I think you can get around the red tape if the app doesn't make medical recommendations. As long as it just tracks the data, I don't believe it would need to be registered as a type-2 medical device.
An individual's data can help adjust their medications, change eating patterns and maximize sleep schedules.
That sounds like it's being used to guide treatment.
It would be worthwhile to speak to someone familiar with Canadian medical regulations.
It really would be best to speak to someone familiar with Canadian medical device data. Much cheaper to do things right from the start (e.g., develop under IEC 62304) than to fix things later after getting a nasty gram from the Canadian FDA equivalent. Maybe through very careful marketing you can work around potential problems, or maybe not. I think that this project is in an area that requires an expert opinion, however.