Why Some Heavy Sleepers Need More Than a Phone Alarm
The phone alarm is the default alarm tool for most people — because it is already there and it is free. But the phone alarm was designed as a notification device, not a sleep tool. For most people, that distinction does not matter. For heavy sleepers, it is the reason they are still looking for a solution.
The Fundamental Mismatch
A phone alarm is a software feature in a device whose primary goal is to maximise screen time. Its alarm function is basic — it plays a sound at a set volume, and it vibrates if you hold the phone. The vibration motor is optimised for haptic notifications — short, subtle pulses. This is not a waking mechanism for heavy sleepers. It is a notification for someone who is already awake.
What Heavy Sleepers Actually Need
A heavy sleeper's alarm needs: a haptic motor designed for high-intensity arousal, not low-intensity notification; worn on the body, not placed across the room; customisable escalation patterns that match individual sleep depth; and a device with no distracting features that encourages returning to sleep. ONYX was designed to all of these specifications.
The Pattern That Tells You to Switch
If you have ever hit snooze on your phone alarm without remembering doing so, if your phone alarm has ever "not gone off" despite being set correctly, if you have needed to set multiple phone alarms as a workaround — these are all signals that your phone alarm is insufficient. ONYX is the replacement for that failing system.


















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