# PC vs X

The clearest difference is rating: PC at 3.0 against X's 1.8. PC also leads on review sentiment (19% vs 0%). X's advantage is update cadence (every 3 weeks vs every 5 months) and iOS requirement (10.0 vs 16.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

PC holds the better App Store score, 3.0 against 1.8. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews point the same way: 19% of PC's written reviews are positive against 0% of X's.

PC ships an update every 5 months, X every 3 weeks. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PC | X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/pc-12-calculator/id470906404/reviews)** | [1.8 (4 ratings)](https://appshunter.io/ios/app/x-wind-tail-wind/id1406014326/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | **18.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 15 MB | 18 MB |
| Requires iOS | 16.0 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pilatus Aircraft Ltd.](https://appshunter.io/developer/470906408) | [Hiroyuki Nishijima](https://appshunter.io/developer/1389796249) |

## What reviewers say

### PC

[App page](https://appshunter.io/ios/app/pc-12-calculator/id470906404)

This tool assists pilots in verifying weight and balance and calculating aircraft performance for various Pilatus PC-12 models. It includes a crosswind calculator and is intended for plausibility checks.

**Highlights:** Weight and balance verification, Takeoff, climb, cruise, landing performance calculation, Supports multiple PC-12 aircraft variants, Crosswind calculator, Plausibility checks for aircraft data

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

**In-app purchases:** none


### X

[App page](https://appshunter.io/ios/app/x-wind-tail-wind/id1406014326)

This utility helps pilots calculate wind speed limits based on crosswind and tailwind conditions. It provides essential data for flight planning and safety.

**Highlights:** Crosswind calculation, Tailwind calculation, Wind speed limit determination, Flight planning aid

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PC free?

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

### Is X free?

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

### Which has better reviews, PC or X?

PC is rated higher. PC averages 3.0 out of 5 from 2 ratings, while X averages 1.8 from 4 ratings.

### Do PC or X have ads?

Neither PC nor X shows ads.

### Which is updated more often, PC or X?

PC ships an update every 5 months, and X every 3 weeks. Most recently, PC was updated on October 16, 2026 and X on October 24, 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.*