Bubble Level — Spirit Level

A bubble level that respects you.

Bubble Level — Spirit Level turns your phone into a precise spirit level for hanging pictures, mounting shelves, leveling appliances, and checking any surface — with none of the junk that plagues this category.

PRECISE
• Reads to a tenth of a degree, smoothed like a real fluid vial
• Surface mode: bull's-eye level for tables, counters, and appliances
• Edge mode: tube level that works on any edge of your phone — the gauge rotates to stay upright however you hold it
• Set zero on any reference surface; hold a reading to write it down
• Haptic tick the moment you reach level — level a shelf without looking

HONEST
• No ads
• No permissions — the app can't even access the internet
• No data collected, no analytics, no tracking. Ever.
• Tiny download

THOUGHTFUL
• A clear, glanceable readout you can see from arm's length
• Green means level — the dial, the number, and a haptic tick all agree
• Dark instrument design that reads well on a workbench

Free, small, and exactly one thing done well.