Yeast starter calculator for iphone

[jtbrewcrafter]

Anyone know of a good free yeast starter calculator that I can access from my iphone? Mr Malty's now links to itunes store to purchase one in app form when I get to it through my phone. I may just bite the bullet and buy it, but wanted to check if anyone knew of any others first.

Thanks.

 

[mbbransc]

<sub'd>

New iPhone arrived today so I'm interested.