# SubStandard vs Boeing 787 Training Guide Lite

The clearest difference is iOS requirement: SubStandard at 12.0 against Boeing 787 Training Guide Lite's 15.0. On price, update cadence, 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.

SubStandard ships an update every 7 months, Boeing 787 Training Guide Lite every 5 months. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | SubStandard | Boeing 787 Training Guide Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/substandard/id1513656520/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 33 MB | 697 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iService Ottner Röck](https://appshunter.io/developer/1413717324) | [Gustavo Legarreta](https://appshunter.io/developer/1506804238) |

## What reviewers say

### 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, Vision Pro support

**In-app purchases:** none


### Boeing 787 Training Guide Lite

[App page](https://appshunter.io/ios/app/boeing-787-training-guide-lite/id1611433169)

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

**In-app purchases:** none


## Frequently asked questions

### Is SubStandard free?

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

### Is Boeing 787 Training Guide Lite free?

Boeing 787 Training Guide Lite is free to download, with no in-app purchases.

### Do SubStandard or Boeing 787 Training Guide Lite have ads?

Neither SubStandard nor Boeing 787 Training Guide Lite shows ads.

### Which is updated more often, SubStandard or Boeing 787 Training Guide Lite?

SubStandard ships an update every 7 months, and Boeing 787 Training Guide Lite every 5 months. Most recently, SubStandard was updated on October 20, 2026 and Boeing 787 Training Guide Lite on October 15, 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.*