# M vs Casto Flasher

The clearest difference is update cadence: Casto Flasher at every 3 weeks against M's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

M ships an update every 2 months, Casto Flasher every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | M | Casto Flasher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/m-jet-flasher/id6781875320/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 4 MB | 66 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [M-JET FLASHER GmbH](https://appshunter.io/developer/1868671631) | [ZL Softare GmbH](https://appshunter.io/developer/6788573355) |

## What reviewers say

### M

[App page](https://appshunter.io/ios/app/m-jet-flasher/id6781875320)

This app connects to a dongle to transfer verified firmware to BRP vehicle ECUs. It guides users through identifying their vehicle, selecting firmware, and performing a safe transfer. Users can also read fault codes and access service functions.

**Highlights:** Vehicle identification and firmware version display, Guided flashing process with safety checks, Revert to stock firmware option, Read fault codes by ECU, Service functions for maintenance, Vehicle history and support in Garage, Automatic dongle firmware updates

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

**In-app purchases:** none


### Casto Flasher

[App page](https://appshunter.io/ios/app/casto-flasher/id6797246314)

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

**In-app purchases:** none


## Frequently asked questions

### Is M free?

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

### Is Casto Flasher free?

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

### Do M or Casto Flasher have ads?

Neither M nor Casto Flasher shows ads.

### Which is updated more often, M or Casto Flasher?

M ships an update every 2 months, and Casto Flasher every 3 weeks. Most recently, M was updated on October 25, 2026 and Casto Flasher on October 24, 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.*