# MHD Flasher vs ATTC

The clearest difference is rating: ATTC at 5.0 against MHD Flasher's 4.5. MHD Flasher's advantage is update cadence (fortnightly vs every 27 months) and ratings volume (206 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

ATTC holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: MHD Flasher has 206 ratings behind it against 1, so its average is the more settled of the two.

MHD Flasher ships an update fortnightly, ATTC every 27 months. The most recent releases landed on September 24, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | MHD Flasher | ATTC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (206 ratings)](https://appshunter.io/ios/app/mhd-flasher/id1468182144/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/attc/id6467386211/reviews)** |
| Number of ratings | **206** | 1 |
| Positive reviews | 65.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 27 months |
| Monetization | Free | Free |
| Size | 239 MB | 6 MB |
| Requires iOS | **13.0** | 15.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MHD Tuning UG (haftungsbeschraenkt)](https://appshunter.io/developer/1445162439) | [Dähler Competition Line (Deutschland) GmbH](https://appshunter.io/developer/1708557301) |

## What reviewers say

### MHD Flasher

[App page](https://appshunter.io/ios/app/mhd-flasher/id1468182144)

This app allows for complete DME remapping of BMW vehicles, offering maximum performance and safety. It provides full OBD flashing, pre-configured performance maps, and advanced engine monitoring capabilities. Users can also customize various flash options for a personalized driving experience.

**Highlights:** Complete DME remapping, Full OBD flashing, Pre-configured performance maps (Stage 1, 2, E85), Advanced engine monitoring, Customizable flash options, Revert to factory OEM flash

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast flashing speeds (16-30 seconds)
- 👍 User-friendly interface and intuitive design
- 💪 Significant power gains and performance improvements
- 🎯 Excellent OTS (off-the-shelf) maps with multiple fuel options
- 📊 Comprehensive data logging and monitoring capabilities

**What reviewers complain about**

- 🐛 Frequent app crashes and stability issues
- ❌ Recent update broke core functionality for many users
- 🔌 Connection problems with WiFi adapters
- 📵 Unable to open app after recent updates
- 😞 Poor customer support responsiveness (recent)

**Reported bugs**

- App crashes on iOS 26.2 and newer versions
- Unable to flash after recent updates
- Unable to erase memory errors
- App fails to open after installation
- Connection constantly disconnects on N55 F30 platform

**Requested features**

- Add 94 octane fuel option
- Support for diesel engines
- Support for N63 engine tuning
- Max cooling fan option in new app
- Ability to change login email/username


### ATTC

[App page](https://appshunter.io/ios/app/attc/id6467386211)

Enhance your BMW's security and performance with an advanced anti-theft system. This device offers multiple driving modes, including an anti-theft feature that disables the accelerator pedal to prevent unauthorized use. Control it via your smartphone or a remote for a more responsive engine and potential fuel savings.

**Highlights:** Anti-theft mode, Valet mode, Multiple Power Pedal modes, Smartphone control, Remote control, 10% quicker acceleration, Fuel savings

**In-app purchases:** none


## Frequently asked questions

### Is MHD Flasher free?

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

### Is ATTC free?

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

### Which has better reviews, MHD Flasher or ATTC?

ATTC is rated higher. MHD Flasher averages 4.5 out of 5 from 206 ratings, while ATTC averages 5.0 from 1 ratings.

### Do MHD Flasher or ATTC have ads?

Neither MHD Flasher nor ATTC shows ads.

### Which is updated more often, MHD Flasher or ATTC?

MHD Flasher ships an update fortnightly, and ATTC every 27 months. Most recently, MHD Flasher was updated on September 24, 2026 and ATTC on June 2, 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.*