# MHD Flasher vs KTuner FlexFuel

The clearest difference is rating: KTuner FlexFuel at 5.0 against MHD Flasher's 4.5. KTuner FlexFuel also leads on update cadence (daily vs fortnightly) and iOS requirement (11.0 vs 13.0). MHD Flasher's advantage is 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.

KTuner FlexFuel 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, KTuner FlexFuel daily. The most recent releases landed on September 24, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | MHD Flasher | KTuner FlexFuel |
| --- | --- | --- |
| 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/ktuner-flexfuel/id6447161311/reviews)** |
| Number of ratings | **206** | 1 |
| Positive reviews | 65.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free | Free |
| Size | 239 MB | 41 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MHD Tuning UG (haftungsbeschraenkt)](https://appshunter.io/developer/1445162439) | [Peter Linszter](https://appshunter.io/developer/530077583) |

## 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


### KTuner FlexFuel

[App page](https://appshunter.io/ios/app/ktuner-flexfuel/id6447161311)

This utility app connects to specific hardware units via Bluetooth to display real-time ethanol content and temperature. It provides essential data for users monitoring fuel mixtures.

**Highlights:** Bluetooth BLE connectivity, Real-time ethanol content display, Real-time temperature display, Supports KTuner FlexFuel units

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MHD Flasher free?

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

### Is KTuner FlexFuel free?

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

### Which has better reviews, MHD Flasher or KTuner FlexFuel?

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

### Do MHD Flasher or KTuner FlexFuel have ads?

Neither MHD Flasher nor KTuner FlexFuel shows ads.

### Which is updated more often, MHD Flasher or KTuner FlexFuel?

MHD Flasher ships an update fortnightly, and KTuner FlexFuel daily. Most recently, MHD Flasher was updated on September 24, 2026 and KTuner FlexFuel on August 19, 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.*