One phone, every floor
No extra hardware. Reading air pressure, tilt and speed together, it filters out hills on the road and counts only the garage ramps you drive up or down.
Parking floor, saved automatically
Your parking floor,
remembered.
B1B2 counts the floors as you drive down into a parking garage and saves your floor when you park. No need to open the app or tap anything.
iPhone · iOS 26 or later
What’s said in the ad (Korean)
[Elevator chime] In the elevator, she hesitates between B1 and B2. “B1? B2? Where did I park?”
“How did I come in yesterday? No, wait, did I see the floor when I got out? Oh, that was the day before, not yesterday…”
She gets off at B1 and presses her car key. Nothing. [Music stops] “It’s not here…”
Her Lock Screen shows “B2 · Parked”. “Oh, it was B2!” By the B2 pillar she presses the key and her car blinks. [Three beeps]
“Your parking floor, B1B2 remembers.” The app that remembers your parking floor. On iPhone. Free at launch.
Just park
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Drive in
GPS gets you to the garage entrance. Inside, where GPS doesn’t reach, your iPhone’s sensors count the ramps you drive up or down.
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Park
When you park, your floor, place and time are saved on their own, with a silent “Parked on B2” notification. Nothing to confirm.
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Find it again
See your floor in the app or in a Home Screen or Lock Screen widget. If it’s wrong, fix it with Edit.
Just what you need
Decides only when sure
When it’s sure, your floor is saved quietly. When it isn’t, it asks “Did you park on B2?” — press and hold the notification to answer.
Knows the building
It checks Korea’s public building register for how many basement levels a building has, and re-works uncertain floors from anonymous records of earlier visits.
On your Lock Screen when you leave
Turn it on and it learns when you usually leave, then shows your floor on the Lock Screen around that time — or the whole time you are parked.
Knows your usual floors
Every parking is saved, with a chart of the floors you use most. Tap any past record to fix it.
Stays on your device
Your records stay on your iPhone. Latitude and longitude are never sent to the developer’s server. No account, no ads.
B1B2 launches on the Korean App Store first. All features are free during the initial period in Korea; paid options may be introduced later.
The app is in Korean for now and is being tuned in parking garages in Korea. Multi-storey garages above ground and mechanical parking may ask for the floor more often. If something doesn’t work for you, let us know.