# SubStandard vs Flight Bag

SubStandard and Flight Bag both sit at 5.0 stars, but that hides the real split: 100% of Flight Bag's written reviews are positive against 0% of SubStandard's. Flight Bag also leads on update cadence (every 3 weeks vs every 7 months). SubStandard's advantage is iOS requirement (12.0 vs 15.0). On price, rating, ratings volume 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.

On the App Store both sit at effectively the same score — 5.0 for SubStandard against 5.0 for Flight Bag. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews are what separate them: 0% of SubStandard's written reviews are positive against 100% of Flight Bag's.

SubStandard ships an update every 7 months, Flight Bag every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | SubStandard | Flight Bag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/substandard/id1513656520/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/flight-bag-tools-for-pilots/id6467499953/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 33 MB | 61 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [iService Ottner Röck](https://appshunter.io/developer/1413717324) | [Ugur Sola](https://appshunter.io/developer/1708714792) |

## 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


### Flight Bag

[App page](https://appshunter.io/ios/app/flight-bag-tools-for-pilots/id6467499953)

This app offers a suite of essential tools for pilots to perform quick and practical calculations. It includes calculators for crew rest, night time, and log time, along with helpful reference guides and conversion tables. Designed for ease of use, it aims to assist pilots with common aviation-related tasks.

**Highlights:** Crew Rest Calculator, Night Time Calculator, Cold Temperature Altitude Correction, Log Time Calculator, NOTAM Abbreviations, Approach Path Calculator

**In-app purchases:** none


## Frequently asked questions

### Is SubStandard free?

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

### Is Flight Bag free?

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

### Which has better reviews, SubStandard or Flight Bag?

SubStandard and Flight Bag are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do SubStandard or Flight Bag have ads?

Neither SubStandard nor Flight Bag shows ads.

### Which is updated more often, SubStandard or Flight Bag?

SubStandard ships an update every 7 months, and Flight Bag every 3 weeks. Most recently, SubStandard was updated on November 3, 2026 and Flight Bag on November 3, 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.*