Flow by Plume Labs - The smart air quality tracker to help you find clean air
Daylio - Daylio enables you to keep a private diary without having to type a single line.
AirVisual - Air quality information you can trust
Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
AWAIR - A smart air quality monitor
Journey - A diary that keeps your private memories forever.