# SubStandard vs FFBrief

The clearest difference is in-app purchases: SubStandard at none against FFBrief's 1. SubStandard also leads on iOS requirement (12.0 vs 17.0). FFBrief's advantage is update cadence (weekly vs every 7 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. FFBrief sells 1 in-app purchase, starting at $4.99 per year. SubStandard asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for SubStandard against 5.0 for FFBrief. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

SubStandard ships an update every 7 months, FFBrief weekly. The most recent releases landed on September 9, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | SubStandard | FFBrief |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/substandard/id1513656520/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/ffbrief/id6764127279/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | **Free** | Subscription |
| Size | 33 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [iService Ottner Röck](https://appshunter.io/developer/1413717324) | [DONALD STEVEN SIEGEL](https://appshunter.io/developer/1887120921) |

## 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

**In-app purchases:** none


### FFBrief

[App page](https://appshunter.io/ios/app/ffbrief/id6764127279)

This app uses AI to analyze weather briefings from ForeFlight, providing instant go/no-go recommendations and hazard detection. It simplifies complex aviation weather data into plain language, offering pilot advice and timezone conversions.

**Highlights:** AI-powered weather briefing analysis, Go/No-Go recommendation with reasoning, VFR, MVFR, IFR, LIFR classification, Hazard detection (thunderstorms, icing, etc.), Pilot advice on altitude and timing, UTC to local timezone conversion, ForeFlight integration via share sheet

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FFBrief Annual | $4.99 | per year |


## Frequently asked questions

### Is SubStandard free?

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

### Is FFBrief free?

FFBrief is free to download, with in-app purchases available.

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

SubStandard and FFBrief are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do SubStandard or FFBrief have ads?

Neither SubStandard nor FFBrief shows ads.

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

SubStandard ships an update every 7 months, and FFBrief weekly. Most recently, SubStandard was updated on September 9, 2026 and FFBrief on August 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*