# igc Viewer vs Lufty

The clearest difference is review sentiment: igc Viewer at 50% against Lufty's 20%. igc Viewer also leads on rating (4.0 vs 3.7). Lufty's advantage is update cadence (every 3 weeks vs every 4 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. igc Viewer sells 1 one-off in-app purchase and Lufty sells 2 in-app purchases, starting at $34.99 per 6 months. Whichever you choose, the download price is not the number that matters.

igc Viewer holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 50% of igc Viewer's written reviews are positive against 20% of Lufty's.

igc Viewer ships an update every 4 months, Lufty every 3 weeks. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | igc Viewer | Lufty |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/igc-viewer/id1428270954/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/lufty/id1555496439/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | **50.0% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 97 MB | 83 MB |
| Requires iOS | 13.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hiroki Kijima](https://appshunter.io/developer/1326808571) | [Lufty.app](https://appshunter.io/developer/1555496441) |

## 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 |


### Lufty

[App page](https://appshunter.io/ios/app/lufty/id1555496439)

This app provides offline in-flight navigation and planning tools for glider pilots. It offers task planning, numerous navigation instruments, and integration with logging devices and the gliding community. Enjoy a free trial before committing to a subscription.

**Highlights:** Offline maps and airspaces, Intuitive task planning, 29 navigation instruments, WeGlide integration, Bluetooth/Wi-Fi LXNAV integration, Free 60-day trial

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6-Month Subscription | $34.99 | per 6 months |
| 12-Month Subscription | $49.99 | per year |


## Frequently asked questions

### Is igc Viewer free?

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

### Is Lufty free?

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

### Which has better reviews, igc Viewer or Lufty?

igc Viewer is rated higher. igc Viewer averages 4.0 out of 5 from 2 ratings, while Lufty averages 3.7 from 3 ratings.

### Do igc Viewer or Lufty have ads?

Neither igc Viewer nor Lufty shows ads.

### Which is updated more often, igc Viewer or Lufty?

igc Viewer ships an update every 4 months, and Lufty every 3 weeks. Most recently, igc Viewer was updated on September 24, 2026 and Lufty on September 23, 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.*