The best alternatives to RelaxMyDog are Endel, The Dreamery, and Doglar. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
In The Dreamery in NYC, you can reserve nooks for 45 minutes at a time, at a cost of $25 per session. These nooks are basically giant wooden “O”s with curtains and soundproofed backing, and of course they’re stocked with Casper beds.