Bubble Level

ZenIRL

About this game

A real 2-axis spirit level for Wear OS — a precise bubble level on your
wrist, no phone and no internet required. Lay the watch flat on any
surface and the bubble drifts to show tilt, centering and turning green
the moment you're level. Tap to zero it against any reference surface.
That's the whole tool: fast, accurate, and always with you.

Built for the round watch screen, the bubble moves naturally on both
axes — pitch and roll — so you can level a shelf, a picture frame, a
table leg, or a tripod head without digging out a hardware level. Live
numeric readouts show pitch and roll in degrees so you can dial in an
exact angle, not just "close enough."

Need to level against a surface that isn't perfectly flat? Tap once to
zero (calibrate) the level against whatever it's resting on — now that
surface reads as 0.0°, and you can match any other surface to it. Tap
again to reset back to true horizontal.

When the watch reaches level, a gentle haptic tick lets you know without
looking — handy when the watch is flat on a surface and out of your line
of sight.

Features
• True 2-axis spirit level — pitch and roll at once
• Animated bubble that centers and turns green when level
• Live numeric pitch and roll readout in degrees
• Tap to zero / calibrate against any surface; tap again to reset
• Gentle haptic tick the moment you reach level
• Designed for the round watch screen
• Standalone — no phone required
• Fully offline — no ads, no in-app purchases, no internet permission

How it works
• Lay the watch flat on the surface you want to check
• Watch the bubble drift — chase it to center
• Green bubble + haptic tick = level
• Tap to zero against the current surface; tap again to reset

Tips
• Rest the watch directly on the surface rather than holding it — your
wrist adds tilt.
• Use the numeric readout when you need an exact angle rather than just
"level."
• Zeroing against a known-good reference lets you match many surfaces to
the same plane.

Built for Wear OS 3+. Standalone, offline, no tracking.

Why this on a watch?
A spirit level is the one tool you never have when you need it — but your
watch is already on your wrist. The accelerometer that powers fitness
tracking is also a precise tilt sensor, so a proper 2-axis level fits
naturally on the round screen. No app to dig out of a drawer, no phone to
unlock. Lay it flat and read it.

The accelerometer is read entirely on-device. Nothing leaves the watch.

What’s new

• 2-axis bubble level using the accelerometer
• Bubble centers and turns green when level
• Live pitch / roll readout in degrees
• Tap to zero / calibrate; tap again to reset
• Haptic tick when level