Can I use my Apple Watch to run Life Log?

Yes and No. Life Log needs to be downloaded to your iPhone where you get all the functionality of the app. However, you can get a notification to rate your goal achievement at a set time each day on your

Can I compare goals against each other?

Yes you can. Tap on ’Analysis’ and then on ‘Compare’. You can select any two goals to graph against each other.and select from six different bases to graph the data.