Combine spinach, green apple, frozen pineapple, cucumber, ginger, coconut water, lime juice, and chia seeds in a high-speed blender.

Blend on high speed until the mixture is completely smooth and creamy, about 1-2 minutes. If the smoothie is too thick, add a splash more coconut water.

Taste and adjust sweetness or tartness if desired. For a thinner consistency, add a few ice cubes and blend again briefly.

Pour into a glass and serve immediately for the best flavor and nutrient profile.