WillSleep is a non-invasive neurostimulation device that improves sleep quality through transcutaneous vagus nerve stimulation (nVNS). The ultra-compact device adheres to the neck via medical-grade electrode patches and delivers personalized electrical stimulation for 15 to 30 minutes daily. This stimulation promotes the secretion of neurotransmitters such as GABA, norepinephrine, and serotonin, alleviating symptoms of insomnia, stress, anxiety, and depression without medication. A 5-week clinical study showed an 82% improvement in sleep quality (PSQI) and an 80% reduction in insomnia symptoms (ISI), with strengthened brain connectivity between the frontal cortex and limbic system. The AI algorithm analyzes users’ biometric data from both sleep and daily activity to deliver customized stimulation. Sleep progress and stimulation history can be tracked via a mobile app. The device’s ergonomic design and medical-grade materials ensure user comfort and ease of use.