A new and distinct Malus domestica Mill. apple tree named ‘Smeralda’ particularly characterized by having a compact habit with short branches and therefore very easy to manage. Precocious fruit bearing. Consistent high productivity with no tendency to biennial bearing. Resistant to scab. The ripening time is 30 days before ‘Granny Smith’. The fruit is medium-large with a smooth, uniform green color. The fine, crispy, juicy, pleasant flesh is yellow with an excellent flavour, feeling fresh in the mouth because of its high sugar content and elevated acidity. The taste is similar to ‘Granny Smith’ but sweeter and more fragrant. Long storage capacity and long shelf life.