Currently, none of my apps and clock faces are available for the new Fitbit Versa 4 and Sense 2 (released September 24, 2022). Though I would like to add support for Fitbit’s latest smartwatches, Fitbit has not provided the needed tools and documentation for developing for these watches. It is unclear if or when Fitbit will provide the needed tools and documentation to third-party developers like myself.
My apps and clock faces are compatible with the Fitbit Versa, Versa Lite, Versa 2, Versa 3, and Sense smartwatches. If your looking to buy a Fitbit, perhaps consider purchasing an older model at a now discounted price.