At the moment, the klarify app is available in the US, Germany, Denmark, and the UK. To download and use the klarify app, you need to be logged into the respective country’s App Store or Google Play. You can access the klarify app outside these countries, but you can only see the pollen, weather and air quality forecast for the countries, where the app is available. Also, the allergy log only works in these countries. This is because it matches your log with the actual pollen count of your exact location.