An iPhone developer today said trying to get information from Apple about its new subscription model is like "hitting a brick wall," and remains unsure whether his app will have to toe the new line.

Yesterday, Chris Leydon, who develops TinyGrab, a screenshot- and photo-sharing service, announced that he was stopping work on an update to the iOS app that already exists in the App Store because of Apple's new subscription rules.

Today, he backed away from that position, instead pinning hope on an unconfirmed email attributed to Apple CEO Steve Jobs, who allegedly said that the new subscription rules applied only to apps that delivered content, not "software-as-a-service," or SaaS apps.

"I know, it's a bit dodgy," Leydon said in an interview Tuesday, referring to the purported message from Jobs. MacRumors first reported on the Jobs message.

According to Leydon's Sunday blog, TinyGrab on iOS would run afoul of Apple's new restrictions that require developers to add in-app subscription payment because it currently sells premium subscriptions that unlock features and provide users more storage for their images.

TinyGrab on the iPhone does that now with an outside-the-app payment system that relies on PayPal. The app itself is free, but charges for an annual premium subscription.

"Users have to have an account, and TinyGrab won't run without one," said Leydon today. "But an in-app subscription doesn't pass along [customer information such as] an email address. We need this information to tie a subscription to a TinyGrab account. We need to know which user has subscribed to TinyGrab in order to deliver their purchase to them, something that is not seemingly possible with the current system."

Leydon's asked Apple for more information, but has only received replies that reference sections of the iOS developers agreement, which spells out what is not allowed.

"It's like hitting a brick wall," Leydon said of his attempts to get Apple to clarify the rules, and whether they apply to TinyGrab. "It's an incredibly gray area. And that's infuriating."

Apple did not immediately reply to questions about whether SaaS apps had to follow the subscription rules, and specifically whether those rules applied to TinyGrab.

For the moment, Leydon is willing to take the email credited to Jobs as Apple's official position, and will continue to work on the next iOS version of TinyGrab in the hope that it will be approved for the App Store, even though it won't include an in-app subscription option.

"Maybe we can carry on," said Leydon. "Hopefully, we'll be able to quote [Jobs' email]."