# igc Viewer vs opti*Glide

The clearest difference is in-app purchases: opti*Glide at none against igc Viewer's 1. igc Viewer's advantage is iOS requirement (13.1 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. igc Viewer sells 1 one-off in-app purchase. opti*Glide asks for nothing beyond the download.

igc Viewer ships an update every 4 months, opti*Glide every 6 months. The most recent releases landed on September 28, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | igc Viewer | opti*Glide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/igc-viewer/id1428270954/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 97 MB | 18 MB |
| Requires iOS | **13.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hiroki Kijima](https://appshunter.io/developer/1326808571) | [Jens-Christian Henke](https://appshunter.io/developer/1212416786) |

## What reviewers say

### igc Viewer

[App page](https://appshunter.io/ios/app/igc-viewer/id1428270954)

Easily view flight data from .igc files. Simply open the file through your device's File App or share it directly to the application. It handles various file sizes, displaying your flight information efficiently.

**Highlights:** Open .igc files, File App integration, Share to app functionality, Handles various file sizes, Displays flight information

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flight Computer Mode | $4.99 | one-time |


### opti*Glide

[App page](https://appshunter.io/ios/app/optiglide/id6449526196)

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

**In-app purchases:** none


## Frequently asked questions

### Is igc Viewer free?

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

### Is opti*Glide free?

opti*Glide is free to download, with no in-app purchases.

### Do igc Viewer or opti*Glide have ads?

Neither igc Viewer nor opti*Glide shows ads.

### Which is updated more often, igc Viewer or opti*Glide?

igc Viewer ships an update every 4 months, and opti*Glide every 6 months. Most recently, igc Viewer was updated on September 28, 2026 and opti*Glide on September 19, 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.*