igc Viewer vs Lufty
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
igc Viewer
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.
- Open .igc files
- File App integration
- Share to app functionality
- Handles various file sizes
- Displays flight information
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How to use. - Open File App. (Alternatively, click the share button and open with 'copy to igc viewer') - Select [.igc] file. - The app will open igc file (it might take a few seconds depending on the file size).
Lufty
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.
- Offline maps and airspaces
- Intuitive task planning
- 29 navigation instruments
- WeGlide integration
- Bluetooth/Wi-Fi LXNAV integration
- Free 60-day trial
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Brand new in-flight navigation & planning app for glider pilots Lufty application was designed to help you chase your sporting goals as well as to keep you safe while flying. Lufty's main features: • Designed to work without any connection to the internet (airspaces, maps, terrain elevation model of 88 countries available for download) • Intuitive task planning • Ready for AAT, FAI, Racing tasks as well as just for flying for fun • 29 navigation instruments (everything you would expect from AAT's task Delta time to Final Glide instrument) • WeGlide integration for sharing your flights with the gliding community • Declaration to loggers ••• integrates via Bluetooth with LXNAV devices ••• integrates via Wi-Fi with LX navigation devices ••• more integrations coming very soon Terms of use: https://lufty.app/terms-of-use/ Privacy Policy: https://lufty.app/privacy-policy/ Lufty subscription: First 60 days are free of charge. In order to use Lufty you need to register in the app and select one of our subscription plans. First 60 days are free of charge. If you continue using the app after this period, you will be charged according to selected subscription plan. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | igc Viewer | Lufty |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 50.0% of reviews — better | 20.0% of reviews |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 97 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroki Kijima | Lufty.app |
Customer experience
igc Viewer
Lufty
In-app purchases
igc Viewer
- Flight Computer Mode$4.99
Lufty
- 6-Month Subscription2 Months trial$34.996 Months
- 12-Month Subscription2 Months trial$49.991 Year






