Whiz the kiwifruits in a blender until smooth and spoon the mixture into 2 tall glasses. Top each with a spoonful of yogurt, spreading the yogurt to the sides of the glasses.
Blend the mango to a purée with the orange or apple juice and spoon into the glasses. Top with another layer of yogurt.
Whiz the raspberries and push through a sieve over a bowl to extract the seeds. Check their sweetness (you might need to stir in a little honey if they are very sharp). Spoon the raspberry purée into glasses to serve.