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

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

IGPSport BiNavi Bike Computer with the newest firmware provides native support for Tymewear Ventilation metrics. The heart rate and breathing sensor can be connected and ventilation metrics defined in the datafields for live display and recording.

Wahoo Bike Computer native support is expected to be released in Q2, 2026

Hammerhead, 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 by Tymewear however is reported to work well. Details and installation instructions are found here.



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

Due to Garmin limitations on the number of connect IQ sensors and the number of recorded datapoints, this can impact the number of simulteneous sensors that can be used and could cause the Tymwear connect IQ field to crash or not start. This can be resolved by removing other sensor and the datafields. 

On most devices the Stryd and Tymwear sensor can be used. 

The core sensor can cause other Connect IQ sensors including Tymewear to crash as it reserves a large number of datafields which blocks other sensors. They advise a "Display Option" setting that needs to be set to 32. Test by removing the core sensor and core datafield to verify that the Tymewear VitalPro connects, displays and records correctly. 

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

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.