# Approach Speed Calculator Pro vs 8051 Tutorial Pro

The clearest difference is in-app purchases: Approach Speed Calculator Pro at none against 8051 Tutorial Pro's 10. 8051 Tutorial Pro's advantage is price ($1.99 vs $2.99) and iOS requirement (12.0 vs 14.0). On update cadence, ads and device support there is nothing between them.

Approach Speed Calculator Pro costs $2.99 and 8051 Tutorial Pro $1.99 up front. 8051 Tutorial Pro sells 10 one-off in-app purchases. Approach Speed Calculator Pro asks for nothing beyond the download.

Approach Speed Calculator Pro ships an update every 3 months, 8051 Tutorial Pro every 6 months. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Approach Speed Calculator Pro | 8051 Tutorial Pro |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[4.5 (31 ratings)](https://appshunter.io/ios/app/approach-speed-calculator-pro/id581569231/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Paid | — |
| Size | 20 MB | 17 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Santiago Borja Lopez](https://appshunter.io/developer/581569234) | [Siu Yuen Ho](https://appshunter.io/developer/814088527) |

## What reviewers say

### Approach Speed Calculator Pro

[App page](https://appshunter.io/ios/app/approach-speed-calculator-pro/id581569231)

This tool helps pilots quickly and accurately calculate approach speeds for safe landings, following Boeing's FCTM procedures. It supports all Boeing models and is also recommended for Airbus and other jet aircraft.

**Highlights:** Calculate approach speeds, Follows Boeing FCTM procedures, Supports all Boeing models, Recommended for Airbus and other jets, Accurate landing speed determination

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

**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 Approach Speed Calculator Pro free?

Approach Speed Calculator Pro costs $2.99, with no in-app purchases.

### Is 8051 Tutorial Pro free?

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

### Do Approach Speed Calculator Pro or 8051 Tutorial Pro have ads?

Neither Approach Speed Calculator Pro nor 8051 Tutorial Pro shows ads.

### Which is updated more often, Approach Speed Calculator Pro or 8051 Tutorial Pro?

Approach Speed Calculator Pro ships an update every 3 months, and 8051 Tutorial Pro every 6 months. Most recently, Approach Speed Calculator Pro was updated on October 13, 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.*