Duolingo Pillow
Learn a language overnight
Duolingo Pillow launched on April 1, 2016 with 139 votes, #228 of 4,301 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 10 years on.
What it does
The Duolingo Pillow
Our state of the art synthetic fibers encourage development in the cerebral cortex, which improves language retention. Our proprietary algorithm uses Morse code to subtly teach your brain new language vocabulary and concepts. Using high frequency sounds, the pillow transmits audio samples that teach youfrom pillow.duolingo.com
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