# QR Send vs Linear Algebra

The clearest difference is in-app purchases: QR Send at none against Linear Algebra's 1. QR Send also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.6). Linear Algebra's advantage is update cadence (monthly vs every 6 months). On price and ads there is nothing between them.

Both are free to download. Linear Algebra sells 1 one-off in-app purchase. QR Send asks for nothing beyond the download.

QR Send ships an update every 6 months, Linear Algebra monthly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | QR Send | Linear Algebra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/qr-send/id981388395/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free | — |
| Size | 16 MB | 73 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shizuka TORITANI](https://appshunter.io/developer/967884555) | [光浩 李](https://appshunter.io/developer/1576352133) |

## What reviewers say

### QR Send

[App page](https://appshunter.io/ios/app/qr-send/id981388395)

Easily share any text information offline by generating and scanning QR codes. This utility allows for secure, internet-free data transfer between iOS devices and even Macs with a companion desktop app. It also keeps a history of all your scanned and created codes.

**Highlights:** Offline QR code sharing, Create QR codes from any text, Scan QR codes quickly, Edit scanned text, History of created/scanned texts, Send long texts via QR code sequence, Receive texts from Mac

**In-app purchases:** none


### Linear Algebra

[App page](https://appshunter.io/ios/app/linear-algebra-matrix-solver/id6766080565)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $2.99 | one-time |


## Frequently asked questions

### Is QR Send free?

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

### Is Linear Algebra free?

Linear Algebra is free to download, with in-app purchases available.

### Do QR Send or Linear Algebra have ads?

Neither QR Send nor Linear Algebra shows ads.

### Which is updated more often, QR Send or Linear Algebra?

QR Send ships an update every 6 months, and Linear Algebra monthly. Most recently, QR Send was updated on November 1, 2026 and Linear Algebra on October 31, 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.*