Manderley wrote: Maybe my control freak personality but the fact that I can't enter my weight in the tracker (it keeps asking me if I wrote it right and don't count it doesn't help....
I do understand why most trackers for weight change forums won't tolerate lower BMI numbers - it's probably because of the number of pro-Ana sites that encourage girls towards anorexia or other Eating Disorders as a lifestyle.
The Tracker doesn't allow you to enter a number that calculates your BMI as < 18.55, as far as I can tell. It's not optimal, but I enter the nearest weight it will tolerate (I think that's 7stone 12 for me) and make a note in the notes section of the data of what the actual weigh-in was (e.g., 105lbs). However, it means that the tracker isn't correct, so I'd probably be as well off finally identifying a trend weight analysis app. that works on one of my devices and using that rather than the tracker here.