Apple is threatening to pull a Siri-like app called Evi from the App Store, according to the app's developer, True Knowledge. The latter company says that on Friday, Apple representative Richard Chipman called and explained that Apple was "going to pull Evi from the App Store," based on the title's parallels with Siri. As of this writing, though, Evi is still on sale for about 99 cents, and has managed over 200,000 downloads.