# Convex Programmer's Calculator vs 8051 Tutorial Pro

The clearest difference is price: Convex Programmer's Calculator at Free against 8051 Tutorial Pro's $1.99. Convex Programmer's Calculator also leads on in-app purchases (none vs 10). 8051 Tutorial Pro's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On update cadence and ads there is nothing between them.

Convex Programmer's Calculator is free to download; 8051 Tutorial Pro costs $1.99 up front. 8051 Tutorial Pro sells 10 one-off in-app purchases. Convex Programmer's Calculator asks for nothing beyond the download.

Convex Programmer's Calculator ships an update every 8 months, 8051 Tutorial Pro every 6 months. The most recent releases landed on September 27, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Convex Programmer's Calculator | 8051 Tutorial Pro |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.7 (6 ratings)](https://appshunter.io/ios/app/convex-programmers-calculator/id1021414602/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 months** |
| Monetization | Free | — |
| Size | 0 MB | 17 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matthew Daigle](https://appshunter.io/developer/1021414601) | [Siu Yuen Ho](https://appshunter.io/developer/814088527) |

## What reviewers say

### Convex Programmer's Calculator

[App page](https://appshunter.io/ios/app/convex-programmers-calculator/id1021414602)

Convert numbers between hexadecimal, decimal, octal, and binary. Perform byte flips, bit shifts, and calculate two's complement. Features bit indicators and word grouping for improved binary readability.

**Highlights:** Number base conversion, Two's complement calculation, Byte flipping for endianness, Left and right bit shifting, Binary readability enhancements, Copy, paste, and clear functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### 8051 Tutorial Pro

[App page](https://appshunter.io/ios/app/8051-tutorial-pro/id1041770722)

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 18B20 | $0.99 | one-time |
| 24L01 | $0.99 | one-time |
| MPU6050 | $0.99 | one-time |
| OLED | $0.99 | one-time |
| ESP8266 | $1.99 | one-time |
| DHT22 project | $1.99 | one-time |
| DHT11 project | $1.99 | one-time |
| BMP180 project | $1.99 | one-time |
| BMP280 project | $1.99 | one-time |
| automation (BT) project | $1.99 | one-time |


## Frequently asked questions

### Is Convex Programmer's Calculator free?

Convex Programmer's Calculator is free to download, with no in-app purchases.

### Is 8051 Tutorial Pro free?

8051 Tutorial Pro costs $1.99, and also offers in-app purchases.

### Do Convex Programmer's Calculator or 8051 Tutorial Pro have ads?

Neither Convex Programmer's Calculator nor 8051 Tutorial Pro shows ads.

### Which is updated more often, Convex Programmer's Calculator or 8051 Tutorial Pro?

Convex Programmer's Calculator ships an update every 8 months, and 8051 Tutorial Pro every 6 months. Most recently, Convex Programmer's Calculator was updated on September 27, 2026 and 8051 Tutorial Pro on October 10, 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.*