Advanced Lung CareLLC

Incentive Spirometer Software — breath volume & duration from your camera

Allow camera access to begin Your browser will ask to use the camera — tap “Allow”. Then line the two dashed guides up with two printed numbers on the device to calibrate.

Camera

Device

Live volume

—mL

Duration

0.0s

ready — inhale to start the timer

Peak volume

—mL

Breath log 0 breaths

No breaths logged yet. Each completed breath records its peak volume and how long the piston took to reach that peak.

Progress

Log a couple of breaths and a trend will appear here — showing whether you're improving.

Calibrate the scale ›

Drag the two dashed lines onto two printed marks on the device, then set what volume each line sits on. Everything between them is read by interpolation, so pick two marks that are far apart (e.g. 500 and 5000).

Top line reads mL

Bottom line reads mL

The two solid side lines mark the left and right edges of the measuring column. Keep them just inside the cylinder so the mouthpiece tube and the goal-marker tab are excluded.

volume guides column edges detected piston top

Tune detection ›

The app finds the piston by color, then keeps the tallest, centered band — so a small marker riding the outside of the tube is ignored. Pick your piston’s color below (or tap the piston to sample it). Tip: set the left/right column guides to bracket just the clear tube, and turn on the debug overlay to see exactly what’s detected.

Show detection overlay

Piston color

Detected target Blue

Color tolerance 38°

Min saturation 34%

Min brightness 20%

Row fill needed 45%

Breath & voice ›

Auto-announce when a breath ends Speak the peak out loud Snap to nearest 500 mL Ignore device movement while positioning

Movement sensitivity 8

Minimum breath length 0.3 s

Auto-announce watches for the piston rising and then dropping back down. When it settles near the bottom again, that breath’s peak is locked in and read out. Anything shorter than the minimum above is treated as a phantom blip and not counted. “Ignore device movement” pauses breath detection while you’re moving the whole device into position (so lining it up doesn’t register as a breath) and resumes once it’s held steady.

Drag the 5000 & 500 lines onto your spirometer

0mL

0.0s

0pts

025005000

Target 3000 mL

Hold 2.0 s

Camera

Device

Tap Breathe In to start the camera.

Nice breathing!