written reviews are positive against 9% of Diag's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | IIDControl | Diag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (14 ratings)](https://appshunter.io/ios/app/iidcontrol/id634092136/reviews)** | [2.8 (23 ratings)](https://appshunter.io/ios/app/diag-bmw/id1433240741/reviews) |
| Number of ratings | 14 | **23** |
| Positive reviews | **66.7% of reviews** | 9.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 25 MB | 582 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GAP Innovation](https://appshunter.io/developer/632832354) | [Autel Intelligent Technology Co., Ltd.](https://appshunter.io/developer/770747094) |

## What reviewers say

### IIDControl

[App page](https://appshunter.io/ios/app/iidcontrol/id634092136)

Control Land Rover diagnostic tools like IIDTool and EASControl via Bluetooth from your iPhone or iPad. Offers faster navigation, live data display, and fault listing with email transmission.

**Highlights:** Bluetooth control of IIDTool and EASControl, Live data display, Fault listing with email transmission, Faster menu navigation, Vehicle display integration

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

**In-app purchases:** none


### Diag

[App page](https://appshunter.io/ios/app/diag-bmw/id1433240741)

This diagnostic software package is designed for BMW vehicles. It requires the MaxiAP200 main program to function. Access detailed vehicle diagnostics and information.

**Highlights:** BMW vehicle diagnostics, Requires MaxiAP200, Diagnostic software package, Vehicle information access

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

**In-app purchases:** none


## Frequently asked questions

### Is IIDControl free?

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

### Is Diag free?

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

### Which has better reviews, IIDControl or Diag?

IIDControl is rated higher. IIDControl averages 3.9 out of 5 from 14 ratings, while Diag averages 2.8 from 23 ratings.

### Do IIDControl or Diag have ads?

Neither IIDControl nor Diag shows ads.

### Which is updated more often, IIDControl or Diag?

IIDControl ships an update every 2 months, and Diag every 2 months. Most recently, IIDControl was updated on November 1, 2026 and Diag on November 4, 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.*