The Tymewear App can connect to Bluetooth devices to record and display your data such as: 

• Indoor bike trainers such as Garmin Tacx, Wahoo Kickr, Elite and Saris
• Power meters including SRM, SRAM, Shimano, Favero, Rotor, Garmin, Quarq, 4iiii, Stages and Power2Max
• Sports sensors such as Stryd*

How to Connect External Sensors

Erg Compatibility
Smart trainers require Bluetooth FTMS capability to allow erg-mode. Some may only allow the power data to be displayed without erg-mode control/ The following Ergs are known to be incompatible as they don't have the capabilities:

Garmin Tacx Flux 2, Wahoo Kickr Rollr, Wahoo Kickr Snap, Wahoo Kickr V1 and V2, Wattbike Atom Gen 1, Saris / CycleOps Hammer 1


Hardware Compatibility
Hammerhead, Wahoo, Suunto and Coros do not yet natively support / integrate with the Tymewear Breathing Sensor. 

An external developer has created a Hammerhead extension for the Karoo 3. This is not validated and supported by Tymewear and can be found here.

The native Wahoo integration for Tymewear is planned for release in 2026. 


Important notes on compatibility
Gym Bikes may not support the same connection standards as smart trainers. Some require additional applications or workarounds.

Ensure your sensors are up-to-date with the latest firmware

Some external sensors like *Stryd or core can prevent the Tymewear sensors from connecting (as they block too many recorded datafield). This can be solved by removing them and by reducing the number of datafields.

The core sensor prevents other Connect IQ sensors from working and they have "Display Option" setting that needs to be set to 32 which reduces they number of recorded fields they block.

The Concept2 BikeErg with PM5 needs to be updated to the latest firmware version. 

Garmin watches and bike computers can record and display data from the VitalPro breathing sensor and heart rate sensor with the Connect IQ App and synchronises activities with your Tymewear Account.
Garmin Bike Computer Setup  | Garmin Watch Setup

Importing activity data from other devices

For other sports hardware we are working with brands for full integration of Tymewear and until then, have solutions that enable you to import training data into Tymewear. 

If your sports device does not yet provide compatibility with Tymewear, you can still synchronise your data. Follow these steps to import .fit file activity data. This will then synchronise / merge the data so that all data becomes available in the Tymewear Dashboard and Tymewear App. 

Step 1: Use the Tymewear App to record your activity.

Step 2: At the same time,  record your activity your other device. 

Step 3: In the Tymewear Dashboard - locate the activity and then import the .fit file that was recorded on your other device. 

• Drag and drop the .fit file into the screen or,
• Select an Activity and then click the top right info icon. You can upload .fit file. 

After uploading a file, it can take a few hours for the new data to process and merge. 

Tip: Don’t forget, inside the Tymewear App you can connect external Bluetooth devices and capture the data in your activity. Keep in mind, external sensors need to stay in range of the smartphone during the activity.

Guides for exporting .fit files from other platforms

For external platforms, here are quick links for their FAQs or guides for exporting activity data as .fit files. Then follow the import steps above to connect this with your Tymewear activity. 

Export .fit files for: Garmin Connect | Strava | Zwift | TrainerRoad | TrainingPeaks | Coros | Suunto | Stryd |  Polar | Wahoo

Peloton: Unfortunately Peloton does not allow the direct export of activity data. There are some third-party apps that can export data, in this case you need a .fit file format and can follow the steps above. As an alternative, devices such as the DFC Data Broadcaster allow you to stream the Peloton power data and in the Tymewear App you can then connect as an external sensor to receive the data.