Last week, Apple announced that in-app purchases will be available for free apps as well. This could probably free developers from creating “lite” and “pro” versions of the app and allow developers to “unlock” features inside the app and create business models that the AppStore haven’t seen. This model could be a great boon for developers like us to upsell our apps (provided they are of good...

Sending an email from your iPhone application is something which you normally want to do it asynchronously. But unfortunately, prior to iPhone 3.0, the only way to send email was using mailto:// url format. i.e, [[UIApplication sharedApplication] openURL: @"mailto:john.appleseed@apple.com"]; The technique was clumsy for one reason. It quits your app and launches mail. To our rescue, comes in-app email. In-App...