[_AzMoo]

Do you share a room/bed with a partner? I find if I wake up early it disturbs my wife's sleep.

[Cthulhu_]

How long have you been doing this for? Because people do get used to things like that over time. My girlfriend usually sleeps right through me getting up at night.

[perplex]

Yes I share a bed and I use the iPhone built in alarm on lowest volume and typically silence it within seconds.

[0verAchiever]

Get a smart watch/band with alarm functionality. It will wake you up with vibrations on your wrist, no sound.