Calmer Night and Calmer reduce the same range of noise frequencies (2kHz-8kHz), but Calmer Night is designed to further attenuate these frequencies in order to provide a more noticeable reduction in volume. This is so that they can really smooth over harsh frequencies and allow the user to relax into their surroundings.
Like Calmer, Calmer Night is still not designed to "block out" sound like a traditional earplug, so you are still able to hear your surroundings. Because of this, we have learned that many people who are particularly sensitive to sound enjoy using Calmer Night throughout their day-to-day lives.
If you are unsure whether to choose Calmer or Calmer Night, feel free to get in touch as we are always happy to help point you in the right direction.