Pretty slick app if you’re a diabetic and using a mac – check out the Diabetes Log Book. It’s free (donationware) and definitely a worthy little tool if you need such software. It’s a great improvement over the messy open office spreadsheet I’ve been using for the last several years.
This is a universal binary if you’re on an intel mac. It’s also fairly early in its development but in my couple of days of use I’ve seen no real issues. It’s also from the UK but includes preference settings so you can switch it to US measurements.