# Tech vs Matrix Calc Plus

The clearest difference is price: Tech at Free against Matrix Calc Plus's $2.99. Tech also leads on update cadence (monthly vs every 26 months) and iOS requirement (13.0 vs 18.2). On ads, in-app purchases and device support there is nothing between them.

Tech is free to download; Matrix Calc Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Tech ships an update monthly, Matrix Calc Plus every 26 months. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Tech | Matrix Calc Plus |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[1.6 (83 ratings)](https://appshunter.io/ios/app/tech-air-app/id1504440133/reviews)** | — |
| Number of ratings | **83** | — |
| Positive reviews | 13.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 26 months |
| Monetization | Free | — |
| Size | 151 MB | 9 MB |
| Requires iOS | **13.0** | 18.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ALPINESTARS SPA](https://appshunter.io/developer/1499986821) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## 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


### Matrix Calc Plus

[App page](https://appshunter.io/ios/app/matrix-calc-plus/id1592961256)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tech free?

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

### Is Matrix Calc Plus free?

Matrix Calc Plus costs $2.99, with no in-app purchases.

### Do Tech or Matrix Calc Plus have ads?

Neither Tech nor Matrix Calc Plus shows ads.

### Which is updated more often, Tech or Matrix Calc Plus?

Tech ships an update monthly, and Matrix Calc Plus every 26 months. Most recently, Tech was updated on October 12, 2026 and Matrix Calc Plus on October 3, 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.*