Show HN: Your precise age updated live (justanumber.co)

Indeed. And the timezone or location. And maybe break it out into seconds as well.

looks like its not so precise

You need two locations; place of birth and current location.

I thought about that, but in the end decided to go for simplicity.

Have tried similar, and included a widget on my phone's home screen. Moved too slowly to be motivating/demotivating, though could be interesting longer-term.

It seems to operate off of a unix timestamp and doesn't mind future values, so throw the unix timestamp of your expected death-date in there and watch it count down :)

This is me: http://justanumber.co/?ts=2936995200

(using death-clock.org to get the end-date)

Going off that. It would be pretty cool if there was an app that showed your average death-date but also connected to multiple platforms to show extensions in your death date. Hey you got your resting heart rate down X, ran Y miles last month and had cholesterol drop Z, you extended your life an estimated ~1.5 years!

Yep, that was the motivation =). Although i did write my own function to calculate the number of years, so that i would take into account leap years. Surprisingly, not many solutions exist for that...