# fx12 - Free-Flight Models — Favionics timer & GPS maps > Companion app for fx12, fxRDT, and fxWS devices, offering real-time parameter control and data visualization. (iPhone/iPad app by Favionics.) - Source: https://appshunter.io/ios/app/fx12-free-flight-models/id1518495325 (this page in markdown: same URL + `.md`) - Developer: [Favionics](https://appshunter.io/developer/495997736) - Category: Utilities - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 18.0 · 53 MB - Languages: American English - Released: 2023-04-20 - Data updated: 2026-08-22 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/fx12-free-flight-models/id1518495325/reviews.md ## What is fx12? fx12 is the companion app for Favionics fx12 / fx24 timers, fxRDT, and fxWS devices. It gives you a clear interface to view and change parameters on fx12 and fxRDT, including altimeter and GPS data in real time. The optional Apple Watch app shows live telemetry and lets you RDT the model from your wrist. This app may use your location even when it isn’t open, which can decrease device battery life. Continued use of GPS running in the background can dramatically decrease battery life. DEVICES & CONTROL • Connect fx12 , fxRDT recorders, and fxWS wireless sensors over Bluetooth • View and edit timer programs, DT, hook, and servos • Save and load programs; compare changes before loading onto a model • Real-time altimeter and GPS data from the model • Model list indicators for sleep mode and live RDT data • Optional beep when switching parameters (can be disabled in Settings) • Custom numeric keyboard with +1 / −1 steps and Done for faster editing MAPS & LIVE TRACKING • Native GPS map with follow mode and pilot steer cues • Terrain view for better spatial awareness • Automatic zoom as you approach the model — easier to use while riding a bike • Markers show GPS freshness and time since last GPS data • Accuracy circle when GPS reception is weak • Optional Timer view to monitor flight time and key parameters (enable in Settings) FLIGHTS, CHARTS & ANALYSIS • Clean charting for altitude and flight data • Share flights as full .fx12alti data for easy re-import • Flight analysis — launch altitude detection, BNT analysis, and dedicated metric charts COMPETITION & FIELD USE • Competition mode with Practice / Competition switch on Model Box • Flight-period schedules and minimum DT warnings (DT turns red when below the minimum) CLOUD BACKUP & MIGRATION • Back up and restore to iCloud and Google Drive • Keep multiple backups so you can roll back if data is corrupted • Restore models when migrating to a new phone • Selective restore — choose which models to bring back • Clear Google account status and sign-out from the app • Guidance when importing data from older Favionics apps APPLE WATCH • Real-time telemetry on the Watch • RDT the model from your wrist NATIVE iOS EXPERIENCE • Major native SwiftUI rewrite with a modern glass UI (iOS 18+) • Faster, more reliable Bluetooth connect and reconnect • Designed for competition free-flight pilots who need dependable control at the field ## Key features - Real-time altimeter and GPS data viewing - Parameter control for compatible devices - Improved charting with intuitive UI - New terrain view on maps - Dedicated timer view for flight parameters - 3D flight visualization (Beta) - Advanced flight analysis tools (Beta) ## Frequently asked questions about fx12 ### What devices is fx12 v3 compatible with? fx12 v3 is designed as a companion app for fx12, fxRDT, and fxWS devices. It allows you to view and change parameters for these specific models. ### Does fx12 v3 use location services? Yes, fx12 v3 may use your location even when the app is not open. Continued use of GPS in the background can significantly decrease device battery life. ### What are the new features in version 3.0.06 of fx12 v3? Version 3.0.06 introduced an improved charting engine, redesigned popup dialogs, new icons for model status, map enhancements like terrain view, a new timer view, and improvements to iCloud & Google backup. ### Can I view flight data in 3D with fx12 v3? Yes, fx12 v3 offers a beta feature for 3D flight visualization. You can access this by opening the GPS map chart, tapping on it, and selecting the 3D option to explore your flight path. ### How does fx12 v3 handle data backups? fx12 v3 now saves up to 4 backups, allowing you to roll back if data becomes corrupted. You can restore models from iCloud or Google when migrating to a new phone. ### Is fx12 v3 available on Apple Watch? Yes, there is an optional Apple Watch app for fx12 v3 that shows real-time telemetry and allows you to remotely control the model (RDT). ### What is the update frequency for fx12 v3? The app has seen recent updates, with version 3.0.15 released on April 25, 2026, indicating ongoing development and bug fixes. Previous updates include 3.0.06, 3.0.07, 3.0.10, and 3.0.14. ### Does fx12 v3 have ads? No, fx12 v3 does not contain advertisements. The app is free to download and use without any ad interruptions. ## Version history (last 5 releases) ### 4.0.00 — 2026-08-19 Major rewrite — Completely rebuilt in native UI. New glass UI for modern iOS (iOS 26 look and feel; requires iOS 18 or later). Fresh Model Box, device screens, and settings — not a skin on the old Flutter app. Faster, more reliable Bluetooth — Quicker connect and reconnect, clearer device state, and more stable links to timers, RDTs, and wireless sensors. Native map & GPS — MapKit flight maps with follow mode, markers, and pilot steer cues. Competition mode — Switch Practice / Competition on Model Box. Flight-period schedules with minimum DT; programmed DT turns red when below the minimum. New numeric keyboard — +1 / −1 to step values; +/− for sign; Done to dismiss. Program compare — Side-by-side diff of DT, hook, servos, and options before loading a saved program. Smarter cloud restore — Pick which models to restore from iCloud instead of replacing everything at once. Stability & polish — Faster startup, clearer program-upload feedback, and more reliable day-to-day cloud sync. ### 3.0.15 — 2026-04-25 Fix bug with version update ### 3.0.14 — 2026-04-20 Flight Sharing: chart share now exports full flight data in .fx12alti format for easy re-import. Stability: improvements across restore/import, WS naming, and GPS-related flows. Google Sign-In: more reliable login with improved session restore. Cloud Files: improved iCloud/Google Drive handling for more dependable sync and import/export. Old FX Legacy App Migration: clearer guidance and better angle/data restore. BLE Reliability: connection improvements with clearer warning behavior. ### 3.0.10 — 2026-03-15 - Accuracy circle in map when GPS reception is weak - Fix bug in step names rename ### 3.0.08 — 2026-03-02 - fix issue with model detection - improved flight analysis for glide - improved legend for multi charts ## More apps by Favionics - [fx12](https://appshunter.io/ios/app/fx12/id1089760330) - [GCodeReader CNC](https://appshunter.io/ios/app/gcodereader-cnc/id6782029376) All apps by Favionics: https://appshunter.io/developer/495997736 ## Related topics [fx12 v3](https://appshunter.io/ios/topics/fx12-v3) · [fx12](https://appshunter.io/ios/topics/fx12) --- *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 2026-08-22.*