Only the current version so far — new entries appear as the app ships updates.
Relax - White Noise Generator is a health & fitness app by SDesignDev with 100+ downloads (about 345 estimated). Released Mar 7, 2020. Install growth, rank history, SDKs and ad networks.
From the store listing: “Can't concentrate and relax? Can’t sleep at night? Relax app is for you”
