# Full Scale HSI — Radio Navigation Trainer

> Radio Navigation Trainer (iPhone/iPad app by Chanon Mallanoo.)

- Source: https://appshunter.io/ios/app/full-scale-hsi/id6796811859 (this page in markdown: same URL + `.md`)
- Developer: [Chanon Mallanoo](https://appshunter.io/developer/6795595335)
- Category: Education, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-08-14
- Data updated: 2026-08-17
- User reviews in markdown: https://appshunter.io/ios/app/full-scale-hsi/id6796811859/reviews.md

## What is Full Scale HSI?

Full Scale is a radio-navigation procedural trainer that puts a glass-cockpit HSI and a moving map side by side — so you can finally see what the needles are telling you.

Drag the aircraft anywhere. Drag the stations. Swing the heading with your finger. The CDI, bearing pointers, TO/FROM flag and DME respond instantly, and the map shows you the geometry the instrument is describing. Wind the clock up to 8x and watch a whole intercept unfold in seconds.

BUILT FOR INSTRUMENT STUDENTS
• PFD-style HSI with course pointer, CDI, two bearing pointers and DME readouts
• Moving map with range rings, radials, course lines and your flown ground track
• Wind that actually drifts you — see heading and track split, find the correction that holds the course
• Holding patterns drawn at the size you would really fly them, with a live AIM entry-sector diagram
• DME arcs with lead-radial guidance and wind-corrected headings
• Marker beacons, NDB bearing work, station passage and the cone of confusion
• Approach-chart PDF overlays: import a plate, the paper disappears, the ink lands on your map

FREE TO TRAIN
The trainer is free to explore: the complete HSI and map, dragging, wind, the entry diagram, and three full exercises — a radial intercept, a DME arc and a holding entry — with 15 minutes of flight time every day. Setting up geometry costs nothing; only the running clock is metered.

FULL SCALE PRO — ONE PURCHASE, YOURS FOREVER
• Every exercise in the library, plus all future additions
• Publish your own holds — any fix, any course, left or right turns, timed or DME legs
• Build your own DME arcs — any radius, any radials
• Chart overlays and full nav-database editing, saved between sessions
• Unlimited flight time — no daily meter
No subscription. No account. No ads. No data collected.

Works on iPhone and iPad, portrait and landscape, with full VoiceOver support.

Full Scale is a training aid only. Its stations and geometry are placeholders on a training grid, not survey data. It is not for real-world navigation and is not a substitute for the aircraft flight manual or current publications. Not affiliated with any aircraft manufacturer or air force.


## Version history (last 1 release)

### 1.0 — 2026-08-14

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*