Discover the rebuilt fx12: faster Bluetooth, smarter GPS maps, interactive flight charts, competition tools, and easier program management for your Favionics models.
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
Ratings & Reviews
5.0
out of 5
1 Ratings
• Copy programs to another model, including saving to an offline model.
• Load factory defaults for fx12a, and compare saved programs without loading them.
• Keep earlier saved programs when saving again with the same name; new copies receive distinct names.
• Improved numeric editing with field-aware +1 / −1 steps and changes sent when you finish editing.
• Inspect flight charts with a tap, hold, or horizontal drag. Customize chart colors, line thickness, and fill.
• Clearer estimated flight times and consistent sink-rate readings in charts and tables.
• More reliable GPS updates and Bluetooth recovery after connection errors or firmware changes.
• Added FX12A firmware 4.00.32 and an option to hide safety altitude warnings.
• Fixed blank timer pages and improved program comparisons, RDT navigation, and overall stability.
Version 4.0.07
The developer, Favionics, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Rene Limberger
Size
55.5 MB
Category
Utilities
Compatibility
Requires iOS 18.0 or later.
iPhone Requires iOS 18.0 or later.
Mac Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.