I'm living in Germany and since my insurance covers this, I'm giving Tinnitracks a try.
I've been doing it since June now, and there it definitely has some effect on my tinnitus.
Some days when I have that high pitched tinnitus (12700 Hz) in my ear, I immediately put on my headphones and "silence it" with Tinnitracks. After some hours listening to it, when I remove my headphones, my tinnitus is more silent than it was before. That effect just does not last too long (maybe 1-2 hours until it ramps up again). Of course this does not always work. Sometimes the tinnitus is coming from inside my brain, and then I won't be able to silence it in any way.
I am a Software Engineer working from home due to COVID-19 and it's easy for me to listen to it like 4-5 hours a day. Other people with other Jobs may find it difficult to put up the least required 90 minutes per day.
I will definitely continue with the therapy and keep you up to date with the results.