# Wind Triangle vs Aviation Calculator AvCalc

The clearest difference is price: Aviation Calculator AvCalc at Free against Wind Triangle's $2.99. Wind Triangle's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

Aviation Calculator AvCalc is free to download; Wind Triangle costs $2.99 up front. Aviation Calculator AvCalc sells 1 one-off in-app purchase. Wind Triangle asks for nothing beyond the download.

Wind Triangle ships an update every 2 months, Aviation Calculator AvCalc every 3 months. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Wind Triangle | Aviation Calculator AvCalc |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/aviation-calculator-avcalc/id6767033258/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 20 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Small Aviation Tools](https://appshunter.io/developer/1887792413) | [Fifteen Jugglers Software UG](https://appshunter.io/developer/292972357) |

## What reviewers say

### Wind Triangle

[App page](https://appshunter.io/ios/app/wind-triangle/id6761390120)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Aviation Calculator AvCalc

[App page](https://appshunter.io/ios/app/aviation-calculator-avcalc/id6767033258)

This app provides pilots with essential aviation calculations for flight planning and cockpit use. It offers quick answers for time, speed, distance, fuel, performance, weather decoding, and more, all in a compact interface.

**Highlights:** Time, speed, and distance calculations, Wind correction and runway components, Fuel planning and endurance estimates, Performance calculations (altitude, Mach, climb), METAR/TAF weather decoding, Weight and balance checks, Unit conversions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AvCalc Pro | $19.99 | one-time |


## Frequently asked questions

### Is Wind Triangle free?

Wind Triangle costs $2.99, with no in-app purchases.

### Is Aviation Calculator AvCalc free?

Aviation Calculator AvCalc is free to download, with in-app purchases available.

### Do Wind Triangle or Aviation Calculator AvCalc have ads?

Neither Wind Triangle nor Aviation Calculator AvCalc shows ads.

### Which is updated more often, Wind Triangle or Aviation Calculator AvCalc?

Wind Triangle ships an update every 2 months, and Aviation Calculator AvCalc every 3 months. Most recently, Wind Triangle was updated on November 9, 2026 and Aviation Calculator AvCalc on November 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.*