Ask HN: HTML5 offline access or Google Gears?

The question is ... is html5 offline access the same as google gears? i haven't compared the two but html5 offline access is based on google gears?

The scenario is this. I want to support offline access in my web app and I'm wondering whether I should built it using Google Gears.

My thoughts are - since Gears is being phased out in favour of HTML5, it might be a bad idea if I have to migrate the code later to HTML5 - may not be a problem if HTML5 is based on Gears. - Gears need to specifically get the user to install a plugin, HTML5 does not - Only some browsers support HTML5 offline access but Gears can run on 'all'