# GS vs Tech

The clearest difference is rating: GS at 4.5 against Tech's 1.6. GS also leads on review sentiment (36% vs 13%) and update cadence (fortnightly vs monthly). On price, ads, in-app purchases and monetization model there is nothing between them.

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

GS holds the better App Store score, 4.5 against 1.6. Both are backed by a comparable volume of ratings — 345 and 88 respectively. Written reviews point the same way: 36% of GS's written reviews are positive against 13% of Tech's.

GS ships an update fortnightly, Tech monthly. Both last shipped on November 11, 2026.

## The numbers

| Metric | GS | Tech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (345 ratings)](https://appshunter.io/ios/app/gs-911wifi/id771720761/reviews)** | [1.6 (88 ratings)](https://appshunter.io/ios/app/tech-air-app/id1504440133/reviews) |
| Number of ratings | **345** | 88 |
| Positive reviews | **36.0% of reviews** | 13.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | Free |
| Size | 41 MB | 150 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hex Innovate UK Ltd](https://appshunter.io/developer/1792407503) | [Alpinestars](https://appshunter.io/developer/1499986821) |

## What reviewers say

### GS

[App page](https://appshunter.io/ios/app/gs-911wifi/id771720761)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Tech

[App page](https://appshunter.io/ios/app/tech-air-app/id1504440133)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ✅ Successful firmware updates when working properly
- 📍 Ride tracking and route recording functionality
- 🔋 Battery level monitoring
- ⚡ Quick pairing when conditions are optimal
- 🎯 Simple and intuitive UI design

**What reviewers complain about**

- 🐛 Constant disconnection issues between app and vest
- 📡 Extremely limited Bluetooth range (requires phone within 5cm of vest)
- 🔐 Registration and verification SMS not received in multiple regions
- ❌ Firmware update failures stuck at 2-3%
- ⚠️ App crashes on startup after updates

**Reported bugs**

- 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

**Requested features**

- 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


## Frequently asked 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 4.5 out of 5 from 345 ratings, while Tech averages 1.6 from 88 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 November 11, 2026 and Tech on November 11, 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.*