Comparison

MHD Flasher vs TOPDON CarPal

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

Head to head
About

MHD Flasher

This app allows BMW owners to remap their vehicle's engine control unit for enhanced performance and drivability. It offers full OBD flashing, various performance maps, and real-time engine monitoring. Users can also customize flash options like exhaust burble and Vmax removal.

Highlights
  • Full OBD engine remapping
  • Multiple performance map stages
  • Real-time engine parameter monitoring
  • Configurable gauge layouts
  • Customizable flash options
  • Fast installation and map changes
  • Revert to OEM flash capability
Features
Read full description

MHD Flasher is a complete flash tuning app for your BMW. Unlike a piggyback module, it is capable of complete DME remapping while retaining all OEM safety mechanisms. This allows for maximum performance,maximum safety, and unrivaled drivability. --------------------------------------------- Full OBD Flashing: You can install MHD right at home and start tuning immediately! Simply download the MHD Flasher app that connects via a Wi-Fi adapter to your iOS device and your vehicle’s OBD-II port, start the app, and within 4 minutes the initial installation is complete. Further map changes are much faster - only 20 seconds! You can revert your vehicle to the factory OEM flash at any point, and no initial backup is necessary. --------------------------------------------- Stage 1, Stage 2 und E85 OTS (Off The Shelf) Maps by PureBoost: N55 EWG (Vehicles built after 07/2013 with electronic wastegate): - Stage 1 (up to 360HP/540NM) (not available for M2 and X4 M40i) - Stage 2 (up to 390HP/580NM) - Stage 2+ (up to 430HP/630NM) - Ethanol Mix Maps: Stage 1, 2 and 2+ E20 Maps for ethanol blends of 20% N55 PWG (pneumatic wastegate): - Stage 1 (up to 340HP/540NM) - Stage 2 (up to 370HP/580NM) - Stage 2+ (up to 400HP/630NM) - Ethanol Mix Maps: Stage 1, 2 and 2+ E20 Maps for ethanol blends of 20% S55 (BMW M3 / M4 F8x): - Stage 1 (up to 530HP/700NM) - Stage 2 (up to 560HP/780NM) - Ethanol Mix Maps: Stage 1, 2 and 2+ E30 Maps for ethanol blends of 30% B58: - Stage 1 (up to 420HP/580NM) - Stage 2 (up to 470HP/630NM) - Ethanol Mix Maps: Stage 1, 2 Maps for ethanol blends of 30% --------------------------------------------- Monitor your engine behavior to make sure it is running perfectly using a configurable and very responsive gauge layout. 50+ engine parameters are available at a glance! These are some of the available monitors: - Boost, Boost Target - Lambda (AFR) - Intake Air Temp (IAT) - Ignition Timing per Cylinder - Coolant Temperature - Oil Temperature, Oil Pressure - Transmission Temperature - High Pressure Fuel Pump (HPFP) - Throttle Position - Wastegate Duty-Cycle (WGDC) - RPM - Speed - EGT And many more… MHD exclusive advanced monitor: - Timing Corrections per Cylinder - Boost target EX which can read higher than 22.x psi (the BMW boost target channel can't) - Base Compressor Axis: Boost Setpoint, MAF req WGDC. - Active Torque Limiters And many more… --------------------------------------------- These flash options can be applied to any map directly through the app: - Exhaust Burble (duration & aggressiveness, min speed, min rpm) - N20 Map Sensor (on N55) - Remove top speed limiter (Vmax) - Cold start noise reduction - Exhaust flap open in sport mode - Limit power per gear - XHP TCU flash support (optimizied OTS maps) - Sport cooling mode for increased water / air intercooler cooling (B58 only) --------------------------------------------- Supported E-Series Vehicles: 135i, 135is, 335i and 535i 2006-2013 335is 2011-2013 Z4 35i/is 2009-2015 1M 2011-2012 X1 35i 2010-2013 X5 35i 2010-2013 X6 35i 2008-2014 Supported F/G Series Vehicles: M135i F2x N55 2012 - 2016 M235i F2x N55 2013 - 2016 M2 F87 N55 2015 - 2018 335i N55 F3x 2011 - 2015 435i N55 F3x 2013 - 2016 535i / GT N55 F1x 2010 - 2017 640i N55 F0x 2011 - 2017 740i N55 F0x 2012 - 2015 X3 35i N55 F25 2010 - 2017 X4 35i / M40i N55 F26 2014 - 2018 X5 40i N55 F15 2013 - 2018 X6 40i N55 F16 2014 - 2018 M3 S55 F80 2014 - 2019 M4 S55 F82 2014 - 2019 M4 S55 F83 2014 - 2019 M140i F2x 2012 - 2019 M240i F2x 2016 - 2019 340i F3x 2015 - 2019 440i F3x 2016 - 2019 540i G3x 2017 - 640i GT G32 2017 - 740i G1x F0x 2015 - X3 M40i G01 2017 - X4 M40i G02 2018 - X5 40i G05 2018 - Z4 M40i G29 2019 - 114i F2x 2012 - 2015 116i F2x 2011 - 2015 118i F2x 2011 - 2016 120i F2x 2015 - 2017 316i F3x 2012 - 2018 X-Drive is supported on all cars. All performance power kit cars are supported. Check out our homepage / user manual for more information and recommended modifications for each stage.

About

TOPDON CarPal

Transform your phone into a powerful car diagnostic tool. This app offers comprehensive system checks, full OBD2 functionality, and specialized maintenance services for a wide range of vehicle brands. It provides detailed reports and a repair data library for easier troubleshooting.

