# SubStandard vs Glide AI

SubStandard and Glide AI both sit at 5.0 stars, but that hides the real split: 100% of Glide AI's written reviews are positive against 0% of SubStandard's. Glide AI also leads on update cadence (every 10 days vs every 7 months). SubStandard's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Glide AI sells 1 in-app purchase, starting at $29.99 per month. 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 Glide AI. 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 Glide AI's.

SubStandard ships an update every 7 months, Glide AI every 10 days. The most recent releases landed on October 20, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | SubStandard | Glide AI |
| --- | --- | --- |
| 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/glide-ai/id6447986025/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 10 days** |
| Monetization | **Free** | Freemium |
| Size | 33 MB | 101 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) | [BoldStratus Inc.](https://appshunter.io/developer/1516548667) |

## 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


### Glide AI

[App page](https://appshunter.io/ios/app/glide-ai/id6447986025)

This app provides quick, plain-language answers to aviation-related questions using official documents and live data. It offers a free tier for basic queries and a Pro subscription for advanced features like custom document uploads and detailed weather reports.

**Highlights:** AI-powered aviation question answering, Access to aviation manuals and regulations, Live aviation weather reports (METARs, TAFs), Aerodrome, airspace, and navaid data, Upload and query personal aviation documents, Vision AI for real-world analysis

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Glide AI Monthly Plan | $29.99 | per month |


## Frequently asked questions

### Is SubStandard free?

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

### Is Glide AI free?

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

### Which has better reviews, SubStandard or Glide AI?

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

### Do SubStandard or Glide AI have ads?

Neither SubStandard nor Glide AI shows ads.

### Which is updated more often, SubStandard or Glide AI?

SubStandard ships an update every 7 months, and Glide AI every 10 days. Most recently, SubStandard was updated on October 20, 2026 and Glide AI on October 22, 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.*