# MHD Flasher vs HATSY

The clearest difference is rating: HATSY at 5.0 against MHD Flasher's 4.5. MHD Flasher's advantage is update cadence (fortnightly vs every 15 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.

HATSY 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, HATSY every 15 months. The most recent releases landed on September 24, 2026 and June 22, 2026 respectively.

## The numbers

| Metric | MHD Flasher | HATSY |
| --- | --- | --- |
| 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/hatsy/id1504400694/reviews)** |
| Number of ratings | **206** | 1 |
| Positive reviews | 65.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 15 months |
| Monetization | Free | Free |
| Size | 239 MB | 201 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MHD Tuning UG (haftungsbeschraenkt)](https://appshunter.io/developer/1445162439) | [John Deric Desvarro](https://appshunter.io/developer/1504400693) |

## 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


### HATSY

[App page](https://appshunter.io/ios/app/hatsy/id1504400694)

Manage and control your smart home devices remotely from anywhere. Create custom automation scenarios and invite family members to share control for a truly connected living experience.

**Highlights:** Remote device control, Intelligent automation scenarios, Family member invitation, Device sharing, Smart life experience

**In-app purchases:** none


## Frequently asked questions

### Is MHD Flasher free?

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

### Is HATSY free?

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

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

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

### Do MHD Flasher or HATSY have ads?

Neither MHD Flasher nor HATSY shows ads.

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

MHD Flasher ships an update fortnightly, and HATSY every 15 months. Most recently, MHD Flasher was updated on September 24, 2026 and HATSY on June 22, 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.*