Viz must use Apple's sub service and charge monthly fee for formerly free app.
us2.campaign-archive2.com
us2.campaign-archive2.com
They're charging out of store for subscriptions. Apple said no, so they're charging in the store.
The end.
*Edit: Thanks to rome's comment http://news.ycombinator.com/item?id=2286805 and reading Red Foundry's page a bit I understand the app a bit more. It seems to be for testing your (Red Foundry) apps, not downloading other peoples apps. Seems to me that these test apps are intentionally unpublished.
"Building your app is entirely free until you publish it. You do not need to choose your pricing plan until you get ready to publish your app."
And that seems only to apply if you publish through them.
There service to build an app is not free but the app, which is for testing, was free. It's soon to be a buck a month, Apple's minimum.