I've found it helpful – tinnitus help Review

I find that when my tinnitus is overwhelming, or when its keeping me up at night, the sounds generated by this app can provide very helpful relief. You match a tone generated by the app with the pitch of your tinnitus and layer in soothing sounds that play over the tone. As others have commented, its a bit tricky to understand, and the UI is indeed not good, but I appreciate that the app developers didn't let that hold them back from making this helpful app available.
Review by campanie on tinnitus help.