Aerothrow
RC Control Surface Throw Meter
Only for iPhone
Free
iPhone
Measure your RC control surface throws with professional precision. Connect your sensors, set up, fly.
Aerothrow is the go-to tool for RC modelers who want to set their control surfaces with precision. No ruler, no template, no guesswork.
Attach one or two Bluetooth IMU sensors to your control surfaces, launch the app, and instantly get real-time angle and throw data, accurate to the millimeter.
WHAT AEROTHROW DOES
Real-Time Measurement
See both the angle and the throw of your control surface live. The signal is smoothed by an adjustable low-pass filter for a stable reading, even on a vibrating airframe.
Dual Sensor Support
Connect two sensors to monitor a pair of symmetric surfaces or differential surfaces. Aerothrow automatically computes and displays the throw and angle difference between the two sides.
Chord & Calculation Method
Enter your control surface chord and choose your calculation method: orthogonal projection (ORTHO) or actual chord (circle CHORD). Aerothrow converts angle to physical throw using the formula that matches your workflow.
Throw Alarms
Set a high and a low threshold. When the surface exceeds the limit, haptic feedback fires immediately, your hands are on the model, no need to watch the screen.
Session Peaks
Each session automatically records the maximum and minimum throw since the last "Set Neutral". Useful for checking that your servo isn't bottoming out.
Guided Calibration
A step-by-step calibration assistant walks you through accelerometer calibration (flat placement, countdown) and magnetometer calibration (free rotation in space). Calibration quality is shown in real time as a progress bar.
Sensor Management
Save your sensors. Aerothrow automatically reconnects them as soon as they are in range, even after a dropout.
Battery Level
The built-in LiPo battery of the sensor is displayed using a realistic non-linear discharge interpolation. No more surprises mid-session.
COMPATIBLE SENSORS
• WitMotion WT901BLECL
SETTINGS
• Units: mm · cm · m · inch
• Calculation method: ORTHO · CHORD
• Filter time constant: 20 ms → 300 ms
• Haptic feedback: on / off
• Surface type: ailerons, elevator, flaps, direction
WHO IS IT FOR?
Aerothrow is designed for pilots of electric and gas-powered fixed-wing aircraft, gliders, and fixed-wing drones. Anyone who wants repeatable, millimeter-accurate control surface settings, with zero approximation.
No more eyeballing. Just data.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, OLIVIER RANDIN, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- OLIVIER RANDIN
- Size
- 7 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.4 or later.
- iPhone
Requires iOS 26.4 or later.
- iPhone
- Languages
English and 2 more
- English, French, German
- Age Rating
4+
- 4+
- Copyright
- © 2026 Olivier Randin