Comparison

mFlasher vs Casto Flasher

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

mFlasher

This app offers advanced engine and transmission tuning for enhanced performance and EV range. It provides a streamlined, intuitive ecosystem for optimizing drivability without compromising OEM reliability. Features include in-app purchase and activation for a seamless experience.

Highlights
  • Integrated engine and transmission tuning
  • Streamlined purchase and activation
  • Stage-free optimization
  • In-house custom tuning
  • OEM-chosen excellence
  • Globally recognized performance
Features
Read full description

BMW performance, refined. More power with OEM-like drivability. M-Flasher brings engine and transmission optimization, performance flashing, data logging and diagnostics to your iPhone or iPad. Engineered in-house by MISSION in the USA. ENGINE OPTIMIZATION. NOT STAGES. Choose the calibration that matches your fuel and hardware. On supported vehicles, M-Flasher includes: • 91 and 93 octane calibrations, plus E30 on most applications • Integrated, passive transmission optimization • Selectable high-flow exhaust and downpipe settings • Built-in data logging and fault-code reading Instead of purchasing separate Stage 1, Stage 2 or OTS+ map packs, select from the included options for your supported configuration as your setup evolves. ONE PLATFORM. ONE ENGINEERING TEAM. Purchase, activate and flash directly through M-Flasher. No separate checkout website, license keys or manual activation codes. For specialized setups, work directly with a MISSION engineer on custom tuning. Logs, calibrations and revisions are exchanged through the same app. EXPLORE BEFORE YOU BUY. Download M-Flasher, create an account and explore Simulation Mode before purchasing. Available for supported BMW, MINI, Toyota GR Supra and Rolls-Royce vehicles. REQUIREMENTS Unlocked DME: An unlocked DME is required to use M-Flasher. DMEs can be unlocked quickly and easily at home, anywhere in the world using MISSION’s M-Link (also compatible with other platforms such as BM3, MHD, MGFlasher, Bootmod). Alternatively, customers may choose to source their own unlock or mail their DME to an unlock service, though these methods may involve additional time and effort. Vehicle connection requires compatible wired or wireless ENET hardware. Performance software and custom tuning require purchase. Features and calibrations vary by vehicle and configuration. MISSION. No Compromises.

About

Casto Flasher

Features
Read full description

Casto Flasher is a vehicle coding and configuration app for BMW cars. It connects to your own car through an OBD adapter that you plug into the diagnostic socket yourself, reads how the car is configured, and writes coding changes for the factory options your car supports. Everything happens over that local adapter connection, with you at the car. The app has no remote functionality: it cannot locate, unlock, start or otherwise operate a vehicle, and it does nothing at all when the adapter is not connected. WHAT IT CAN CODE - Remote Engine Start: the coding for the manufacturer's own remote start option. Once it is coded, the option is used the way the factory intended, from the car's key fob or from BMW's own My BMW app. Casto Flasher plays no part in that: it is not involved in starting the car and is not even running. The engine runs for up to 15 minutes and then stops on its own, the car stays locked, and the heated seats and heated steering wheel come on where the car has them. - Top Speed Limiter Raised: the electronic top speed limiter set to the figure the factory specifies for your model. - More options are being prepared. The app shows a new one as soon as it is ready for your car. HOW IT WORKS 1. Plug the MHD Universal adapter into your car's diagnostic socket. 2. Let the app check the car. This is free, takes about five minutes, and changes nothing on the car. 3. Choose an option and pay once. The purchase belongs to that one car. 4. Come back to the car and hold to code. About six minutes, while you stand next to it. THE HONEST PART - The check is the only real answer to "will this work on my car". A model name and a year are not enough, because two cars that look identical on paper can answer differently. The app decides at your car, before you pay anything. - Treat a coding change as one that stays. Reverting it is being built and will be free. - Changes to a car's configuration can affect what a dealer covers. If that matters to you, ask your dealer before you buy. You need the MHD Universal adapter, bought separately. We answer in English and German. Casto Flasher is an independent product of ZL Software GmbH. It is not affiliated with, authorised by, endorsed by or connected to Bayerische Motoren Werke AG. BMW, M and all model names are trademarks of their respective owners and are used here only to describe vehicle compatibility.

Screenshots

mFlasher4 screens
Casto Flasher4 screens

Verdict

The call

The clearest difference is iOS requirement: Casto Flasher at 16.4 against mFlasher's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

mFlasher ships an update monthly, Casto Flasher every 3 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
mFlasher versus Casto Flasher: the parameters behind the verdict, then further details
ParametermFlasherCasto Flasher
PriceFreeFree
Rating5.0 (10 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings10 — better—
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.616.4 — better
Further details — not scored
Size69 MB66 MB
Age rating4+4+
DeveloperMission Performance, LLCZL Softare GmbH

In-app purchases

None

mFlasher

No in-app purchases

None

Casto Flasher

No in-app purchases

Questions

Is mFlasher free?
mFlasher 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 mFlasher or Casto Flasher have ads?
Neither mFlasher nor Casto Flasher shows ads.
Which is updated more often, mFlasher or Casto Flasher?
mFlasher ships an update monthly, and Casto Flasher every 3 weeks. Most recently, mFlasher was updated on November 2, 2026 and Casto Flasher on October 31, 2026.

Other comparisons