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Power Tools: Rotor OCA

· v1.4.5
★★★★☆ (24) ↓ 1,000 downloads 4 Free

About

If you would like to support further development: https://www.buymeacoffee.com/axl13 Thank you! ---==This is not an official Rotor App!==--- IMPORTANT: Make sure you don't have your Rotor as Bluetooth connection in the Garmin devices list. If you have it - remove it, disabling is not enough. This Datafield utilize the new ConnectIQ 3.1 BLE functionality to get the proprietary OCA metric from Bluetooth Smart (LE) enabled Rotor inPower® power meters. This data could help to fine tune the Optimal Chainring Position (OCP) for different type of bike setup, geometry, race type and terrain. OCA stands for Optimum Chainring Angle and is one of the proprietary metrics offered by ROTOR INpower and 2INpower. OCA is closely linked to ROTOR Q RINGS®, as it helps to find the proper chainring setup. --------- The RotorOCA Datafield will connect to the first Rotor power meter it finds. To use the app, switch your Rotor to ANT+ protocol on the Garmin device, and remove (!) the Bluetooth connection. The on the ride data will be recorded in the FIT file for further analysis.

What's new

1.4 - Added option to specify Device ID - Added option to report Rotor Power (BLE) 1.3.1 - Rebuild with the new SDK - Added support for the new devices 1.2.2 - Rebuild with the new SDK - Added support for the new devices 1.2.1 - Rebuild with the new SDK - Added support for the new devices 1.1.0 - Rebuild with the new SDK - Add support for new devices (Fenix 7, etc.) 1.0.10 - Rebuild with new SDK - Support for more devices 1.0.9 - Minor bug fixes 1.0.8 - Improve initial connection - Fix crash on the Datafield Removal 1.0.7 - Refresh SDK - Update Labels 1.0.6 - Added OCP metric to summary 1.0.5 - CIQ metrics in Garmin Connect - Better connection exceptions handling

Permissions

FitContributorBluetoothLowEnergy

Details

Compatible with 211 devices
Updated Mar 29, 2026
Open on apps.garmin.com ↗