Comment by apizon

I'm no expert on this subject but I don't think this is how trademark law works.

If you type "Cadence" (or any other common name really) in a trademark database you will literally get hundreds of result from various countries and industries. I think as long as you're not offering a similar service or at least working on the same industry there is no way they would have a case against you.

Also there are actually quite a few apps which use the name Cadence already (a bike app, an event planning app, a running app...)