Understanding the result
The targets use common reentrant high-G tuning: G4 C4 E4 A4. Cents show how far the played string is from the selected target.
Select the string you are tuning and pluck it gently. The common high-G ukulele tuning is shown here.
Play one note at a time in a quiet room. A4 reference: 440 Hz.
The targets use common reentrant high-G tuning: G4 C4 E4 A4. Cents show how far the played string is from the selected target.
The G target is for high-G tuning; low-G instruments should use G3 in the Chromatic Tuner.
Many ukuleles use reentrant tuning, where the fourth string is a high G.
Use the chromatic tuner and aim for G3 on the fourth string.
Not with these presets. Baritone ukulele commonly uses D G B E, so use the Chromatic Tuner for those notes.