Tech vs Lean Angle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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.
Lean Angle
This app uses your phone's gyroscope to measure motorcycle or bicycle lean angles in real time. It tracks cornering statistics, maximum lean, and ride routes with GPS, offering safety alerts for lean limits.
- Real-time lean angle gauge
- High-frequency sampling
- Corner-by-corner statistics
- Maximum lean angle tracking
- GPS ride logging with corner markers
- Safety limit alerts
- Mount position calibration
Read full descriptionHide full description
Lean Angle is a motorcycle lean angle meter and ride tracker: mount your phone, tap Calibrate, ride, and see your live bank angle, then tap Finish ride for a summary of every corner and your personal bests. ▶ Live lean gauge • Left and right lean in degrees on a big gauge that turns green, yellow and red at your caution and warning angles • Max left, max right and G-force tiles, plus GPS speed (km/h or mph) and ride time • A REC indicator shows when the zero is set and the ride is recording • Portrait or landscape, and the screen stays on while the gauge is open ▶ True Lean with GPS In a steady corner an accelerometer alone reads too little, because gravity and cornering force add up along the bike. True Lean combines the gyroscope with your GPS speed and turn rate so a held corner shows the lean you are really carrying. A badge tells you when GPS is helping and when it is still waiting for a fix. ▶ Max lean you can trust The lean is capped at 90°, moments when GPS says you are stopped do not count, and when you leave the app mid-ride the swing of taking the phone off the mount is left out of the saved ride. Your max lean is a number from the road, not from your pocket. ▶ Ride summary and personal bests Tap Finish ride and the summary shows max lean left and right, average and top speed, distance, ride time, number of curves and peak G. Max lean, distance and ride time tiles that beat your personal best get a NEW BEST mark, and the card can be shared as an image. • Corner list: every corner with its side, time, peak lean and speed, the three deepest highlighted • Personal bests in History: deepest left and right lean, longest ride, total distance (rides of 1 km or more) ▶ History • Your last 50 rides, each with a lean-over-time graph and a lean distribution chart • Export any ride as CSV; a statistics report CSV across all rides unlocks for 24 hours after a short ad • Rides are saved automatically when you leave the app after 30 seconds of riding ▶ Voice alerts Hear a spoken caution and warning when your lean passes the angles you set (20° to 60°), so you never have to look down at the phone. ▶ Set up once • Calibrate on the mount: portrait, landscape or flat • Invert left/right if your mount reads the wrong way • A first-ride card walks you through mount, Calibrate, ride and Finish ride ▶ Good to know Readings come from the phone's motion sensors, so mount the phone firmly and calibrate it with the bike upright. True Lean and speed need GPS. This is a reference tool for curious riders, not a riding aid: keep your eyes on the road and ride within the law. For sport and touring riders, track-day riders and anyone who wants to know how far they really lean.
Screenshots
Verdict
The clearest difference is rating: Lean Angle at 3.0 against Tech's 1.6. Lean Angle also leads on update cadence (every 10 days vs monthly). Tech's advantage is ads (none vs shown) and ratings volume (87 vs 6). On price, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Lean Angle holds the better App Store score, 3.0 against 1.6. That said, the two scores are not equally well evidenced: Tech has 87 ratings behind it against 6, so its average is the more settled of the two.
Tech ships an update monthly, Lean Angle every 10 days. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | Tech | Lean Angle |
|---|---|---|
| Price | Free | Free |
| Rating | 1.6 (87 ratings) | 3.0 (6 ratings) — better |
| Positive reviews | 13.1% of reviews | — |
| Number of ratings | 87 — better | 6 |
| Update frequency | Monthly | Every 10 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 151 MB | 61 MB |
| Age rating | 4+ | 17+ |
| Developer | ALPINESTARS SPA | Kyu-Hee Jang |
Customer experience
Tech
Lean Angle
Bugs and 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 moreShow fewer
- 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 moreShow fewer
- 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
Lean Angle
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Tech
No in-app purchases
Lean Angle
No in-app purchases









