Comparison

GS vs Tech

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

Head to head
About

GS

This app connects to a diagnostic interface for BMW motorcycles, allowing users to access ECU information, read/clear fault codes, monitor real-time data, and perform service functions. Emergency features are available offline, while advanced functions require an internet connection.

Highlights
  • Connect to GS-911wifi device
  • Read and clear fault codes
  • Monitor real-time sensor data
  • Reset service reminders
  • Perform advanced diagnostic functions
  • Offline emergency functionality
Features
Read full description

GS-911wifi is an app for BMW motorcycles. It requires a HEX GS-911wifi diagnostic interface. What Does the App Do? The GS-911wifi app makes it easy to get started with your GS-911wifi device. Set up, register, and connect to your GS-911wifi directly from your mobile device - no laptop or extra software needed. Once connected, you can access the full range of GS-911 diagnostic features through the app. Emergency functionality (ECU Info, read & clear fault codes, monitor real-time data) is available offline, while service functions require an internet connection. What Does a HEX GS-911wifi Diagnostic Interface Do? It is a Diagnostic Tool for BMW motorcycles. The GS-911wifi has USB and wifi connectivity, allowing you to “browse” your BMW motorcycle's Electronic Control Units (ECU). It connects to a BMW motorcycle's diagnostic connector allowing you dealer level diagnostic functionality. This functionality is dependent on model and complexity but includes: * Reading of ECU information (Software versions, part numbers etc.) * Reading and Clearing of Fault Codes for every ECU * Reading of LIVE sensor input/output data * Resetting of Service reminders * Functional output tests * Advanced diagnostic functions (ECU specific, but include calibrations, adaptation resets, ABS bleed tests, etc.) The GS-911wifi is compatible with all BMW motorcycles that have the round 10pin diagnostic connector, including the new generation chassis such as the K1600GT/GTL and R1200GS LC wethead. It is also backward compatible to the previous generation of BMW motorcycles, including the Husquvarna range of Nuda 900 and Nuda 900 R motorcycles that were developed in the time that BMW Motorrad owned Husqvarna motorcycles. Haven't purchased your GS-911wifi device just yet? Try the GS-911 Demo from within the app for an online simulation without a GS-911 device!

About

Tech

Easily register and monitor your motorcycle airbag system's status and battery life. Track ride details, record location and speed, and relive your journeys with detailed maps and statistics. Build a library of your rides and manage system settings.

Highlights
  • Register Tech-Air® 5 Airbag System
  • Monitor system status and battery life
  • Track ride details with location and speed
  • Record and visualize ride statistics
  • Build a library of recorded rides
  • Disable system for off-road riding
  • Update system firmware
Features
Read full description

Packed with a variety of useful features, the App lets you easily register your Tech-Air® 5 Airbag System and monitor its status and battery life, as well as tracking the details of your ride. The App uses Bluetooth Connectivity to access the System’s data.  Using the MyRide feature, riders can record location and speed continuously during a ride.  Relive your ride and visualize your average and top speeds at any point along the route by zooming in on the map.  MyRide gives motorcyclists the ability to record unlimited motorcycle rides and build up a complete library of individual trips, so you can easily retrace your trips and remember the great riding moments.  How it Works • See top stats for the ride – including the exact location where these results were achieved, average speed, trip time and distance covered. • Retrace each trip on an enhanced Google Map that shows your speed at any point you select along the trip. • Build up an awesome library of each ride you take on your bike. • Disable the Tech-Air® System when you’re going to start doing heavy off-road riding. • Verify the deployment of the Tech-Air® System after an accident. • Send feedback to the Alpinestars Tech-Air® development team. • Update the System’s firmware whenever available. • Download the online manual and useful documentation for air travel, shipments, and servicing. • Register your products.

Screenshots

GS4 screens
Tech4 screens

Verdict

The call

The clearest difference is rating: GS at 4.4 against Tech's 1.6. GS also leads on review sentiment (36% vs 13%) and ratings volume (316 vs 83). Tech's advantage is iOS requirement (13.0 vs 15.0). 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.

ReceptionRating · Positive reviews · Number of ratings

GS holds the better App Store score, 4.4 against 1.6. Both are backed by a comparable volume of ratings — 316 and 83 respectively. Written reviews point the same way: 36% of GS's written reviews are positive against 13% of Tech's.

UpkeepUpdate frequency

GS ships an update fortnightly, Tech monthly. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

Scorecard4 real differences · 6 level
GS versus Tech: the parameters behind the verdict, then further details
ParameterGSTech
PriceFreeFree
Rating4.4 (316 ratings) — better1.6 (83 ratings)
Positive reviews36.0% of reviews — better13.2% of reviews
Number of ratings316 — better83
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size41 MB151 MB
Age rating4+4+
DeveloperHEX INNOVATE (UK) LIMITEDALPINESTARS SPA

Customer experience

GS

All ratings313 ratings
Positive85.6%
Neutral3.2%
Negative11.2%
Written reviews25 reviews
Positive36.0%
Neutral20.0%
Negative44.0%

Tech

All ratings80 ratings
Positive13.8%
Neutral1.3%
Negative85.0%
Written reviews266 reviews
Positive13.2%
Neutral4.9%
Negative82.0%

Bugs and requests

GS

Not enough reviews yet to summarise bugs or requests.

Tech

Reported bugs

20 issues
  • App crashes immediately upon launch after updates
  • Firmware update stuck at 2% indefinitely
  • Error 12 during firmware installation
  • Verification SMS not arriving (especially for +420 Czech numbers and other regions)
  • QR code scanner not recognizing codes
Show 15 more
  • Manual code entry not progressing past input screen
  • Bluetooth connection drops during firmware updates
  • App shows 'already paired' but vest not visible in app
  • Battery percentage displays incorrectly or as 0%
  • Software update notification loop (says update available when already updated)
  • Tap input registration incorrect on registration form
  • App unresponsive during software update process
  • Bluetooth disconnection when phone is moved away from vest
  • App crashes when accessing 'My Rides' section
  • Ride data not recording properly (shows wrong duration/metrics)
  • Location tracking showing wrong geographic location
  • iOS 26 compatibility issues
  • App not sending feedback/crash reports
  • Inconsistent behavior across different iPhone models
  • App language settings affecting firmware update capability

Requested features

13 requests
  • PC/desktop application for firmware updates
  • Lean angle tracking and display
  • Maximum speed recording in ride logs
  • Acceleration metrics in ride data
  • Altitude data in ride tracking
Show 8 more
  • Ability to change phone number associated with account
  • Email verification option as alternative to SMS
  • Improved Bluetooth antenna strength
  • Automatic ride recording without manual activation
  • Better offline functionality
  • Software update caching on vest
  • Race mode activation without app dependency
  • More detailed ride statistics and analytics

In-app purchases

None

GS

No in-app purchases

None

Tech

No in-app purchases

Questions

Is GS free?
GS is free to download, with no in-app purchases.
Is Tech free?
Tech is free to download, with no in-app purchases.
Which has better reviews, GS or Tech?
GS is rated higher. GS averages 4.4 out of 5 from 316 ratings, while Tech averages 1.6 from 83 ratings.
Do GS or Tech have ads?
Neither GS nor Tech shows ads.
Which is updated more often, GS or Tech?
GS ships an update fortnightly, and Tech monthly. Most recently, GS was updated on September 24, 2026 and Tech on September 18, 2026.

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