How It Works

How and why SilentAlarm works.

SilentAlarm uses vibrations to wake you up naturally, even if you're a really deep sleeper. You wake up on time and don't oversleep. But why does it actually work?

If regular sound alarms worked for everyone, oversleeping wouldn't be such a big problem. But for many people, sound alarms don't work—even when on full volume.

That's because sound alarms depend on your auditory system (your ears and the part of your brain that hears)

When you're asleep, especially in deep sleep, your brain tries to block out sounds to protect your rest. Your brain can also get used to sounds that repeat over and over. Scientists call this habituation—it means your brain learns to ignore the sound.

That's why your alarm doesn't wake you up. The sound has to go through your brain first. If your brain decides the sound isn't important (which happens a lot with sounds that repeat), nothing happens. You keep sleeping.

SilentAlarm doesn't try to wake your ears. It wakes your nervous system.

The haptic vibrations touch your body directly and:

Stimulate neural activation in your skin → these signals skip past the auditory filter → they go straight to your somatosensory system (the part of your nervous system that controls waking up).

Your body treats the vibration like physical touch, not background noise.

This matters because your brain is much worse at ignoring touch than sound—even when you're in deep sleep.

In simple terms:

Sound alarms ask your brain to wake up. SilentAlarm tells your body to wake up.

That's why it works when sound alarms don't - especially if you:

• Sleep deeply
• Oversleep regularly
• Ignore alarms without meaning to
• Turn off alarms without even knowing it
• Share a bed and need to stay quiet