Yes, there is!
Micellar water has properties (specifically micelles) that gently remove impurities, makeup and excess oil from the skin. Micelles are so gentle and hydrating to the skin that there is no need to rinse afterwards, or cleanse the skin with an additional cleanser.
Meanwhile toners contain ingredients to address specific skin problems such as dry skin, acne, etc. There are a plethora of toners on the market that target a wide range of skin concerns and different formulations of toners help to balance the pH of skin after cleansing. By re-balancing the pH of the skin, toners help to strengthen the skin barrier, allowing problematic skin to get back on track.
The takeaway? Micellar waters cleanse your skin and are to be used as a first step in your skincare routine, while toners restore a pH balance to the skin, and can be used after the skin is cleansed as part of your treatment step.