# Tech vs optrel

The clearest difference is update cadence: Tech at monthly against optrel's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Tech ships an update monthly, optrel every 6 months. The most recent releases landed on September 18, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Tech | optrel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (83 ratings)](https://appshunter.io/ios/app/tech-air-app/id1504440133/reviews)** | — |
| Number of ratings | **83** | — |
| Positive reviews | 13.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | Free | — |
| Size | 151 MB | 207 MB |
| Requires iOS | 13.0 | **12.2** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ALPINESTARS SPA](https://appshunter.io/developer/1499986821) | [optrel tec ag](https://appshunter.io/developer/1549530923) |

## What reviewers say

### 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

**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


### optrel

[App page](https://appshunter.io/ios/app/optrel/id1549530921)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tech free?

Tech is free to download, with no in-app purchases.

### Is optrel free?

optrel is free to download, with no in-app purchases.

### Do Tech or optrel have ads?

Neither Tech nor optrel shows ads.

### Which is updated more often, Tech or optrel?

Tech ships an update monthly, and optrel every 6 months. Most recently, Tech was updated on September 18, 2026 and optrel on June 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.*