In-App Purchases now available for free iPhone apps
developer.apple.com
developer.apple.com
In App Purchase is being rapidly adopted by developers in their paid apps. Now you can use In App Purchase in your free apps to sell content, subscriptions, and digital services.
You can also simplify your development by creating a single version of your app that uses In App Purchase to unlock additional functionality, eliminating the need to create Lite versions of your app. Using In App Purchase in your app can also help combat some of the problems of software piracy by allowing you to verify In App Purchases.
Visit the App Store Resource Center for more details about how you can add In App Purchases to your free apps.
With the race-to-the-bottom economy of the App Store, though, I have to wonder if Free will be the new $.99 and every app will have a screen that says, "Oh, you want wheels with this car?"
Edit: This also makes the Top Sellers list much less relevant. Maybe that will increase what people can actually charge for their apps? I hope so.
I also think that apps that pull the trick you're referencing will probably get hit hard in the reviews section -- people get annoyed at that, and it tends to spark negative comments.
Perhaps I could integrate in-app purchases and disable the annoying ads per user once they purchase anything. That could get users invested in the possible stream of purchases, would remove complaints about ads, and could be lucrative.
Anyhow, I think you'll find that pathological users (i.e. ones who complain about ads) will not be improved by being told they have to pay money to play. They hate that notion, too, almost more than they hate your ads. If you switch to a free trial model, they'll hate that, too. They're unwilling to pay any price for your application.
This is one reason why I don't write software for these people.
Adding free apps opens up a lot of new uses for in-app purchases, and should drive more usage.
OTH we need to see whether (as mrshoe said) whether "Free" becomes the new $0.99 and if this has adverse consequences (for developers in terms of sales and for users in terms of app quality). If the app is free, it will be easier for people to write fake reviews critical of the app. I don't see any risk of "bait and switch" apps because no one is going to take the upsell if they are unhappy with the app.
Currently, if I buy an app it's available for use on both my iPod and my wife's iPhone. With in-app purchasing, will purchases be reflected across both devices? If I upgrade from demo to full on one device, do I need to pay again on the other device?
I thought Jobs said that free apps would "stay free" and would only be relevant for paid apps.