Highlights
  • Full System Diagnosis
  • Full OBD2 Functions
  • 6 Special Maintenance Functions
  • AutoVIN Vehicle Identification
  • Wireless Bluetooth 5.0 Connection
  • Diagnostic Report Generation
Features
Read full description

Easily link the app with your Phone using Bluetooth, transforming your devices into a smart and high-powered diagnostic tool! Packed with essential features like complete OBDII functionality, all system diagnosis, AutoVIN, automatic diagnostic reports, and more, this Bluetooth OBDII scan tool is a must-have for your car. Its versatility shines through with 6 maintenance service functions and coverage for over 60 vehicle brands, making the product a portable and adaptable auto scanner. Main Features: 1. Full System Diagnosis: Covers Engine, Transmission, Airbag, ABS, ESP, TPMS, Immobilizer, Steering, Radio, Air Conditioning, and more. 2. Full OBD2 Functions: works as an OBD2 code reader and performs all 10 modes of OBD2 testing free for life. 3. 6 Special Functions: Perform Oil Reset, Throttle Adaptation, EPB Reset, BMS Reset, and more. 4. Repair Data Library: Includes DTC Repair Guide, Technical Service Bulletin, DLC Location, Warning Light Library. 5. AutoVIN: Enables automatic vehicle identification for quick diagnosis. 6. Wireless Connection: Utilizes Bluetooth 5.0 with a range of 33 feet/10m. 7. Graphs, Values, and Dashboard-like Data Display: Ensures easy interpretation of information. 8. Generate Diagnostic Reports: Obtain detailed reports for Systems, Fault Codes, or Data Streams. Terms of Use (EULA): https://plat.topdon.com/topdon-plat/out-user/baseinfo/template/getHtmlContentById?softCode=Car_Pal_DisplaySW_iOS&language=7&type=25

Screenshots

MHD Flasher4 screens
TOPDON CarPal4 screens

Verdict

The call

The clearest difference is rating: MHD Flasher at 4.5 against TOPDON CarPal's 3.7. MHD Flasher also leads on in-app purchases (none vs 10) and review sentiment (65% vs 40%). On price, ads, device support and iOS requirement 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. TOPDON CarPal sells 10 in-app purchases, starting at $4.99 per month. MHD Flasher asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MHD Flasher holds the better App Store score, 4.5 against 3.7. Both are backed by a comparable volume of ratings — 216 and 45 respectively. Written reviews point the same way: 65% of MHD Flasher's written reviews are positive against 40% of TOPDON CarPal's.

UpkeepUpdate frequency

MHD Flasher ships an update weekly, TOPDON CarPal every 3 weeks. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard6 real differences · 4 level
MHD Flasher versus TOPDON CarPal: the parameters behind the verdict, then further details
ParameterMHD FlasherTOPDON CarPal
PriceFreeFree
Rating4.5 (216 ratings) — better3.7 (45 ratings)
Positive reviews65.1% of reviews — better40.4% of reviews
Number of ratings216 — better45
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size241 MB3.1 GB
Age rating4+4+
DeveloperMHD Tuning UG (haftungsbeschraenkt)HK TOPDON TECHNOLOGY Co., LIMITED

Customer experience

MHD Flasher

All ratings216 ratings
Positive85.6%
Neutral3.2%
Negative11.1%
Written reviews129 reviews
Positive65.1%
Neutral10.9%
Negative24.0%

TOPDON CarPal

All ratings45 ratings
Positive66.7%
Neutral4.4%
Negative28.9%
Written reviews57 reviews
Positive40.4%
Neutral3.5%
Negative56.1%

Bugs and requests

MHD Flasher

Reported bugs

16 issues
  • 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
Show 11 more
  • Unable to upload logs to SpoolStreet
  • Cannot edit burples settings after update
  • Failed flashes (7+ consecutive failures reported)
  • Invalid credentials error on new device login
  • Monitor license not functioning
  • Anti-lag feature cannot be removed once flashed
  • Lumpy cold start with startup roar enabled
  • WiFi adapter disconnects during mapping
  • Unable to prepare memory section errors
  • User guide PDF crashes app
  • Missing custom tunes after app migration

Requested features

11 requests
  • 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
Show 6 more
  • License transfer capability for car sales
  • Support for Gen 2 B58 with MHD+ features
  • Ability to revert to previous OTS map versions
  • Detailed release notes for OTS map updates
  • Custom tune file transfer to new app
  • Burbles setting in regular mode (not just sport mode)

TOPDON CarPal

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

MHD Flasher

No in-app purchases

10 purchases

TOPDON CarPal

Subscriptions2
  • Monthly Auto-renewal$4.991 Month
  • Renewal Bundle$29.991 Year
One-time8
  • Renault Gateway 1-Token$11.99
  • VW SFD Gateway 1-Token$11.99
  • FCA Gateway 1-Token$11.99
Show 5 more
  • FCA Gateway 30-day Access$34.99
  • VW SFD Gateway 30-day Access$34.99
  • Renault Gateway 5 Tokens$116.99
  • Renault Gateway 5 Tokens$147.99
  • VW SFD Gateway 1-year Access$199.99

Questions

Is MHD Flasher free?
MHD Flasher is free to download, with no in-app purchases.
Is TOPDON CarPal free?
TOPDON CarPal is free to download, with in-app purchases available.
Which has better reviews, MHD Flasher or TOPDON CarPal?
MHD Flasher is rated higher. MHD Flasher averages 4.5 out of 5 from 216 ratings, while TOPDON CarPal averages 3.7 from 45 ratings.
Do MHD Flasher or TOPDON CarPal have ads?
Neither MHD Flasher nor TOPDON CarPal shows ads.
Which is updated more often, MHD Flasher or TOPDON CarPal?
MHD Flasher ships an update weekly, and TOPDON CarPal every 3 weeks. Most recently, MHD Flasher was updated on November 6, 2026 and TOPDON CarPal on November 5, 2026.

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