Is this thing like the BAC calculator??

I had a good time last night. I drank 12 white claws between 8pm-1am. It's currently 12pm now. I used the BAC online calculator and it estimates based off weight and time that I'm still at 0.11% BAC level???? Should I even trust blowing into intoxalock right now??? I feel completely 100% sober. But I'm scared to blow if this stupid calculator is estimating I'm still $h!t faced 14 hours after my last drink. Like can anyone here give me some kind of real non judgmental "jUsT dOn'T dRiNk AnD tHeN yOu KnOw YoUr SoBeR" advice??? I need real normal person experience not just being shamed by online anti alcohol bs shaming.