# PC vs SubStandard

The clearest difference is rating: SubStandard at 5.0 against PC's 3.0. SubStandard also leads on iOS requirement (12.0 vs 16.0). PC's advantage is review sentiment (19% vs 0%). On price, ratings volume, update cadence and ads there is nothing between them.

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

SubStandard holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews complicate that: 19% of PC's written reviews are positive against 0% of SubStandard's, so the app with the better star average is not the one people write more warmly about.

PC ships an update every 5 months, SubStandard every 7 months. The most recent releases landed on September 20, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | PC | SubStandard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/pc-12-calculator/id470906404/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/substandard/id1513656520/reviews)** |
| Number of ratings | 2 | 2 |
| Positive reviews | **18.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Free | Free |
| Size | 15 MB | 33 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pilatus Aircraft Ltd.](https://appshunter.io/developer/470906408) | [iService Ottner Röck](https://appshunter.io/developer/1413717324) |

## 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


### SubStandard

[App page](https://appshunter.io/ios/app/substandard/id1513656520)

This aviation utility app simplifies applying cold temperature corrections for altitudes. It allows users to save frequently used altitude sets for rapid retrieval, enhancing efficiency in flight planning.

**Highlights:** Cold temperature corrections, Altitude set storage, Quick access to saved altitudes, Easy to use interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PC free?

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

### Is SubStandard free?

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

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

SubStandard is rated higher. PC averages 3.0 out of 5 from 2 ratings, while SubStandard averages 5.0 from 2 ratings.

### Do PC or SubStandard have ads?

Neither PC nor SubStandard shows ads.

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

PC ships an update every 5 months, and SubStandard every 7 months. Most recently, PC was updated on September 20, 2026 and SubStandard on September 9, 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.*