# QRCodeBDE vs Expression Solver

The clearest difference is ads: QRCodeBDE at none against Expression Solver's shown. Expression Solver's advantage is update cadence (monthly vs every 5 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

QRCodeBDE ships an update every 5 months, Expression Solver monthly. The most recent releases landed on October 1, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | QRCodeBDE | Expression Solver |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | — | Ad-supported |
| Size | 128 MB | 47 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GuidarePilotare s.r.l.](https://appshunter.io/developer/1372141426) | [Francesco Varotti](https://appshunter.io/developer/1501752853) |

## What reviewers say

### QRCodeBDE

[App page](https://appshunter.io/ios/app/qrcodebde/id1372141427)

**Features:** macOS Compatibility

**In-app purchases:** none


### Expression Solver

[App page](https://appshunter.io/ios/app/expression-solver/id1555902561)

This app provides step-by-step solutions for mathematical expressions, helping users improve their math skills. It features a specialized keyboard for easy input of complex numbers and offers practice exercises with detailed explanations.

**Highlights:** Instant expression solving, Step-by-step explanations, Math keyboard for complex input, Practice exercises with solutions, Intuitive interface

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

**In-app purchases:** none


## Frequently asked questions

### Is QRCodeBDE free?

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

### Is Expression Solver free?

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

### Do QRCodeBDE or Expression Solver have ads?

Expression Solver shows ads; QRCodeBDE does not.

### Which is updated more often, QRCodeBDE or Expression Solver?

QRCodeBDE ships an update every 5 months, and Expression Solver monthly. Most recently, QRCodeBDE was updated on October 1, 2026 and Expression Solver on October 5, 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.*