# igc Viewer vs Glider Polar

The clearest difference is price: igc Viewer at Free against Glider Polar's $2.99. igc Viewer also leads on update cadence (every 4 months vs every 21 months). Glider Polar's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 1). On ratings volume, ads, device support and iOS requirement there is nothing between them.

igc Viewer is free to download; Glider Polar costs $2.99 up front. igc Viewer sells 1 one-off in-app purchase. Glider Polar asks for nothing beyond the download.

Glider Polar holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

igc Viewer ships an update every 4 months, Glider Polar every 21 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | igc Viewer | Glider Polar |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/igc-viewer/id1428270954/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/glider-polar/id1608086488/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 21 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 82 MB | 2 MB |
| Requires iOS | 16.0 | **15.2** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hiroki Kijima](https://appshunter.io/developer/1326808571) | [Robert Walker](https://appshunter.io/developer/299475042) |

## What reviewers say

### igc Viewer

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

Easily open and view .igc flight log files directly from your device's file manager or share menu. This application processes your flight data, displaying it within seconds.

**Highlights:** Open .igc files, Use with File App, Share to app functionality, Fast file processing, Supports multiple devices

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

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


### Glider Polar

[App page](https://appshunter.io/ios/app/glider-polar/id1608086488)

This app predicts glider performance by allowing users to adjust gross weight and headwind. Experienced pilots can explore the impact of water ballast on glide ratio and speed, while beginners can visualize how wind and weight affect performance.

**Highlights:** Predicts glider glide performance, Adjustable gross weight, Adjustable headwind component, Shows effect of water ballast, Illustrates wind and weight impact

**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 Glider Polar free?

Glider Polar costs $2.99, with no in-app purchases.

### Which has better reviews, igc Viewer or Glider Polar?

Glider Polar is rated higher. igc Viewer averages 4.0 out of 5 from 2 ratings, while Glider Polar averages 5.0 from 1 ratings.

### Do igc Viewer or Glider Polar have ads?

Neither igc Viewer nor Glider Polar shows ads.

### Which is updated more often, igc Viewer or Glider Polar?

igc Viewer ships an update every 4 months, and Glider Polar every 21 months. Most recently, igc Viewer was updated on November 6, 2026 and Glider Polar 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.*