Web Astrophysical Calculator - I don't know how I missed this for 16 years...
I'd so totally pay $0.99 cents for this if someone wants to make it into an App
How to Optimize Your Caffeine Intake - PSU provides a genuine service to society - and it is an App!
- Log in to post comments
wolfram alpha?
Save the page to Offline Reader (free). All its Javascript is in the html so there are no outside links to worry about.
Then again, Wolfram Alpha. or the remarkable SpaceTime calculator (while you can still get it, its replacement MathStudio is $20).