There are now 3 native iPhone programs in the iPhone App Store that display Zmanim. Pocket Luach from Tebeka Software, Zmanim from Avi Shevin and the iPhone Siddur from Rusty Brick. It is interesting to note that 2 out of the 3 use an open source Zmanim library. Zmanim uses Ken Bloom’s zmanim code (the optional ZmanimCalculator module in our Zmanim API uses a Java port of this code), and the iPhone Siddur uses a port of our own KosherJava Zmanim API (as mentioned in an email from the developer). With all of these available (and I am sure there are more to come), I am abandoning the iZmanim project to build a zmanim UI for the iPhone, since there is little need for it. My effort will concentrate on enhancing the API itself. I hope to be able to release the Rusty Brick Objective-C port of the API in the near future.