Comparison

xHP Flashtool vs GYEON App

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

Head to head
About

xHP Flashtool

This app offers a complete tuning solution for ZF automatic and DCT transmissions. It allows users to customize their transmission's behavior, from smooth and comfortable to race-ready performance, directly from their Apple devices. Unlock the full potential of your vehicle's transmission.

Highlights
  • ZF transmission tuning
  • Customizable shift behavior
  • OTS map selection
  • DCT transmission support
  • iOS/iPadOS/Mac M1 compatibility
  • Multiple adapter options
Features
Read full description

xHP Flashtool is the worldwide first and complete Tuning solution for your ZF6HP, ZF8HP Automatic or 7-Speed DCT transmission. xHP is the only tool that focuses fully on getting the best from your Auto-Transmission and is the worldwide leading solution for the best vehicles from Bavaria! xHP put's the power to fully customize your automatic transmission at your hands. Connect your Apple iPhone, IPad or Mac M1 to your car and customize by yourself or choose from pre-defined OTS maps. The ZF Autos are used throughout the whole range, from the 1-Series hatchbacks, to the mighty Alpina and M cars! While the hardware stays widely the same throughout all applications and is mainly divided in only 2 types (6HP19/21 and 6HP26/28 for 6-Speed, 8HP45/50/51 and 8HP70/75/76 for 8-Speed), the software inside the controller makes it possible to adapt the transmission, to every vehicle and mimic a wide range of driver styles. Smooth and comfy in the Luxury applications, the same transmission can be tweaked to deliver snap-on take-off behavior, surprisingly fast shift times and even race-style throttle blips on downshifts. Tweaking your transmission is not only about getting quicker, or holding more power. An automatic transmission is deeply involved into vehicle dynamics and contributes very much to the overall driving experience. From crawling in traffic, over city driving, to taking your vehicle to the drag strip or a race track, the TCU widely defines how your car feels. Like everyone drives different with a manual, the maps inside the TCU hide the secrets to tweak your automatic transmission to your personal likings and finally experience what was once promised in the glossy brochure: Sheer driving pleasure! For a seamless start, please read the manual on needed hardware and prerequisites: https://www.xhpflashtool.com To connect to your car, you have many options: xHP Wifi Adapter (blue), Wifi Thor Adapter, MHD Wifi Adapter (black and orange) or a standard OBD INPA USB or ENET cable! Please check our Connect-Diagram on our website to get further information and sources! https://www.xhpflashtool.com/connect_diagram/

About

GYEON App

This app provides expert guidance on car detailing techniques, covering everything from proper washing and scratch removal to ceramic coating application and interior cleaning. Access exclusive tips and tricks to achieve professional results.

Highlights
  • Car washing techniques
  • Scratch removal guidance
  • Ceramic coating application
  • Interior cleaning tips
  • Exclusive how-to guides
Features
Read full description

GYEON App - the first know how focused detailing app! How to wash my car properly? How to remove scratches on paint? How to apply a ceramic coating? How to clean my leather seats?... Find your answers with exclusive tip&tricks here!

Screenshots

xHP Flashtool4 screens
GYEON App3 screens

Verdict

The call

The clearest difference is monetization model: GYEON App at free against xHP Flashtool's paid. GYEON App also leads on iOS requirement (11.0 vs 15.0). xHP Flashtool's advantage is update cadence (weekly vs every 3 months) and ratings volume (2.7K vs 1). On price, rating, review sentiment and ads 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for xHP Flashtool against 5.0 for GYEON App. That said, the two scores are not equally well evidenced: xHP Flashtool has 2.7K ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 94% of xHP Flashtool's written reviews are positive against 100% of GYEON App's.

UpkeepUpdate frequency

xHP Flashtool ships an update weekly, GYEON App every 3 months. The most recent releases landed on October 17, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 6 level
xHP Flashtool versus GYEON App: the parameters behind the verdict, then further details
ParameterxHP FlashtoolGYEON App
PriceFreeFree
Rating4.9 (2.7K ratings)5.0 (1 ratings) — better
Positive reviews93.5% of reviews100.0% of reviews — better
Number of ratings2.7K — better1
Update frequencyWeekly — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size277 MB46 MB
Age rating4+4+
DeveloperxAutomotive GmbHInnovative Chemicals Pte. Ltd.

Customer experience

xHP Flashtool

All ratings2,748 ratings
Positive98.6%
Neutral0.4%
Negative1.0%
Written reviews448 reviews
Positive93.5%
Neutral0.4%
Negative6.0%

GYEON App

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

xHP Flashtool

Reported bugs

2 issues
  • App crashes during reflash process
  • Inability to sign out of account with wrong email

Requested features

3 requests
  • Expand compatibility to more vehicle models
  • Offer more affordable licensing options
  • Implement demo/trial mode for potential users

GYEON App

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

xHP Flashtool

No in-app purchases

None

GYEON App

No in-app purchases

Questions

Is xHP Flashtool free?
xHP Flashtool is free to download, with no in-app purchases.
Is GYEON App free?
GYEON App is free to download, with no in-app purchases.
Which has better reviews, xHP Flashtool or GYEON App?
GYEON App is rated higher. xHP Flashtool averages 4.9 out of 5 from 2.7K ratings, while GYEON App averages 5.0 from 1 ratings.
Do xHP Flashtool or GYEON App have ads?
Neither xHP Flashtool nor GYEON App shows ads.
Which is updated more often, xHP Flashtool or GYEON App?
xHP Flashtool ships an update weekly, and GYEON App every 3 months. Most recently, xHP Flashtool was updated on October 17, 2026 and GYEON App on October 2, 2026.

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